单项选择题

Which of the following is an example of a Class B TCP/IP address?（）

A.4.4.4.2
B.122.29.38.110
C.155.43.29.219
D.199.200.201.202

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单项选择题

Which of the following pin pairs remain with the same wire color for either T568A or T568B?（）

A. Pair 1 & 8
B. Pair 2 & 7
C. Pair 3 & 6
D. Pair 4 & 5

多项选择题

Which of the following is the correct arrangement of the data pairs in a T568B wire pattern?（）

A. Orange & orange/white on pins 1 & 2
B. Blue & blue/white on pins 4 & 5
C. Orange & orange/white on pins 4 & 5
D. Brown & brown/white on pins 1 & 2
E. Green & green/white on pins 3 & 6

单项选择题

A user is trying to use Remote Desktop to connect to another computer on the LAN. Theconnection fails. The technician opens up a command prompt and types the following: “telnetcomputernamE. 3389” and also gets the same error message.
Which of the following is the MOSTlikely cause of this error, assuming that the OS firewall has been disabled?（）

A. The antivirus software is blocking the incoming connection.
B. The ISP is blocking Remote Desktop at their end.
C. The RDP connection has been configured to use a non-standard port.
D. The telnet service has not been installed.