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.