Question

Subnet mask 255.255.255.0 can never be used for class B network.

Question 1 options:

	True
	False

Question 2 (1 point)

In CIDR notation, /22 indicates there are 22 ones in the subnet mask.

Question 2 options:

	True
	False

Question 3 (1 point)

When deploy a network inside a commercial building, there must be only one LAN.

Question 3 options:

	True
	False

Question 4 (1 point)

When a packet is going to be routed to a computer in a LAN, other external routers only need to know the address of the LAN router.

Question 4 options:

	True
	False

Question 5 (1 point)

Supernetting can borrow bits (change 1 to 0 in the mask) to accommodate more hosts.

Question 5 options:

	True
	False

Question 6 (1 point)

Which one is an advantage of subnetting?

Question 6 options:

	enhance security
	improve performance
	simplify troubleshooting
	all of them

Question 7 (1 point)

Given the following IP address and its subnet mask, what is the network ID?

IP address: 192.168.123.132

mask: 255.255.255.0

Question 7 options:

	192.168.123.0
	192.168.123.1
	192.168.224.0
	192.168.224.1

Question 8 (1 point)

Given the following network ID, how many bits needed to be borrowed to create 3 subnets?

network ID: 192.168.76.0

Question 8 options:

	1
	2
	3
	4

Question 9 (1 point)

Given the following subnet mask, how many hosts can be accommodated in the corresponding subnet?

255.255.248.0

Question 9 options:

	510
	1022
	2046
	none of them

Question 10 (1 point)

Given the following network ID, suppose we want to divide the network into 8 subnets, which one cannot be a network ID for an individual subnet?

network ID: 192.168.45.0

Question 10 options:

	192.168.45.0
	192.168.45.64
	192.168.45.224
	192.168.45.248

Answer 1

Q-1. True

Q-2. True

Q-3. False, It may or may not be one LAN.

Q-4. True

Q-5. True

Q-6. all of them

Q-7. 192.168.123.0

Q-8. 2

Q-9. 2046. First and last network reserve for network address and broadcast address respectively.

Q-10. 192.168.45.248. It is the host address of the last subnet.