Q. What is the function of a default gateway in a network?
-
A.
To connect devices within the same subnet
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B.
To route traffic to external networks
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C.
To assign IP addresses dynamically
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D.
To filter network traffic
Solution
A default gateway routes traffic from a local network to external networks, allowing devices to communicate outside their subnet.
Correct Answer:
B
— To route traffic to external networks
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Q. What is the main benefit of using Variable Length Subnet Masking (VLSM)?
-
A.
Reduces the number of subnets
-
B.
Allows for more efficient use of IP addresses
-
C.
Simplifies routing tables
-
D.
Increases broadcast domains
Solution
VLSM allows for subnets of different sizes, enabling more efficient use of IP addresses based on the needs of each subnet.
Correct Answer:
B
— Allows for more efficient use of IP addresses
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Q. What is the maximum number of hosts that can be addressed in a subnet with a subnet mask of 255.255.255.128?
-
A.
126
-
B.
128
-
C.
254
-
D.
256
Solution
A subnet mask of 255.255.255.128 allows for 2^7 - 2 = 126 usable host addresses (subtracting 2 for network and broadcast addresses).
Correct Answer:
A
— 126
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Q. What is the maximum number of subnets that can be created with a /22 subnet mask?
Solution
A /22 subnet mask allows for 4 subnets when using the remaining bits for subnetting (2^(32-22) = 4).
Correct Answer:
A
— 4
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Q. Which IP address is reserved for the loopback interface?
-
A.
192.168.1.1
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B.
127.0.0.1
-
C.
10.0.0.1
-
D.
172.16.0.1
Solution
The IP address 127.0.0.1 is reserved for the loopback interface, allowing a device to communicate with itself.
Correct Answer:
B
— 127.0.0.1
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Q. Which of the following IP address ranges is designated for private use in Class B?
-
A.
10.0.0.0 to 10.255.255.255
-
B.
172.16.0.0 to 172.31.255.255
-
C.
192.168.0.0 to 192.168.255.255
-
D.
169.254.0.0 to 169.254.255.255
Solution
The IP address range 172.16.0.0 to 172.31.255.255 is designated for private use in Class B networks.
Correct Answer:
B
— 172.16.0.0 to 172.31.255.255
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Q. Which protocol is commonly used for dynamic IP address assignment?
-
A.
DHCP
-
B.
DNS
-
C.
HTTP
-
D.
FTP
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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Q. Which protocol is primarily used for dynamic IP address allocation?
-
A.
DHCP
-
B.
DNS
-
C.
ARP
-
D.
ICMP
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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