CCST IP Addressing & Subnetting 4

Question 1

A technician sees the IP address 192.168.1.255 on a /24 network. What is this address?

Accepted Answer

Broadcast address

Answer

The last address in any subnet (all host bits set to 1) is the directed broadcast address for that network.

Question 2

What is the total number of IPv4 addresses in a /22 subnet?

Accepted Answer

1024

Answer

A /22 leaves 10 host bits, so 2^10 = 1024 total addresses.

Question 3

Which command on a Cisco device shows the IP address and subnet mask configured on an interface?

Accepted Answer

show ip interface brief

Answer

The 'show ip interface brief' command displays IP addresses and status for all interfaces in a concise format.

Question 4

A host with IP 192.168.10.50/28 tries to communicate with 192.168.10.65. Are these hosts on the same subnet?

Accepted Answer

No, they are on different subnets

Answer

/28 creates 16-address blocks; .50 belongs to 192.168.10.48–.63 and .65 belongs to 192.168.10.64–.79, so they are on different subnets.

Question 5

What does VLSM (Variable Length Subnet Masking) allow network engineers to do?

Accepted Answer

Use different subnet mask sizes within the same network to minimize IP address waste

Answer

VLSM allows subnets of different sizes within the same address space, allocating exactly as many addresses as each segment needs.

(CCST) Cisco Certified Support Technician Networking Practice Test