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CompTIA Network+ certification Sample Questions:

1. A network administrator recently installed a web proxy server at a customer's site. The following week, a system administrator replaced the DNS server overnight. The next day, customers began having issues accessing public websites. Which of the following will resolve the issue?

A) Put the proxy server on the other side of the demarc.
B) Update the DNS server with the proxy server information.
C) Reboot the web proxy and then reboot the DNS server.
D) Implement a split horizon DNS server.

2. A network administrator has created a virtual machine in the cloud. The technician would like to connect to the server remotely using RDP. Which of the following default ports needs to be opened?

A) 3389
B) 445
C) 5004
D) 5060

3. Which of the following performs authentication and provides a secure connection by using 3DES to encrypt all information between two systems?

A) HTTPS
B) SSH
C) RSA
D) SSL

4. Which of the following wireless standards is capable of ONLY operating on 5.8GHz?

A) 802.11a
B) 802.11b
C) 802.11n
D) 802.11g

5. Which of the following can be used to prioritize network streams to optimize performance for certain traffic types?

A) VLAN
B) VPN
C) PoE
D) QoS

Solutions: