第四章测试1.RARP protocol translates IP addresses into MAC addresses.
A:对 B:错
答案:B
2.The PING command is implemented by the ICMP echo request/reply.
A:对 B:错 3.An IP address consists of a network number field and a host number field.
A:对 B:错 4.The main task of the Internet’s Domain Name System (DNS) is to:
A:Translate port numbers to IP addresses B:Provide an authority for registering domain names C:Translate mnemonic（记忆的） names to IP addresses D:Specify the standards for Internet domain names 5.The Internet’s network layer is responsible for moving network-layer packets known as ( ) from one host to another.
A:frame B:message C:datagram D:segment
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