CCNA真题(1)TCP/IP：地址和协议

1: Your junior network administrator wants to know what the default subnet mask is for a Class C IP address. What do you tell him?
B. 255.255.0.0
D. 255.255.255.0

A. TCP
C. IP

A. 255.255.0.0
C. 255.255.255.192

A. 172.16.12.33/28
C. 172.16.12.33/27
E. 172.16.12.35/28
G. 172.16.12.63/27
5: The address 172.16.208.16/20 is a host address in which of the following subnets?
B. 172.16.192.0–255.255.240.0
D. 172.16.224.0–255.255.240.0
6: You are designing an IP address scheme for your brand new remote office. The vice president of IT calls to tell you that you will be in charge of the 192.168.1.64/26 subnetwork. This supplies you with a single subnetwork with 62 hosts. You need to have at least two subnets with 14 hosts in each subnet. What custom subnet mask should you use?
B. 255.255.255.192
D. 255.255.255.240

A. One network with 254 hosts
C. Four networks with 64 hosts

A. 201.168.27.33
C. 201.168.27.119
E. 201.168.27.175

A. 201.100.5.0
C. 201.100.5.64
E. 201.100.5.31

A. TCP
C. UDP
E. Frame relay
11: Which of the following protocols is connection-oriented?
B. IP
D. Frame relay
12: You are using an application on your Windows 2000 client machines that provides error correction. You need a protocol to provide fast transport. Which protocol should your application use?
B. IP
D. SPX

A. MTU adjustment
C. Flexible Send Path

A. The ACK received will not include the segment number that was not received.
C. The sending host will send a PACK to verify segment receipt.

A. Class A
C. Class C
E. Class E
16: RFC 1918 defines the private IP address ranges. Which of the following IP addresses are considered part of these ranges? (Choose three.)
B. 126.21.34.56
D. 172.31.234.55

Department

7
Customer Support

13
HR

16

A. 255.255.255.0
C. 255.255.255.224
E. 255.255.255.248
18: Which of these protocols provides data transport, relying on the error correction capabilities of the application itself?
B. TCP
D. ICMP
19: Which of the following are used by TCP to ensure reliable delivery of data? (Choose two.)
B. Sequence numbers
D. Ping

A. Increased throughput
C. Increased latency