CMS专题
单选题Which of the following class networks contains 65，534 hosts？（）A Class AB Class BC Class CD Class D
题目
Class A
Class B
Class C
Class D
相似问题和答案
第1题：
A.32 networks with 8 hosts
B.62 networks with 2 hosts
C.30 networks with 16 hosts
D.32 networks with 14 hosts
第2题：
A.ClassA
B.ClassB
C.ClassC
D.ClassD
第3题：
You need subnet a Ezonexam network segment. How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?
A. 30 networks and 6 hosts.
B. 6 networks and 30 hosts.
C. 8 networks and 32 hosts.
D. 32 networks and 18 hosts.
E. 16 networks and 14 hosts.
F. None of the above
E 解析：Explanation:
A 28 bit subnet mask (11111111.11111111.11111111.11110000) applied to a class C network uses a 4 bits for networks, and leaves 4 bits for hosts. Using the 2n-2 formula, we have 24-2 (or 2x2x2x2-2) which gives us 14 for the number of hosts, and the number of networks is 24 = 16.
Incorrect Answers:
A. This would be the result of a /29 (255.255.255.248) network.
B. This would be the result of a /27 (255.255.255.224) network.
C. This is not possible, as we must subtract two from the subnets and hosts for the network and broadcast addresses.
D. This is not a possible combination of networks and hosts.
第4题：
Which of the following IP hosts would be valid for PC users, assuming that a /27 network mask was used for all of the networks?（）
- A、15.234.118.63
- B、83.121.178.93
- C、134.178.18.56
- D、192.168.19.37
- E、201.45.116.159
- F、217.63.12.192
正确答案:B,C,D
第5题：
A.15.234.118.63
B.83.121.178.93
C.134.178.18.56
D.192.168.19.37
E.201.45.116.159
F.217.63.12.192
第6题：
A. Networks that use OSPF in addition to static routes
B. Networks with classless Internet domain routing
C. Networks with multiple ISPs
D. Networks that use encryption
第7题：
Ezonexam has a Class C network and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?
A．255.255.255.192
B．255.255.255.224
C．255.255.255.240
D．255.255.255.248
E．None of the above
解析：Explanation:Usingthe2n-2formula,wewillneedtouse4bitsforsubnetting,asthiswillprovidefor24-2=14subnets.Thesubnetmaskfor4bitsisthen255.255.255.240.IncorrectAnswers:A.Thiswillgiveusonly2bitsforthenetworkmask,whichwillprovideonly2networks.B.Thiswillgiveus3bitsforthenetworkmask,whichwillprovideforonly6networks.D.Thiswilluse5bitsforthenetworkmask,providing30networks.However,itwillprovideforonlyfor6hostaddressesineachnetwork,soCisabetterchoice.
第8题：
You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?
A．225.225.224.0.
B．225.225.240.0.
C．225.225.255.0.
D．255.255.255.224
E．225.225.255.240
解析：Explanation:ThedefaultsubnetmaskforclassCnetworkis255.255.255.0.Ifonehastocreate5subnets,then3bitsarerequired.With3bitswecancreate8subnets.Theremaining5bitsareusedforHosts.Onecancreate30hostsusing5bitsinhostfield.Thismatcheswiththerequirement.IncorrectAnswers:A,B:ThisisanillegalsubnetmaskforaclassCnetwork,asthethirdoctetcannotbedividedwhenusingaclassCnetwork.C:ThisisthedefaultsubnetmaskforaclassCnetwork.Itprovidesforonenetwork,with254usablehostIPaddresses.E:Thissubnetmaskwillprovidefor14separatenetworkswith14hostseach.Thisdoesnotmeettherequirementofaminimumof18hosts.
第9题：
Your ISP assigned you a full class B address space. From this, you need at least 300 sub-networks that can support at least 50 hosts each. Which of the subnet masksbelow are capable of satisfying your needs?（）
A.255.255.255.0
B.255.255.255.128
C.255.255.252.0
D.255.255.255.224
E.255.255.255.192
F.255.255.248.0
第10题：
How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?（）
- A、30 networks and 6 hosts.
- B、6 networks and 30 hosts.
- C、8 networks and 32 hosts.
- D、32 networks and 18 hosts.
- E、14 networks and 14 hosts.
- F、None of the above
正确答案:E