Tuesday 15 December 2015

200-101 Sample Question: 15

Question: 15

What command visualizes the general NetFlow data on the command line?

A. show ip flow export
B. show ip flow top-talkers
C. show ip cache flow
D. show mls sampling
E. show mls netflow ip

Answer: C

Thursday 10 December 2015

200-101 Sample Question: 14

Question: 14

What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two.)

A. hello packets
B. SAP messages sent by other routers
C. LSAs from other routers
D. beacons received on point-to-point links
E. routing tables received from other link-state routers
F. TTL packets from designated routers

Answer: A,C

Explanation:

Link State Routing Protocols
http://www.ciscopress.com/articles/article.asp?p=24090&seqNum=4
Link state protocols, sometimes called shortest path first or distributed database protocols,
are built around a well-known algorithm from graph theory, E. W. Dijkstra'a shortest path algorithm. Examples of link state routing protocols are:
Open Shortest Path First (OSPF) for IP The ISO's Intermediate System to Intermediate System (IS-IS) for CLNS and IP DEC's DNA Phase V Novell's NetWare Link Services Protocol (NLSP) Although link state protocols are rightly considered more complex than distance vector protocols, the basic functionality is not complex at all:

1. Each router establishes a relationship—an adjacency—with each of its neighbors.
2. Each router sends link state advertisements (LSAs), some
3. Each router stores a copy of all the LSAs it has seen in a database. If all works well, the databases in all routers should be identical.
4. The completed topological database, also called the link state database, describes a graph of the internetwork. Using the Dijkstra algorithm, each router calculates the shortest path to each network and enters this information into the route table.

OSPF Tutorial
http://www.9tut.com/ospf-routing-protocol-tutorial

Thursday 5 November 2015

200-101 Sample Question : 13

QUESTION 13:

Refer to the exhibit.

Which two statements are true about the loopback address that is configured on
RouterB? (Choose two.)

A. It ensures that data will be forwarded by RouterB.
B. It provides stability for the OSPF process on RouterB.
C. It specifies that the router ID for RouterB should be 10.0.0.1.
D. It decreases the metric for routes that are advertised from RouterB.
E. It indicates that RouterB should be elected the DR for the LAN.

Answer: B, C


Tuesday 22 September 2015

Struggles in China Push Cisco to Strike Deal

U.S. technology giant to unveil partnership with Chinese server maker

BEIJING US technology giant Cisco Systems Inc. has helped build the Internet in China, working closely with the Chinese government that a spiritual group, once accused him of helping the country warning of its own nationals, a charge denied by Cisco.

Now Cisco, in a development that underlines the difficulties foreign technology companies in China, is preparing to support its business in trouble us joining forces with a Chinese upstart computer company.

The giant network of Silicon Valley-team is expected to announce a partnership with the server manufacturer Inspur Group Co. during the visit of Chinese President Xi Jinping, in Seattle on Wednesday, according to people familiar with the talks. The effort to Cisco to open more doors for its technology in China shows how Western technology companies are struggling to adapt to an increasingly difficult market.

"There are some geopolitical dynamics that we need to explore," said Chuck Robbins, who became chief executive of Cisco, in July, in an interview last week that Inspur not discussed. "It 'been a few difficult years."

On Wednesday, Mr. Xi is scheduled to meet with the leading figures in the technology industry, including Apple Inc. 's Tim Cook and Microsoft Corp.' s Satya Nadella. The presence of many leading technology underlines the importance of the Chinese market is US companies.

Companies such as International Business Machines Corp., Microsoft and Symantec Corp., once a leader in the Chinese market, are running against their local rivals, with a government committed to helping Beijing.

Over the past two years, the business cold deepened after allegations of former NSA contractor Edward Snowden US American products of high-tech enterprises "have been used by the US government to spy on China. China's leaders have said government departments and enterprises State to buy more team, while developing higher standards for equipment manufacturers foreign and accelerate investment in domestic technology.

Technology companies are responding to Western alliances with headwind China rivals.The China were particularly strong for Cisco, a company founded in 1984 that popularized routing devices that direct traffic on the Internet. The company, routers No. 1 selling around the world, systems and other key network switching tubes, served as a key supplier when China built its first Internet backbone.

But Cisco has suffered from security problems and local competitors after Snowden, such as the market share of Huawei Technologies Co. Cisco routers sold in China amounted to only 10.8% in the second quarter of 2015, while Huawei It It accounted for 67% market research firm IHS estimates. Cisco accounted for more than half of the sales of the router is about ten years ago, estimates of Bernstein Research.

