Which of the following protocols uses port 119, by default?（）

单项选择题When the DHCP server is unavailable for a network, how will PCs attempt to configure their NICs?（）

A. PCs will attempt to use the last address assigned to them
B. PCs will pull from a static address pool
C. PCs will use APIPA
D. PCs will prompt the user for an address

单项选择题A user is trying to connect their new desktop to the network but is unable to get an IP address. The technician tests the cable and finds that there are too many open pairs. Which of the following wiring standards needs to be used in the replacement cable?（）

A. 568B
B.Crossover
C. 569-A
D. 607-A

单项选择题An administrator needs to know the workstation name of a user who called in for support in orderto remotely manage it. After calling the user and having the user open a command prompt, whichof the following commands would the administrator ask the user to type?（）

A. Netstat
B. Ifconfig
C. Hostname
D. Ping

单项选择题A technician is troubleshooting a network connectivity issue with a users desktop configured to use a static IP address. The technician notes the following configuration: Which of the following changes will allow the desktop to communicate properly with remote networks?（）

A. Changing the DNS to 172.16.1.100
B. Changing the WINS server to 172.174.136
C. Changing the netmask to 255.255.255.0
D. Changing the default gateway to 172.16.3.1

单项选择题A technician temporarily needs an additional network connection in their office to test a newworkstation. Which of the following is the BEST solution to add a temporary network connection?（）

A. Install a small network switch
B. Use port mirroring on the switch
C. Split the pairs of the existing jack
D. Install a CSU/DSU