2012年思科认证（CCNA）考试练习题精选9
41. Which of the following statements is true of ARP (下面对A R P的陈述中，哪一个是正确的.？
A. It makes a MAC address logically independent of the physical hardware
B. It makes it necessary for the administrator to physically manage the MAC address of each N I C
C. It integrates routing function with the physical and data link layers
D. It routes packets based on destination host, not on destination network
42. A host’s ARP cache is good forever once it has been created (一个主机的A R P高速缓存 一旦创建，则它永远工作良好.。
A. True
B. False
43. ARP is a broadcast protocol, and ARP caching is used because broadcasts are expensive ( A R P是一个广播协议，并且使用了A R P高速缓存，原因是广播太昂贵了.。
A. True
B. False
44. Reverse Address Resolution Protocol (RARP. is termed“r e v e r s e”because (反向地址解析协议( R A R P .中的“反向”的含义是.：
A. It is used by the system that knows its IP address but does not know its MAC address
B. It is used by the system that knows its MAC address but does not know its IP address
C. It is used by the system that knows the destination’s IP address but does not know the d e s t i n a t i o n ’s MAC address
D. It is used by the system that knows the destination’s MAC address but does not know the d e s t i n a t i o n ’s IP address
45. Inverse Address Resolution Protocol (InARP. is generally used by (逆向地址解析协议( I n A R P .通常由什么使用.？
A. Broadcast networks
B. Nonbroadcast networks
C. Both broadcast and nonbroadcast networks