【单选题】【消耗次数：1】
一个IP地址包含网络地址与()。
①
广播地址
②
多址地址
③
主机地址
④
子网掩码
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【多选题】
一个C类地址的子网掩码为255.255.255.192，那么（ ）
①
子网号为第四段的前2位
②
每个子网主机数目为62个
③
划分子网并没有减少网络可用的主机数
④
子网号可以用IP地址和子网掩码按位与得到
【单选题】
如果IP地址为202.112.143.171，其子网地址为202.112.143.160，则对应的子网掩码应为（ ）。
①
255.255.255.224
②
255.255.255.192
③
255.255.255.128
④
255.255.255.64
【单选题】
主机的IP地址是165.95.116.39,对应的子网掩码为255.255.0.0,那么主机标识是________.
①
165.95
②
165.95.116
③
116.39
④
39
【单选题】
下列IP地址与子网掩码中，不正确的组是____。
①
259.197.184.2与255.255.255.0
②
127.0.0.1与255.255.255.0
③
202.196.64.5与255.255.255.224
④
10.10.3.1与255.255.255.192
随机题目
【单选题】
4. This kind of plant ____ a lot of water at all times.
①
assumes
②
limits
③
produces
④
requires
【单选题】
14. It is ____ pity that you cannot come to the wedding.
①
such a
②
so
③
such as
④
many a
【单选题】
The man was informed ____ the arrival of the new products. ?
①
to ?
②
on ?
③
of ?
④
with?
【单选题】
4. David watched her car until it ____ from view.
①
remained
②
delayed
③
grew
④
disappeared
【单选题】
You’re ____ your time trying to persuade him. He’ll never join us. ?
①
spending ?
②
wasting ?
③
losing ?
④
missing?
【单选题】
The boy lost his ____when he stepped on the icy road.
①
way
②
weight
③
balance
④
direction
【单选题】
Never in my life ____ or seen such a thing.
①
I have heard of
②
I had heard of
③
have I heard of
④
did I hear of
【单选题】
—I’m sorry to keep you waiting. —Oh, not at all. I___ here only a few minutes.
①
have been
②
had been
③
was
④
will be
【单选题】
The bus is late and Julie is cold. She____ for the bus for 10 minutes.
①
waits
②
waited
③
has been waiting
④
has waited