FREE DOD Network & Systems Administration Questions and Answers

Question 1

What is the primary role of a network administrator?

Accepted Answer

To install and configure networking hardware and software.

Answer

To develop software applications.

Answer

To provide customer service support.

Answer

To manage database systems.

Question 2

What is the purpose of a subnet mask in a network?

Accepted Answer

It specifies the size of the network and distinguishes network and host portions.

Answer

It encrypts data in the network.

Answer

It provides authentication for devices.

Answer

It prevents unauthorized access.

Question 3

What does TCP/IP stand for?

Accepted Answer

Transmission Control Protocol/Internet Protocol.

Answer

Transmission Communication Process/Internet Procedure.

Answer

Total Communication Protocol/Information Protocol.

Answer

Technical Control Program/Information Process.

Question 4

What is DNS (Domain Name System)?

Accepted Answer

It translates domain names into IP addresses.

Answer

It assigns IP addresses to devices.

Answer

It manages web traffic.

Answer

It monitors network traffic.

Question 5

What is a firewall?

Accepted Answer

A software that prevents unauthorized access to a network.

Answer

A physical device that transmits data.

Answer

A server that stores information.

Answer

A tool that optimizes data transfer.

Question 6

What is VPN (Virtual Private Network)?

Accepted Answer

It provides anonymous browsing by masking your IP address.

Answer

It is a software for file sharing.

Answer

It is a tool for increasing network speed.

Answer

It is a backup solution for cloud data.

Question 7

What is the purpose of NAT (Network Address Translation)?

Accepted Answer

It allows multiple devices to share a single public IP address.

Answer

It encrypts data for secure transmission.

Answer

It speeds up internet connections.

Answer

It increases network bandwidth.

Question 8

What is the role of DHCP (Dynamic Host Configuration Protocol)?

Accepted Answer

It assigns IP addresses automatically.

Answer

It monitors network activity.

Answer

It improves data transfer rates.

Answer

It blocks unauthorized network traffic.

Question 9

What is the difference between IPv4 and IPv6?

Accepted Answer

IPv6 has a larger address space than IPv4.

Answer

IPv6 is more secure than IPv4.

Answer

IPv4 uses 128-bit addresses, and IPv6 uses 32-bit addresses.

Answer

IPv6 is used only for wireless connections.