Cisco does not provide sales data for specific countries. Dell'Oro Group, a market research firm, estimates that revenues for Cisco in China reached a peak of $ 2040000000 in fiscal 2012, and has fallen nearly 30% since then.

Things got a bit 'better lately, said CEO of Cisco, Mr. Robbins. Equipment orders in China, compared with 20% in the third fiscal quarter of Cisco, has been reduced to only 3% during the latest quarter ending in July, the best performance in eight quarters.

Thursday 3 September 2015

VMware was Surprised to Find out that its Biggest Rival, Cisco, Owned 5% of its Company

Cisco and VMware technology two great rivals, clashed class this week.

In one corner, VMware had its largest customer conference, VMworld, where more than 23,000 people flocked to San Francisco. One thing we hear: how VMware plans to overthrow the king Cisco network industry.In the other corner, Cisco had its largest expo Global Sales Experience in Las Vegas, where the sales force of 20,000 strong is pumped to exit and sell (and beat VMware).

In pre-show interview with Business Insider, the VMware CEO Pat Gelsinger said that among several new businesses VMware billion dollars of potential up-and-coming, who is more excited about the product NSX, which competes with Cisco. "This is an industry that operates under essentially the same architecture for 25 years," said Gelsinger. NSX described as "radical".

NSX wine $ acquiring a company called Nicira US1.25 billion a year in which VMware exceeded Cisco to launch VMware ago, and in the process destroyed the relationship with your partner once near Cisco, EMC. (EMC is the parent company of VMware.) Cisco, John Chambers, was trash talking VMware and Nicira treatment since then.

This week, Gelsinger said in essence that the network cameras worldwide resentment EMC CEO Joe Tucci, because the acquisition. "The relationship between Joe [Tucci, CEO of EMC] and John, this was a very exciting one another. Personally, I am anxious and looking for a more collaborative relationship with Chuck [Robbins, new CEO of Cisco] because this was a deeply personal issue between John and Joe emerged ".

And there's a good reason why Gelsinger want to make friends with Robbins. While the two companies clash in the market, Cisco has quietly been buying a large stake in VMware.A biggest game he knew of VMware.

A month later, VMware has released its annual proxy statement earlier this year, VMware has had to upgrade because they "realized" that Cisco now has more than 5% of VMware, 6.5 million shares, VMware said.This participation does not give sufficient voting Cisco to say, overthrow the board of VMware and VMware does kill the product NSX. But an activist investor is trying to get a fix to sell EMC VMware. And if that wins investors, Cisco is sitting pretty.

Monday 24 August 2015

200-101 Sample Question : 12

QUESTION 12:
Refer to the exhibit
Which switch provides the spanning-tree designated port role for the network segment that services the printers?

A. Switch1
B. Switch2
C. Switch3
D. Switch4

Answer: C





Wednesday 12 August 2015

Chuck Robbins to Report His First Quarter as Cisco’s CEO

When Cisco reports its fourth-quarter earnings today after the markets close, it will be the first time that the company makes with the CEO Chuck Robbins fully in charge.


 Analysts polled by Thomson Reuters expect Cisco to report earnings of 56 cents a share, on revenue of $ 12700000000. And while meeting the expectations of the quarterly Via will be seen as a key reference point for the beginning of the mandate of Robbins there will be plenty more to see the report and the conference call to follow not only the figures.

Cisco is already some measures of a different company than when Robbins was elected in May to replace John Chambers. First, the entire leadership team has changed.Moreover, he added and subtracted from its business lines. In June, Cisco has invested $ 635 million to acquire the company OpenDNS cloud security.

In July, the company sells its television business set-top boxes of Technicolor in France, in a blow to conduct one of the largest deals of Chambers of the time, the $ 7000000000 acquisition of Scientific Atlanta, completed in 2005. It has also recently made another agreement on Invicta, a business unit of storage composed Whiptail heritage, boot storage flash memory Cisco acquired in 2013 for $ 415 million.

Robbins said it is contemplating the most significant changes in Cisco, using phrases such as "operational rigor" in public discussions about their plans, a suggestion that most of the business units and jobs could be on the table cut. Today is the first time you face probing questions from analysts on how these plans are taking shape. It seems that the changes so far have been small and larger are on the way.

