Q. If a network has a subnet mask of /22, how many subnets can be created from a /16 network?
Solution
A /22 subnet mask allows for 4 subnets to be created from a /16 network (2^(22-16) = 2^6 = 4).
Correct Answer:
A
— 4
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Q. If a network has a subnet mask of 255.255.255.128, how many subnets can be created?
Solution
A subnet mask of 255.255.255.128 allows for 2 subnets, as it uses 1 bit for subnetting (2^1 = 2).
Correct Answer:
B
— 4
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Q. In a subnet mask of 255.255.255.0, how many usable IP addresses are available?
-
A.
254
-
B.
256
-
C.
512
-
D.
1024
Solution
A subnet mask of 255.255.255.0 allows for 256 total addresses, but 2 are reserved (network and broadcast), leaving 254 usable addresses.
Correct Answer:
A
— 254
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Q. In IP addressing, what does the term 'supernetting' refer to?
-
A.
Combining multiple subnets into a larger network
-
B.
Dividing a network into smaller subnets
-
C.
Assigning IP addresses dynamically
-
D.
None of the above
Solution
Supernetting refers to the practice of combining multiple smaller subnets into a larger network to simplify routing.
Correct Answer:
A
— Combining multiple subnets into a larger network
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Q. What is the broadcast address for the subnet 192.168.10.0/24?
-
A.
192.168.10.0
-
B.
192.168.10.255
-
C.
192.168.10.1
-
D.
192.168.10.128
Solution
The broadcast address for a /24 subnet is the last address in the range, which is 192.168.10.255.
Correct Answer:
B
— 192.168.10.255
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Q. What is the maximum number of hosts that can be addressed in a /29 subnet?
Solution
A /29 subnet provides 8 total addresses, but 2 are reserved (network and broadcast), allowing for 6 usable host addresses.
Correct Answer:
B
— 6
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Q. What is the maximum number of hosts that can be addressed in a /30 subnet?
Solution
A /30 subnet allows for 4 addresses, but only 2 are usable for hosts (1 for network and 1 for broadcast).
Correct Answer:
A
— 2
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Q. What is the primary function of the ARP protocol?
-
A.
To resolve IP addresses to MAC addresses
-
B.
To assign IP addresses
-
C.
To manage routing tables
-
D.
To control error detection
Solution
ARP (Address Resolution Protocol) is used to resolve IP addresses to their corresponding MAC addresses on a local network.
Correct Answer:
A
— To resolve IP addresses to MAC addresses
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Q. What is the primary function of the subnet mask in IP addressing?
-
A.
To identify the network and host portions of an IP address
-
B.
To encrypt data packets
-
C.
To assign IP addresses dynamically
-
D.
To route packets between networks
Solution
The subnet mask is used to identify which part of an IP address refers to the network and which part refers to the host.
Correct Answer:
A
— To identify the network and host portions of an IP address
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