ATM(异步传输模式)技术中“异步”的含义是(48)。
- A．采用的是异步串行通信技术
- B．网络接口采用的是异步控制方式
- C．周期性地插入ATM信元
- D．可随时插入ATM信元
-
(38)
- A．but rather
- B．rather too
- C．rather than
- D．rather that
-
(37)
- A．Bellman-Ford
- B．Ford-Fulkerson
- C．Dijkstra
- D．RIP
-
(36)
- A．more
- B．less
- C．same
- D．most
-
(35)
- A．derived from
- B．deviated from
- C．was derived from
- D．was deviated from
-
In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
Open Shortest Path First(OSPF)is a(71)routing algorithm that(72)work done on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires(73)processing power. The(74)algorithm is used to calculate routes. OSPF routing table updates only take place when necessary,(75)at regular intervals.
- A．distance-vector
- B．link-state
- C．flow-based
- D．selective flooding
-
(32)
- A．charged
- B．fined
- C．free
- D．controlled
-
(33)
- A．point
- B．start
- C．length
- D．end
-
(31)
- A．computing
- B．incurious
- C．incurved
- D．incurred
-
(30)
- A．long
- B．short
- C．large
- D．small
-
Packet-switching wireless networks are preferable(66)when transmissions are(67)bemuse of the way charges are(68)per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are(69)for the(70)of time they use the network.
- A．to
- B．for
- C．than
- D．only
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