There is still much work to do. Cisco continues to struggle with silos that harm their business efficiency and confuse customers. And there is still a significant investment in software that, in time, basically remake the networking industry at the top of which is currently located. These are just two ideas, and here are a few more. The Robbins was beginning.

Tuesday 2 June 2015

200-101 Sample Question : 11

QUESTION 11:

Refer to the exhibit.


Why has this switch not been elected the root bridge for VLAN1?

A. It has more than one interface that is connected to the root network segment.
B. It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C. It has a higher MAC address than the elected root bridge.
D. It has a higher bridge ID than the elected root bridge.

Answer: D

Thursday 28 May 2015

8 Challenges For Cisco's Next CEO Chuck Robbins


It's not an easy road:

One of the most difficult challenges for a new CEO can fill executive vacancies. Cisco incoming CEO Chuck Robbins Wednesday met this challenge by naming 20 years Cisco veteran Chris Dedicoat to succeed him as head of worldwide sales.

When Robbins steps in his new position on July 26 to replace longtime leader John Chambers, who is expected to drive growth for the networking giant based in San Jose California ,.
The partners told CRN a difficult task waiting for Robbins gives to the challenges of a rapidly changing environment, such as security, networking and computing center stage InterCloud offer cloud software defined by Cisco. Here's a look at some of the challenges marketers to see Robbins, as he prepares to enter his new role.

1. Safety, safety, safety:

The No. 1 challenge Robbins Cisco is making a more recognizable brand in the security sector, according to the partners. Although Cisco has recently introduced a number of new offerings, partners are crying for greater investment in security.

2. Rinse Cloud:


"[InterCloud] still a bit" confused ", said the CEO of a solution provider on the East Coast, who asked not to be identified.Although Cisco executives are being turbulent in signatory InterCloud partners as providers, solution providers are still trying to analyze the proposal exact value for channel partners.

3. Too late to revive the EMC relationship:



With cameras leaving office, the partners are now worried about the already tense relationship between Cisco and EMC.Cisco in October most of its stake was sold EMC and VCE now owns approximately 10 percent of the joint venture. EMC also announced this month, a new line of systems infrastructure hyper-VCE converged server using white box instead of Cisco Unified Computing System, which is used in VCE Vblock systems and VxBlock.

4. Streamline Development, Break Down Silos:



The partners say they did not flee the Cisco product lines can be overlapping and confusion for customers at times. It can be difficult to keep up with the constant stream of acquisitions and implementations, upgrades and new product lines of the company, according to the partners.
Robbins mentioned partners should focus on two areas: a more integrated "holistic" supply security and network strategy more clearly defined by the software.

5. A new model of selling compensation:

 
As Cisco continues to press its partners to build cloud and managed services business, solution providers want to see an effort by Cisco, too. Although Robbins said the company will increase the fee for vendors who sell direct services to members, several manufacturers have said they want to know exactly what Cisco is setting the compensation and how long it will take place.

6. Keep acquisitions from:



Software and the acquisition of Cisco security strategy favorably played many partners, citing the successful integration of companies such as Cisco and Sourcefire Metacloud as examples. Cisco has been on a tear recently with the acquisition of software, which accounts for 9 their last 10 acquisitions.

7. Implementation of the entire portfolio:



Cameras Robbins has referred to as "machine running".
Partners said Robbins has proven its ability to perform in sales and in the canal side of the business, but it is unclear how successful it may be across the board as leader, solution providers said.
"Their biggest challenge is the realization of all they have in their entire portfolio," said Chris Bottger, senior vice president of collaboration services IVCi, a solution provider based in New York Hauppauge, and Cisco partners, the ranked No. 201 in the 2014 CRN SP500.

8. Maintaining the momentum:


After an enthusiastic partner of Cisco Summit in Montreal last month that brought many new services and offers for the channel, it is important that Robbins maintains momentum with Cisco.Cisco reported strong earnings for the second fiscal quarter in February, recording percent year over year sales growth of 7 and positive results for the third quarter this month with gains of up to 12 percent and earnings more than 5 percent over the previous year.The partners also believe Cisco is ahead of the competition in the emerging market and potentially lucrative Internet-of-things.

Wednesday 20 May 2015

200-101 Sample Question : 10

QUESTION 10:

At which layer of the OSI model is RSTP used to prevent loops?

A. physical
B. data link
C. network
D. transport

Answer: B

Tuesday 19 May 2015

MiSEC Achieves Cisco Premier Certification in South Africa

Johannesburg, PTY Ltd Advisory Music announced today that it has achieved certification from Cisco Prime. For a Premier certification, MiSEC had to meet standards of networking competency, service, support, and statement by Cisco customer satisfaction.


