Question No 9:
Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two.)
A. The transport layer divides a data stream into segments and may add reliability and flow control
information.
B. The data link layer adds physical source and destination addresses and an FCS to the segment.
C. Packets are created when the network layer encapsulates a frame with source and destination host
addresses and protocol-related control information.
D. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
E. The presentation layer translates bits into voltages for transmission across the physical link.
Answer: A,D
Sunday 31 May 2015
Sunday 24 May 2015
200-120 Exam Question No 8
Question No 8:
A receiving host computes the checksum on a frame and determines that the frame is damaged. The frame
is then discarded. At which OSI layer did this happen?
A. session
B. transport
C. network
D. data link
E. physical
Answer: D
A receiving host computes the checksum on a frame and determines that the frame is damaged. The frame
is then discarded. At which OSI layer did this happen?
A. session
B. transport
C. network
D. data link
E. physical
Answer: D
Thursday 21 May 2015
Sen. John McCain: Cisco's behavior in Russia 'deserves further investigation
Sen. John McCain: Cisco's behavior in Russia 'deserves further investigation:
A report published by Cisco rubbed BuzzFeed involving economic
sanctions against Russia for the sale of its technical team, which
caught the attention of Sen. John McCain.McCain (R-AZ) chairs the Senate Armed Services and pushed for more action from the United States against Russia in response to its participation in Ukraine and its annexation of Crimea.
BuzzFeed report, based on documents and view an anonymous source said that Moscow is aware of the operations of Cisco, Cisco accused of changing sales records and book deals with a false name to the client after sanctions began. In one case, Cisco has sold material that wound through the hands of the FSB, the successor to the KGB, but the records do not indicate FSB was the prospective purchaser.
Although Cisco has admitted that some customer names have changed, he said that these errors were innocent and vehemently denied all charges of its sales violated sanctions.
McCain called the situation "worrying" and said he "deserves further investigation," BuzzFeed said in a follow-up article.
Interestingly, the outgoing chief executive of Cisco, John Chambers, also a Republican, McCain knows well. Chambers was a supporter top of the 2008 presidential candidacy of McCain, donating more than 1.3 million.
Wednesday 13 May 2015
Cisco’s latest earnings show the company isn't threatened by competition...yet
Cisco’s latest earnings show the company isn't threatened by competition...yet:
Cisco network Titan recorded an increase in turnover in the third
quarter, but analysts still believe that the company could lose
momentum.
For a long time, Cisco CEO John Chambers, makes no bones about criticism of his company during its last earnings call Wednesday before retiring.Titan networks reported $ 12.1 billion in revenue in the third quarter compared with $ 11.5 billion in the same period last year. Salas said that this gain of 5% should silence opponents who doubt -0.24% CSCO Cisco can remain relevant in the era of cloud computing and other technologies."All that crap about new players coming in and the software to enter and kill the white label our approach was completely wrong," Chambers said.The executive of 65 years, has a point.The emergence of a new type of technology called software defined network has caused industry analysts to question whether the new challengers could threaten the core business of selling Cisco networking equipment. A number of companies are selling new technology, mainly software companies have access to cheaper servers from Hewlett-Packard, Dell and Taiwan-based Quanta instead of buying more expensive pre-loaded hardware from Cisco.However, the hype surrounding the technology has yet to enter a market share of Cisco, which generated $ 3 billion in cash flow during the quarter."We beat all our competitors were concerned," Chambers said triumphantly.Chambers explained that rivals sell "building blocks inexpensive" lack the experience of Cisco in providing customer support for its full range of switches and routers. If one of these machines cost dies, the owner probably have no idea who to call for help, he said.But for a man who claims that Cisco is not threatened by the emerging technology, who spoke much during the call. Often with indifference.And there are subtle signs that activity switching Cisco Legacy feels some pressure from potential competition. When an analyst asked why switching activities of the Chambers of the company grew by only 6% in the quarter, suggesting that Cisco numbers only look good, because last year's figures were so bad, they grew defensive Cameras ."I'll never apologize for growth in the single digits for change," said Chambers challenge.While new technology may be gaining ground, Chambers believes Cisco has everything you need to withstand the challenge. He said 3,000 people took five years to develop high-quality products of the company. But now, the company tries to be as nimble as a startup said. As proof, Chambers said a new router in development, said 225 people required only to build more than 12 months."We can now compete with the best startups in the world and run on them," Chambers said.These are provocative and Chambers seems determined to fight potential rivals. The new CEO Chuck Robbins also be determined and certain that his predecessor remains to be seen.
