[单项选择]Layer n on one machine carries on a conversation with layer n on another machine. The rules and conventions used in this conversation are collectively known as the layer n
A. topology
B. protocol
C. service
D. peer

[单项选择]Layer n on one machine carries on a conversation with layer n on another machine. The rules and conventions used in this conversation are collectively known as the layer n
A. topology
B. protocol
C. service
D. peer

[单项选择]Mary gives one account of the conversation, and Fred another. It's difficult to ______the two versions.
A. reconcile
B. identify
C. announce
D. coincide

[单项选择]One machine can do as much work as ______.
A. 40% of the people
B. 4% of the people in the world
C. 40 people
D. 75 000 people

[单项选择]In comparison with traditional Layer 2 and Layer 3 system, Cisco Catalyst 6500 Virtual Switching System (VSS) 1440 simplifies a network by the means of:（）
A. providing loop-free technology.
B. providing HSRP/VRRP.
C. managing additional routing peers.
D. managing two nodes and configuration.

[单项选择]Compared to the traditional Layer 2 and Layer 3 system, how does the Cisco Catalyst 6500 VSS1440 simplify the network? （）
A. provides loop-free technology
B. manages additional routing peers
C. provides HSRP/VRRP
D. manages two nodes and configuration

[单项选择]What prompted this conversation


A. The man is learning how to use a computer.
B. The woman is showing the man how to put page numbers on a document.
C. The man is printing a document.
D. The man is using his computer to do mathematical functions.

[单项选择]In the 7-layer OSI model, which layer switching will take place?（）
A. Layer one
B. Layer two
C. Layer three
D. Layer four

[单项选择]

Passage Four Television carries more national advertising than any others in the United States. The same is true in some smaller countries such as Spain and Portugal, where it is the only medium reaching a general national audience. In many countries, Sweden and Denmark, for example--the stateowned television accepts no advertising. In many other countries the amount of commercial time is extremely limited, as in France, Germany, and Italy. Soviet state-owned television began accepting a limited amount of advertising in 1988. The chief reason for the population of television among United States advertisers is that it it reaches a vast number of people at the same time. While it can cost well over 100,000 dollars, a 30- second commercial on network television can be seen and heard by as many as 25 million viewers. For manufacturers who must make prospects aware of their products and convince them of its benefits immediately, there is nothing as efficient as television adver
A. TV can make advertisers aware of their products.
B. TV is more popular than any other medium in the United States.
C. TV covers a large audience at the same time.
D. TV carries more national advertising than other media in the United States.

[单项选择]The phrase "force some financially fragile carries into liquidation" (Paragraph 6 ) may probably mean ______.
A. compel them to reduce their flight
B. make them do nothing but to declare bankruptcy
C. push them to be destroyed
D. bring them into a liquid state

[单项选择]An institution that properly carries the name university is a more comprehensive and complex institution than any other kind of higher education ______.
A. settlement
B. establishment
C. construction
D. structure

[单项选择]What is the conversation mainly about


A. Choosing names for children.
B. Family names.
C. Up-to-date names.
D. Names of famous writers.