Edwin M. Musa, director of technical services, MiSEC adviser said. "This certification demonstrates our commitment and expertise and confidence in Cisco technologies as a basis for any computer network will continue to focus on growing our experience Cisco is the first brand of most of our solutions and implementations.

Our risk-sensitive approach to providing solutions and support will ensure that the customer's premises are always provided in the law or standards. The road we started in Internet of Things sand is a prelude to solutions that allow security companies to customers the opportunity to take advantage of the company from anywhere an Internet connection exists. "

As a Cisco Premier Certified Partner, music demonstrates a range of expertise. To achieve Cisco Premier Certification MiSEC is necessary to achieve the Cisco Express Foundation Specialization. This specialization includes tests with expertise in core routing and switching integration, wireless LANs and security technologies. In addition, MiSEC was necessary to incorporate a basic level of Cisco Lifecycle Services into their offerings and demonstrate measurably high levels of customer satisfaction based on customer satisfaction surveys independently verified.

Cisco Resale Channel Program provides partners with the training required to build sales, technical and Cisco Lifecycle skills services. Cisco resale partner certifications-Gold, Silver, Premier and Select - represent an increasing breadth of skills in key technologies and a partner's ability to deliver integrated networking solutions. Cisco resale partner specializations - Master, Advanced and Express - reflect an increasing depth of sales, technical and service expertise in particular technologies.


About MiSEC :

MiSEC is an IT service provider and specialized solutions based computing security and technical solutions. MiSEC currently operates in several countries in Africa south of the Sahara namely Africa. South Africa, Zimbabwe, Kenya, Tanzania, the Democratic Republic of Congo and Zambia.
Although the product agnostic, music services and solutions support world-class technology and provider associations. The founders of music are over 35 years of combined experience in IT across the south, east and west Africa.

Sunday 17 May 2015

200-101 Sample Question : 9

QUESTION 9:

Which three statements about RSTP are true? (Choose three.)

A. RSTP significantly reduces topology reconverging time after a link failure.
B. RSTP expands the STP port roles by adding the alternate and backup roles.
C. RSTP port states are blocking, discarding, learning, or forwarding.
D. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
E. RSTP also uses the STP proposal-agreement sequence.
F. RSTP uses the same timer-based process as STP on point-to-point links.

Answer: A, B, D

Thursday 14 May 2015

FireEye Falls After Cisco Slaps Down Buyout Rumors


Wednesday was not the first time rumors circulated that the security company FireEye was the target of a takeover bid by giant Cisco Systems network. And probably not the last.But this time the rumor had enough traction not only in Goose FireEye share of about 5 percent, exceeding $ 43.68, but also cause a rare public response by Cisco CEO John Chambers, as he spoke in a conference call.

While admitting he was "breaking my own rule" against Respond to Market rumors, he did just that. "I would not bet on that you have heard today," he said, clearly referring to shares FireEye.FireEye quickly turned most of trading after hours of the day, the stock fell more than 3 percent and noon.

But there is another reason why an agreement with Cisco or other person is not coming. FireEye is not for sale. According to sources close to the management of the company sources, who are not ready to consider offers to buy before reaching $ 1 billion in annual revenue.Nearly $ 426 million was recorded last year, analysts expected to be approximately $ 630 million this year and about $ 865 million in 2016. If FireEye management sticks to his guns, which means that will push the offers, or at least rumors of bids, at least until 2017.

Yet FireEye would make a tempting target for several potential suitors, including Cisco, Hewlett-Packard and IBM, all of which play in different aspects of the security company. Its current market capitalization is approximately $ 6.6 billion.FireEye specialized in filtering technology in real time protecting corporate networks. Secret ingredient is a virtual machine (software that acts as a physical machine) that is installed on the customer's network to check all incoming traffic for malware.

This virtual machine acts as a kind of mail / sluice room where each package is opened before it is delivered to the recipient. If an email arrives with an attachment containing a virus, which opened its doors and has published, where he can not hurt anything. If it contains malware, the incident was reported to the FireEye cloud command center, which oversees about $ 50 billion of such incidents every day. If it is safe, it is forwarded to the recipient.

