Cisco试题库:ccna最新真题(下)(3)
添加时间: 2007-9-9 0:34:25 作者: Cisco考试认证 阅读次数:93 来源: http://www.d9soft.com
36: One of your co-workers at Acme, Inc., needs to convert the binary number 11010110 into a decimal. What is the decimal equivalent?
A. 198
B. 214
C. 252
D. 255
37: One of your co-workers at Acme, Inc., needs to convert the binary number 10110110 into a decimal. What is the decimal equivalent?
A. 182
B. 192
C. 202
D. 212
38: You are configuring a subnet for the Acme, Inc., branch office in Beijing. You need to assign IP addresses to hosts in this subnet. You have been given the subnet mask of 255.255.255.224. Which of these IP addresses would be valid? (Choose three.)
A. 15.234.118.63
B. 92.11.178.93
C. 134.178.18.56
D. 192.168.16.87
E. 201.45.116.159
F. 217.63.12.192
39: You are a network technician at Acme, Inc. You have subnetted the 208.98.112.0 network with a /28 mask. Your boss asks you how many usable subnetworks and usable host addresses per subnet this will provide. What should you tell her, assuming your router is using ip subnet-zero?
A. 62 networks and 2 hosts
B. 6 networks and 30 hosts
C. 8 networks and 32 hosts
D. 16 networks and 16 hosts
E. 16 networks and 14 hosts
40: What is a disadvantage of using a connection-oriented protocol such as TCP?
A. Packet acknowledgment might add overhead.
B. Packets are not tagged with sequence numbers.
C. Loss or duplication of data packets is more likely to occur.
D. The application layer must assume responsibility for the correct sequencing of the data packets.
41: You are a network technician at Acme, Inc. You have subnetted the 192.168.72.0 network with a /30 mask for connections between your routers. Your boss asks you how many usable subnetworks and usable host addresses per subnet this will provide. What should you tell her, assuming your router cannot use ip subnet-zero?
A. 62 networks and 2 hosts
B. 6 networks and 30 hosts
C. 8 networks and 32 hosts
D. 16 networks and 16 hosts
E. 14 networks and 14 hosts
42: Which of the following IP addresses are considered "network" addresses with a /26 prefix? (Choose two.)
A. 165.203.2.0
B. 165.203.5.192
C. 165.203.6.63
D. 165.203.6.191
E. 165.203.8.255
43: Identify three valid hosts in any subnet of 192.168.32.0, assuming the subnet mask used is 255.255.255.240. (Choose three.)
A. 192.168.32.33
B. 192.168.32.112
C. 192.168.32.119
D. 192.168.32.126
E. 192.168.32.175
F. 192.168.32.208
44: A Class C network address has been subnetted with a /27 mask. Which of the following addresses is a broadcast address for one of the resulting subnets?
A. 198.57.78.33
B. 198.57.78.64
C. 198.57.78.97
D. 198.57.78.97
E. 198.57.78.159
F. 198.57.78.254
45: What is the subnetwork address for a host with IP address 165.100.5.68/28?
A. 165.100.5.0
B. 165.100.5.32
C. 165.100.5.64
D. 165.100.5.65
E. 165.100.5.31
F. 165.100.5.1
46: Your boss wants to know what TCP stands for. What do you tell him?
A. Transmission Check Protocol
B. Transport Check Protocol
C. Transmission Control Protocol
D. Transport Control Protocol
47: Your boss wants to know what UDP stands for. What do you tell him?
A. Unreliable Data Protocol
B. Unreliable Data Program
C. User-Defined Protocol
D. User Datagram Protocol
48: Which of the following statements accurately describes UDP?
A. UDP copies files between a computer and a system running rshd, the remote shell service (daemon).
B. UDP is a member of the TCP/IP suite of protocols that governs the exchange of electronic mail between message transfer agents.
C. UDP is a member of the TCP/IP suite of protocols and is used to copy files between two computers on the Internet. Both computers must support their respective roles: one must be a client, and the other a server.
D. UDP is a TCP complement that offers a connectionless datagram service guaranteeing neither delivery nor correct sequencing of delivered packets (much like IP).
49: Which of the following host addresses are members of networks that can be routed across the public Internet? (Choose three.)
A. 10.20.12.64
B. 172.16.32.129
C. 172.64.32.34
D. 192.168.23.252
E. 196.104.12.95
F. 214.192.48.254
50: You are connecting your Serial 0/1 interface to the Internet. Which of the following need to be done for the connection to work? (Choose two.)
A. Assign a public IP address.
B. Use the shutdown command.
C. Use the no shutdown command.
D. Make sure the interface is running in full-duplex.
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