CCNA真题(1)TCP/IP:地址和协议
来源:优易学  2011-12-2 10:56:54   【优易学:中国教育考试门户网】   资料下载   IT书店

 

16: RFC 1918 defines the private IP address ranges. Which of the following IP addresses are considered part of these ranges? (Choose three.)
A. 10.23.45.67
B. 126.21.34.56
C. 172.16.32.1
D. 172.31.234.55
E. 192.169.4.5
 
17: A new network is being designed for your company, Acme, Inc. If you use a Class C IP network, which subnet mask will provide one usable subnet per department while allowing enough usable host addresses for each department specified in the table?
Department
 A. 255.255.255.0
B. 255.255.255.192
C. 255.255.255.224
D. 255.255.255.240
E. 255.255.255.248
 
18: Which of these protocols provides data transport, relying on the error correction capabilities of the application itself?
A. UDP
B. TCP
C. SNMP
D. ICMP
 
19: Which of the following are used by TCP to ensure reliable delivery of data? (Choose two.)
A. MAC address resolution
B. Sequence numbers
C. Acknowledgments
D. Ping
E. Routing updates
 
20: You discover that you are able to adjust the window size of the TCP segment. You increase the window size to test the results. What will you observe happening on your network?
A. Increased throughput
B. Decreased throughput
C. Increased latency
D. Decreased reliability

21: Your organization is using the 192.168.1.0/24 address space. You need 28 subnets. What subnet mask would you use to create these subnets?
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.255.192
D. 255.255.255.224
E. 255.255.255.240
F. 255.255.255.248
 
22: Which of the following protocols maps IP addresses to MAC addresses for connectivity to occur between two hosts?
A. ARP
B. RARP
C. SLARP
D. DHCP
 
23: Your junior network administrator cannot seem to ping a host in another network and asks you why it isn't working. Which of the following is not an answer that you would give him?
A. The host's default gateway is down.
B. The destination host is not powered on.
C. The IP address of the router interface is incorrect.
D. The IP address of the switch to which the destination host connects is incorrect.
E. The host is in a different subnet.
 
24: Which of the following classes of IP addresses is utilized for multicasting?
A. Class A
B. Class B
C. Class C
D. Class D
 
25: You give your IT department a spreadsheet of IP addresses and their subnets. You receive a call from one of the junior techs asking what the /26 means next to the IP addresses. You tell her:
A. It represents the number of hosts possible on that subnetwork.
B. It represents the number of subnetworks that are being used.
C. It represents the class of IP address being used.
D. It represents the number of bits in the subnet mask that are 1.

26: You are given an IP network of 192.168.5.0 and told that you need to separate this network into subnetworks that can support a maximum of 16 hosts per subnet. This will help alleviate congestion on the network. What subnet mask can you use to create the subnets necessary to meet the given criteria?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.224
E. 255.255.255.240
 
27: Which of the following would a Class A network be assigned to?
A. Government agency
B. Small-to-medium sized corporation
C. SOHO
D. An individual
 
28: A client has the IP address 192.168.5.98/27. Which of the following addresses are on the same subnet as this host? (Choose two.)
A. 192.168.5.95
B. 192.168.5.100
C. 192.168.5.128
D. 192.168.5.110
 
29: Which of the following IP addresses is not a public IP address that can be routed over the Internet?
A. 2.3.4.5
B. 11.12.13.14
C. 165.23.224.2
D. 172.31.45.34
E. 203.33.45.22
 
30: You are given a Class B network. What is the default subnet mask assigned to the Class B network?
A. 255.255.255.255
B. 255.255.0.0
C. 255.224.0.0
D. 0.0.0.0
 
31: You are troubleshooting your router's interfaces. For some reason, the Ethernet interface will not accept the IP address of 192.168.5.95/27 that you've assigned. Which of the following explains the router's refusal to take the IP address?
A. Class C addresses cannot be assigned to Ethernet interfaces.
B. The /27 is an invalid mask.
C. It is a broadcast address.
D. It is a public IP address.
E. It is a private IP address.
 
32: You are a network technician at Acme, Inc. You are required to divide the 172.12.0.0 network into subnets. Each subnet must have the capacity of 458 IP addresses. Also, according to the requirements, you must provide the maximum number of subnets. Which subnet mask should you use?
A. 255.255.255.254
B. 255.255.254.0
C. 255.255.240.254
D. 255.255.0.0
 
33: What is the subnetwork and broadcast IP address of 192.168.2.37 with the subnet mask of 255.255.255.248?
A. 192.168.2.24/192.168.2.31
B. 192.168.2.32/192.168.2.39
C. 192.168.2.40/192.168.2.47
D. 192.168.2.48/192.168.2.55
E. 192.168.2.56/192.168.2.63
 
34: One of your co-workers at Acme, Inc., needs to convert the binary number 11011010 into a decimal. What is the decimal equivalent?
A. 218
B. 219
C. 220
D. 221
E. 222
 
35: One of your co-workers at Acme, Inc., needs to convert the binary number 01011010 into a decimal. What is the decimal equivalent?
A. 75
B. 83
C. 90
D. 97

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