FireEye emerged as a power back-and-forth in computer security early last year, when weeks after its IPO in 2013 spent $ 1 billion acquiring Mandiant, specializing in incident response - help investigate and clean disaster after a major security breach. His most famous case was the attack by North Korean hackers against Sony Pictures Entertainment.


Sunday 10 May 2015

200-101 Sample Question : 8

QUESTION 8:

Which two states are the port states when RSTP has converged? (Choose two.)

A. discarding
B. listening
C. learning
D. forwarding
E. disabled

Answer: A, D

Thursday 7 May 2015

Cisco Snags Tropo Communications Development Platform


When you think of Cisco, it is easy to classify as a network equipment company Cisco, but also has a communication and collaboration side, including WebEx. Today announced its intention to purchase Trope, a Twilio communications platform like to add telephony, messaging and other communication tools for any application.

As I wrote yesterday, APIs make it easier for developers to add functionality to a range of applications quickly and include developers based love is an ability to communicate. At TechCrunch Disrupt Hackathon last weekend, most applications include the ability to trigger a text message when something important happened in the application.

Twilio is probably the best known of the communication API, but buying Tropo Cisco provides immediate access to a community of over 200,000 developers (according to figures provided by Cisco). Tropo offers its product for free to developers and made money each communication via Tropo platform. It is unclear whether Cisco will continue to use the same pricing model.


Tropos team will join Cisco Collaboration and Communication. The tricky part here is not only integrates a team that has been independent in a large organization, without sucking the spirit of it, it also has to integrate a loyal community and try to keep it without alienating. This is the major challenge for companies when buying such development tools.

Is the same kind of challenge facing IBM after buying the AlchemyAPI earlier this year. He was also an instrument with a large community of faithful who buy major supplier of traditional IT.In a blog entry Tropo friendly staff, Cisco said he certainly believes you can do it all. "Together we will help extend the Cisco platform for terminals and third-party applications via modern API and enable Cisco to better serve the developer community." Ultimately, however, this is more than a statement of objective fact.

This purchase gives a Cisco platform to attract developers to the broader ecosystem, which is important for a mature company like Cisco, trying to avoid the brutality of the interruption.
Terms of the deal were not disclosed.




Wednesday 6 May 2015

200-101 Sample Question : 7

QUESTION 7:

Which two of these statements regarding RSTP are correct? (Choose two.)

A. RSTP cannot operate with PVST+.
B. RSTP defines new port roles.
C. RSTP defines no new port states.
D. RSTP is a proprietary implementation of IEEE 802.1D STP.
E. RSTP is compatible with the original IEEE 802.1D STP.

Answer: B, E

Friday 24 April 2015

CBT Nuggets Releases Cisco CCNA ICND2 200-101 Training Series

New video training series with Jeremy Cioara covers objectives for Cisco's newly revised exam:

CBT Nuggets announces a new series of training, "Cisco CCNA 200-101 ICND2."

Earlier this year, Cisco has examined the two exams on the CCNA certification. Both the ICND1 (Exam 100-101) and ICND2 (200-101) test now cover more topics. In this new series of training, trainer Jeremy Cioara covers all the new exam objectives ICND2, including VPN, EIGRP, HSRP, GLBP, OSPF, and of course, the IPv6.

Cioara, one of the world's most popular trainers Cisco has also completed a series on the new exam ICND1 for CBT Nuggets. With these two sets of CCNA Video available now, CCNA candidates can find all the training they need in one place.

About CBT Nuggets: CBT Nuggets is a technology-based company specializing in cutting-edge computer training online project management and productivity in the office. Founded in 1999, the CBT Nuggets provides learning fast, easy and convenient to instructors conferred on individuals, small groups and large organizations.

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Thursday 16 April 2015

200-101 Sample Question : 6

QUESTION 6:

Which port state is introduced by Rapid-PVST?

A. learning
B. listening
C. discarding
D. forwarding

Answer: C

Tuesday 7 April 2015

Cisco, Amex & Treeline Invest $ 25 Million In Mobikwik


Networking giant Cisco has invested in the mobile wallet MobiKwik as it looks to expand in the field of Internet of Things (IoT), where payments can be made by machines without human intervention.

MobiKwik has raised close to $ 25 million in a Series B round led by Tree Line Asia. Other investors include Cisco Investments, American Express and existing investor, Sequoia Capital. The funds will be used for investment analysis technologydata, brand building and growing t the network of users and dealers, the company said.

MobiKwik investment Cisco is a part of our attention to the mobility connected, said Alok Bardiya, national director, Cisco Corporate Development. "This investment demonstrates our focus on India and the faith we have in it becoming a hotbed for innovation."

