多项选择题
You have been asked to develop an application that uses only connection-oriented protocols. Which two protocols can you use?（）
A. PPP
B. UDP
C. TCP
D. ICMP
相关考题
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多项选择题
Which two characteristics describe the UDP protocol?（）
A. limited error checking
B. defined timers
C. no recovery mechanisms
D. three-way handshake -
多项选择题
Which two statements are true of a network mask?（）
A. A subnet mask specifies the portion of an IP address that is in a binary format.
B. A subnet mask specifies the portion of an IP address that is in a decimal format.
C. A subnet mask specifies the portion of an IP address that represents a network prefix.
D. A subnet mask specifies the portion of an IP address that represents network hosts. -
单项选择题
What is the purpose of a network mask?（）
A. It is used in conjunction with the wildcard mask to determine the number of hosts on a network
B. It is used to define which parts of the IP address are allocated to host addresses and network prefixes
C. It is used to hide subnets from external networks by masking the subnets with NAT
D. It is used to differentiate a network as a classful network or a classless network
