1. Which of the following is an example of a valid unicast host IP address?
A. 172.31.128.255/18
B. 255.255.255.255
C. 192.168.24.59/30
D. FFFF.FFFF.FFFF
E. 224.1.5.2
F. All of the above
2. You are the network administrator at Verizon. Verizon has been assigned the class C IP address 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network?
A. 14
B. 16
C. 30
D. 32
E. 62
F. 64
3. Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data-Link
4. Which of the commands below would you enter if you wanted to see the configuration register of your router?
A. show boot
B. show flash
C. show register
D. show version
E. show config
5. The following access list below was applied outbound on the E0 interface connected to the 192.169.1.8/29 LAN:
access-list 135 deny tcp 192.169.1.8 0.0.0.7 eq 20 any
access-list 135 deny tcp 192.169.1.8 0.0.0.7 eq 21 any
How will the above access lists affect traffic?
A. FTP traffic from 192.169.1.22 will be denied.
B. No traffic, except for FTP traffic will be allowed to exit E0.
C. FTP traffic from 192.169.1.9 to any host will be denied.
D. All traffic exiting E0 will be denied.
E. All FTP traffic to network 192.169.1.9/29 will be denied.
6: Which one of the following are the private IP addresse(s):(Check all that apply)
A: 10.23.34.182
B: 172.61.14.54
C: 192.72.35.27
D: 172.16.18.26
E: 192.168.36.162
7: If you have a class B IP network with a 10-bit subnet mask, how many subnets and hosts can you have?
A: 1024 subnets with 62 hosts
B: 1022 subnets with 64 hosts
C: 1022 subnets with 62 hosts
D: 1024 subnets with 64 hosts
8: Which of the following encapsulation sequence is correct:
A: DATA->FRAMES->PACKETS->SEGMENTS->BITS
B: DATA->FRAMES->SEGMENTS->PACKETS->BITS
C: DATA->PACKETS->FRAMES->SEGMENTS->BITS
D: DATA->SEGMENTS->PACKETS->FRAMES->BITS
9: Which IP-class provides the fewest numbers of Hosts?
A: Class A
B: Class B
C: Class C
D: Class D
E: Class E
10: What's the default subnet mask for a Class B IP address?
A: 0.0.0.0
B: 255.0.0.0
C: 255.255.0.0
D: 255.255.255.0
E: 255.255.255.255
11: Which port numbers are used by TCP and UDP to set up sessions with other hosts?
A: 1024 and above
B: 1024 and below
C: 1023 and below
D: 101 and above
E: 1023 and above
一楼：这是一家公司给的测试题，就是我没答案才让人帮忙做的，而且对方邮件中说这是多选题=_=||||
二楼：做出的答案差得好远(狂汗啊)
三楼：英文我都能看懂，就是不确定答案，不过还是谢谢了
参考资料：就是翻译一下，不知道有帮助没