Bipin Preet Singh, founder and CEO, MobiKwik he said: "We have a goal of 100% on creating a portfolio neutral, interoperable and widely accepted Taking million Indians from cash to digital transactions and building a user profile rich meet all of their financial services. 'needs, is our ultimate mission to MobiKwik. "

Investment American Express' in MobiKwik payments helps the company to play an active role in promoting the growth momentum of mobile payments in India. According to Sanjay Rishi, president of American Express South Asia, "MobiKwik was impressive with its focus on a product based on the mobile that customers love to use. American Express is a staunch supporter of the untapped potential of the phone to make financial transactions and easy still safe. "

Cisco has been actively looking for investment targets in India. The company has invested in MobStac headquartered in Bangalore, as part of its comprehensive plan for mobility-related, and in Covacsis, which has applications for Smart manufacturing.Apart to gain access to the technology of Cisco networking, MobiKwik gain access to expertise American Express' in payment processing.

Thursday 2 April 2015

200-101 Sample Question : 5

QUESTION 5:


Each of these four switches has been configured with a hostname, as well as being
configured to run RSTP. No other configuration changes have been made. Which
three of these show the correct RSTP port roles for the indicated switches and
interfaces? (Choose three.)

A. SwitchA, Fa0/2, designated
B. SwitchA, Fa0/1, root
C. SwitchB, Gi0/2, root
D. SwitchB, Gi0/1, designated
E. SwitchC, Fa0/2, root
F. SwitchD, Gi0/2, root

Answer: A, B, F

Monday 16 March 2015

Cisco Introduces Free Version Of ConfD Software


Cisco has released a free version of its CONFD management software, CONFD base in an attempt to help the development of physical and virtual devices programmable network. Cisco acquired CONFD, with the network system, a product of orchestrating network control last year as part of its acquisition of the Swedish developer of Tail-f software.

According to Cisco, which describes the future of CONFD demonstrates the commitment of the company to the advancement of open standards in the best interests of the free basic networking software industry CONFD will be available for production use, without charge additional for NETCONF, the protocol is based on YANG governs how network devices can be managed and configured.

The premium version of CONFD with a complete set of interfaces to the north-bound - including the interface to the command line, transfer state representative and Simple Network Management Protocol will continue to be commercially available, Cisco says.

CONFD significantly reduces the time and resources necessary to develop interfaces for network management, said Fredrik Lundberg, cloud and virtualization group director of Cisco's strategy, in a statement. Network providers operate based CONFD quickly develop products that are fully NETCONF and YANG compliant.

With the implementation of this programmable network architecture, Cisco provides that service providers will cut costs to configure and manage up to 50% over a period of five years, while being able to add new services . Some network equipment vendors are already using 75 CONFD, Cisco said.

Sunday 1 March 2015

200-101 Sample Question : 4

QUESTION 4:

Refer to the exhibit.



Given the output shown from this Cisco Catalyst 2950, what is the reason that
interface FastEthernet 0/10 is not the root port for VLAN 2?

A. This switch has more than one interface connected to the root network segment in VLAN 2.
B. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.
C. This switch interface has a higher path cost to the root bridge than another in the topology.
D. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.

Answer: C

Tuesday 24 February 2015

Cisco IPv6 Processing Bug Can Cause DoS Attacks


Cisco announced that NCS 6000 and Carrier Routing System (CRS-X) heavy pieces of iron used in the market for service providers have a software error that needs a bug ways IPv6 impact patching.The Cisco IOS XR unit analyzing IPv6 packets and attacks that exploit the problem may cause a forced reboot of the line card processing traffic.

An attacker could exploit the vulnerability by sending an IPv6 packet is invalid, thereby extension headers, through a device line card Cisco IOS XR concerned, were consulting company. This vulnerability can be exploited repeatedly to cause a denial expanded condition.

Of course, this is only a problem if you're actually using IPv6 traffic processing vulnerable IOS XR software. It also limited the traffic that is moving the affected device: the traffic on the device on the way to somewhere else error will not trigger.

For the Cisco NCS 6000, all versions of IOS XR software except 5.3.2 are affected. For IOS XR CRS-X, all versions supporting line cards CRS-X, including 400 Gbps modular services card (MSC) and 400 Gbps and forwarding processor boards, the secure version is 5.3.0 - all other vulnerable.The versions are bug was appointed CVE-2015-0618.

