题目内容
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●在Linux中，可以通过(64)命令来查看目录文件。
(64) A.ps
B.ls
C.dir
D.list
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更多“●在Linux中，可以通过（64)命令来查看目录文件。（64…”相关的问题
A、vim sjh.txt
B、touch sjh.txt
C、>sjh.txt
D、>>sjh.txt
E、~sjh.txt
F、<sjh.txt<br> G、#sjh.txt
H、$sjh.txt
A. .../test1.htm
B. .../works/test1.htm
C. ./works/test1.htm
D. ./../test1.htm
(25) A.TCP/IP
B.IPX/SPX
C.NetBuilder
D.NetBIOS
(8)A．奇校验能够检测出信息传输过程中所有出错的信息位
B．偶校验能够检测出信息传输过程中所有出错的信息位
C．奇校验能够检测出信息传输过程中一位数据出错的情况，但不能检测出是哪一位出错
D．偶校验能够检测出信息传输过程中两位数据出错的情况，但不能检测出是哪两位出错
(57) A.1．坚持型
B．非坚持型
C．P．坚持型
D．0-坚持型
(58)A．介质利用率低，但冲突概率低
B．介质利用率高，但冲突概率也高
C．介质利用率低，且无法避免冲突
D．介质利用率高，可以有效避免冲突
●We have already covered the topic of network addresses. The first(71) in a block (in classes A,B,and C) defines the network address. In classes A,B,and C,if the hostid is all ls, the address is called a direct broadcast address. It is used by a (72) to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a (73)address in an lP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A,B,and C.
In classes A,B,and C,an address with all Is for the netid and hostid (32 bits) defines a(74) address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However,a router will block a packet having this type ofaddress to confine the broadcasting to the (75) network. Note that this address belongs to class E.
(71) A.datagram
B.function
C.address
D.service
(72) A.router
B.switch
C.hub
D.firewall
(73)A.source
B.destination
C.local
D.remote
(74) A.unicast
B.multicast
C.broadcast
D.anycast
(75) A.neighbor
B.next
C.remote
D.local
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