CompTIA Network+ IP Addressing and Subnetting Questions and Answers

Question 1

A network technician is configuring a workstation and observes its IP address is 169.254.100.51.
The user reports they cannot access the internet or the company's file server.
What is the MOST likely cause of this issue?

Accepted Answer

The workstation failed to obtain an IP address from the DHCP server.

Answer

The workstation has a duplicate IP address on the network.

Answer

The workstation is configured with a static IP address in the wrong subnet.

Answer

The router's default gateway is configured incorrectly.

Question 2

A network administrator needs to create a subnet that can support up to 25 usable host addresses. Which of the following CIDR notations provides the required number of hosts while minimizing wasted IP addresses?

Accepted Answer

/27

Answer

/26

Answer

/28

Answer

/25

Question 3

Which of the following IP addresses is a non-routable, private address according to RFC 1918?

Accepted Answer

192.168.20.1

Answer

11.200.50.15

Answer

172.32.10.25

Answer

169.254.1.10

Question 4

A network administrator is given the IP address 192.168.50.133 and the subnet mask 255.255.255.240. What is the subnet address for this host?

Accepted Answer

192.168.50.128

Answer

192.168.50.0

Answer

192.168.50.132

Answer

192.168.50.143

Question 5

A subnet mask of 255.255.252.0 is equivalent to which CIDR prefix notation?

Accepted Answer

/22

Answer

/21

Answer

/23

Answer

/24

Question 6

A company is using the network address 10.10.0.0/22. How many total IP addresses are available within this network range?

Accepted Answer

1024

Answer

256

Answer

512

Answer

2048

A network technician is configuring a workstation and observes its IP address is 169.254.100.51.The user reports they cannot access the internet or the company's file server.What is the MOST likely cause of this issue?

A network technician is configuring a workstation and observes its IP address is 169.254.100.51.
The user reports they cannot access the internet or the company's file server.
What is the MOST likely cause of this issue?