Monday 23 February 2015

200-101 Sample Question : 3

QUESTION 3:

Refer to the exhibit.


At the end of an RSTP election process, which access layer switch port will
assume the discarding role?

A.
Switch3, port fa0/1
B. Switch3, port fa0/12
C. Switch4, port fa0/11
D. Switch4, port fa0/2
E. Switch3, port Gi0/1
F. Switch3, port Gi0/2

Answer: C

Sunday 22 February 2015

Cheeky Arista Takes On Cisco; Is It Different This Time?


There was a time in the market of computer networks was a lively, with many players, many of which dwarfed the challenger, Cisco Systems, which went public at the dawn of the Internet for consumers, in the month of February 1990 . Cisco (ticker: CSCO) is today a giant $ 150 billion, with most of the market itself, and, as CEO, John Chambers, is keen to point out, its competitors have long since either leave your market or bent by completely.

Cisco is a survivor, but the big companies want to always alternatives. A challenger emerged in the public capital markets last June, Arista Networks (ANET) .Run by former executives from Cisco, including the CEO Jayshree Ullal legendary Silicon Valley genius Andy Bechtolsheim, its shares have risen by almost 60% from his debut as cleverly exceed the expectations of each of its three quarters reported publicly.

The results of Cisco and Arista Arista suggest the past two weeks is really a mastery of Cisco equipment market increasingly credible threat network vital cog that connects computers and computer networks, switching together. Arista is not cheap. After marginally increase the Friday following better than expected, the action, $ 68.50, trading at 39 times earnings per share for the year of $ 1.77 expected. That compares with just 14 times for Cisco. As a multiple of sales, Arista gets nearly six times the expected revenue this year, double the Cisco. But it might be worth. With Arista turning on revenue growth of 50%, and $ 1 billion in revenue next year, it is becoming an enterprise substantial enough to challenge the dominance of Cisco.

ARISTA has gained a high profile because of a fascinating list of customers. Microsoft (MSFT) has been its largest customer, accounting for 15% of sales last year. Facebook (FB), is also a major customer. And Arista has been known to sell in the shops of high frequency trading, which can use their options to make trades automatically analyzing incoming information.Asked stock analysts last week, when Arista is becoming a viable second vendor Cisco the eyes of customers, Ullal said: Yes, I think, absolutely.

Worth a look what happened the last time a challenger has become a valid number 2 to Cisco. Juniper Networks (JNPR) came public in June 1999, Cisco has promised to give serious competition in the market for another piece of networking, routers.Two years after that bright start, Juniper's revenue was in decline, which was adopted in almost a billion dollars in debt, and had loaded in multiple purchases hundred million dollars, which led to large amounts of good will, which lead to more than a billion dollars of write-downs in the following years.

There are echoes instead of Juniper Ridge that give pause, given how things have got rid of Juniper. Juniper was attended by industry executives network experts, some with Cisco pedigree. Its turnover in 2000, a year after his arrival public, was similar to the Street expected $ 786 million this year Arista. Via Ullal said last week the market is very similar with the service providers, [so] Juniper became the alternative source, [and now] Arista is clearly to be seen as the innovator in alternative data center.

Arista might commit similar mistakes, leverage and operating a series of acquisitions rash, in an attempt to maintain growth in the course? "It 'a strategic issue," said Alex Henderson, who continues Arista and Cisco, Needham, and the first and second Purchase Rate UN United Nations waiting. "But the difference is, Juniper sold in a market of telecommunications business was smaller than the market," says Henderson. Cisco was able to subsidize its sales in the telecommunications market with its sales in the company, and put pressure on Juniper.

Arista, however, "is where the market is going," With the sale of Internet Data Center of Facebook and Microsoft, which is also what all the customers of the company's bread and butter Cisco wants to build. Everyone wants to be a company of Cloud Computing, and is conducting Arista Way. And if this is where the market is going switching, there is no way for this time subsidize Cisco, nuts Henderson.It seems almost unnecessary to point out things were different when the Nasdaq in 2000 stood at levels that now approaching. Juniper was caught in the excesses of the dot-com; I have also been involved in the frenzy of easy money M & A.

Ullal, whose Growing companies switching was acquired by Cisco when it was the size Arista it is today, is aware of not losing concentration. "I do not exclude M & A, but the warning is where their main market is as big as [our] is, you have to focus on what you do best software in our case and you have to stay true to the DNA of your business."