Cisco network Titan recorded an increase in turnover in the third
quarter, but analysts still believe that the company could lose
momentum.For a long time, Cisco CEO John Chambers, makes no bones about criticism of his company during its last earnings call Wednesday before retiring.Titan networks reported $ 12.1 billion in revenue in the third quarter compared with $ 11.5 billion in the same period last year. Salas said that this gain of 5% should silence opponents who doubt -0.24% CSCO Cisco can remain relevant in the era of cloud computing and other technologies."All that crap about new players coming in and the software to enter and kill the white label our approach was completely wrong," Chambers said.The executive of 65 years, has a point.The emergence of a new type of technology called software defined network has caused industry analysts to question whether the new challengers could threaten the core business of selling Cisco networking equipment. A number of companies are selling new technology, mainly software companies have access to cheaper servers from Hewlett-Packard, Dell and Taiwan-based Quanta instead of buying more expensive pre-loaded hardware from Cisco.However, the hype surrounding the technology has yet to enter a market share of Cisco, which generated $ 3 billion in cash flow during the quarter."We beat all our competitors were concerned," Chambers said triumphantly.Chambers explained that rivals sell "building blocks inexpensive" lack the experience of Cisco in providing customer support for its full range of switches and routers. If one of these machines cost dies, the owner probably have no idea who to call for help, he said.But for a man who claims that Cisco is not threatened by the emerging technology, who spoke much during the call. Often with indifference.And there are subtle signs that activity switching Cisco Legacy feels some pressure from potential competition. When an analyst asked why switching activities of the Chambers of the company grew by only 6% in the quarter, suggesting that Cisco numbers only look good, because last year's figures were so bad, they grew defensive Cameras ."I'll never apologize for growth in the single digits for change," said Chambers challenge.While new technology may be gaining ground, Chambers believes Cisco has everything you need to withstand the challenge. He said 3,000 people took five years to develop high-quality products of the company. But now, the company tries to be as nimble as a startup said. As proof, Chambers said a new router in development, said 225 people required only to build more than 12 months."We can now compete with the best startups in the world and run on them," Chambers said.These are provocative and Chambers seems determined to fight potential rivals. The new CEO Chuck Robbins also be determined and certain that his predecessor remains to be seen.
Sunday 10 May 2015
200-120 Exam Question No 7
Question No 7:
A network interface port has collision detection and carrier sensing enabled on a shared twisted pair
network. From this statement, what is known about the network interface port?
A. This is a 10 Mb/s switch port.
B. This is a 100 Mb/s switch port.
C. This is an Ethernet port operating at half duplex.
D. This is an Ethernet port operating at full duplex.
E. This is a port on a network interface card in a PC.
Answer: C
A network interface port has collision detection and carrier sensing enabled on a shared twisted pair
network. From this statement, what is known about the network interface port?
A. This is a 10 Mb/s switch port.
B. This is a 100 Mb/s switch port.
C. This is an Ethernet port operating at half duplex.
D. This is an Ethernet port operating at full duplex.
E. This is a port on a network interface card in a PC.
Answer: C
Sunday 3 May 2015
200-120 Exam Question No 6
Question No 6:
Refer to the exhibit.
After HostA pings HostB, which entry will be in the ARP cache of HostA to support this trans- mission?
A. Exhibit A
B. Exhibit B
C. Exhibit C
D. Exhibit D
E. Exhibit E
F. Exhibit F
Answer: A
Refer to the exhibit.
After HostA pings HostB, which entry will be in the ARP cache of HostA to support this trans- mission?
A. Exhibit A
B. Exhibit B
C. Exhibit C
D. Exhibit D
E. Exhibit E
F. Exhibit F
Answer: A
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