RESULTS YOUR CISCO a week ago seemed to show that the company is doing very well, but there are signs that remains concerned about Arista. Report Q2 Cisco prosecutor showed an increase of 11% in sales of switching equipment. Holders of Wall Street the next day said "Cisco is back!" After a year or more of the concerns that Arista was eating his lunch.

But Cisco has also taken its case to the International Trade Commission, demanding justice for Arista allegedly infringed 12 of its patents networks. Filed a lawsuit in California on Arista has violated the copyright in the syntax of programming "command line" very kind of IT staff to set the functions of the switches.
At the end of 2013, Chambers said Barron to "see what happens", as the company unveiled its next switch, the effort to start-nourished launched by the company, called Together, that would be a "murderess" Arista. The report's findings suggest two weeks ago, Cisco is doing very well with the new equipment. But the decision to launch the trials in December also has a whiff of desperation after the insistence of Chambers that competition to win dry day.

Henderson, who thinks Arista is causing Cisco actually worth, is not impressed with the idea of the owner came back. "They announced a 11% increase in sales of switches, but that is compared to the same quarter last year, which saw a decline of 12%!" Says. It is not what I would call a comeback.If things are different this time, though Arista can be a healthy No. 2, his action is worth a look even at its current price level.


Friday 20 February 2015

200-101 Sample Question : 2

QUESTION 2:

Refer to the exhibit



Which switch provides the spanning-tree designated port role for the network
segment that services the printers?

A. Switch1
B. Switch2
C. Switch3
D. Switch4

Answer: C

Wednesday 18 February 2015

GSF, Cisco Arm Join Hands to Scout For Cloud, IoT Startups



BENGALURU: Multi-city accelerator GSF has partnered with corporate venture arm of equipment maker Cisco networks to accelerate startups that focus on cloud and Internet-of-Things (IoT). IO represents a connected world in which all devices communicate with each other. India is going through a moving wave. We IoT will be the next wave. Along with Cisco investments, we will help companies gain access to global customers, said the founder of GSF Rajesh Sawhney, whose accelerator has funded 33 companies since its inception in 2012.

The accelerator will look at the hardware and software platforms.During the period of 16 weeks from March, the five selected startups will spend a month in Silicon Valley too. GSF said it will provide $ 45,000 (about Rs 28 lakh) in funding for each of those selected for an 8% startups. "The presence of deep Cisco engineering in India with global engineering teams will play a key role in mentoring entrepreneurs in internet-of-things up a d cloud technologies," said Amit Phadnis, president of engineering and site leader Cisco India.

GSF announced it will invest more in portfolio companies with Cisco after the program. Our collaboration with GSF adds a key pillar of our investment activities under the Innovation Fund of India, said Alok Bardiya, director of corporate development Cisco.Last years, Cisco Investments allocated $ 40 million (about Rs 249, 63 million rupees) to invest in early-stage startups Indians focused mainly on three vertical connecting with mobility, big data and internet-of-things.

This is the third new vertical, two years old, GSF in its throttle format. In recent months, has launched vertically oriented space mobile and digital communication.

Thursday 29 January 2015

200-101 Sample Question : 1

QUESTION 1:

Refer to the exhibit.


Why has this switch not been elected the root bridge for VLAN1?

A. It has more than one interface that is connected to the root network segment.
B. It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C. It has a higher MAC address than the elected root bridge.
D. It has a higher bridge ID than the elected root bridge.

Answer: D

Cisco Streamlines Cloud Management Software Purchasing


Cisco has released a new series of cloud company, brand ONE, which automates, performance, and run applications in private and hybrid clouds. UNO strategy seller is a new approach to software licensing and packaging.

The changes are designed to simplify purchasing and receiving cloud management software for Cisco customers.Unlike pre-sale management software cloud Cisco as part of the complex commitments and costly services, focus on the Enterprise Cloud Suite is designed to appeal to a wide range of customers who want to pre-packaged and easy to implement private management software solutions and hybrid cloud, said IDC analyst Mary Johnston Turner via email.

Administration is simplified through the modular automation, ie other automation functions can be added one by one, into small pieces.The suite provides examples of infrastructure, application performance optimized based on coherent policies in computing, networking and storage. Models outside the box application stack based on Linux or Windows and provides tools for developers to design and implement custom stack.
With Cisco ONE software strategy, Cisco offers software packages to hundreds of previously separated into three suites: Data Center, WAN and access. The company has improved portability license.