Subnetting Questions and Answers

Practice Mode
Showing 10 of 43 questions
Q21
What does a subnet mask do
  • A Hides the IP address
  • B Explanation: A subnet mask separates the network and host parts of an IP address.
  • C Encrypts data packets
  • D Assigns MAC addresses
Answer: Option B
Explanation: A subnet mask separates the network and host parts of an IP address.
Q22
Which subnet mask represents a /24 network
  • A 255.0.0.0
  • B 255.255.0.0
  • C Explanation: A /24 subnet has 24 network bits, equal to 255.255.255.0.
  • D 255.255.255.252
Answer: Option C
Explanation: A /24 subnet has 24 network bits, equal to 255.255.255.0.
Q23
How many usable hosts are available in a /30 subnet
  • A 1
  • B Explanation: A /30 subnet provides 4 addresses, 2 of which are usable.
  • C 4
  • D 6
Answer: Option B
Explanation: A /30 subnet provides 4 addresses, 2 of which are usable.
Q24
What is the default subnet mask for a Class C network
  • A 255.0.0.0
  • B 255.255.0.0
  • C Explanation: Class C networks use a default mask of 255.255.255.0.
  • D 255.255.255.255
Answer: Option C
Explanation: Class C networks use a default mask of 255.255.255.0.
Q25
Which address is not assignable to a host
  • A Explanation: The network address identifies the subnet and cannot be assigned to a host.
  • B First host address
  • C Last host address
  • D Any private IP address
Answer: Option A
Explanation: The network address identifies the subnet and cannot be assigned to a host.
Q26
What is the broadcast address used for
  • A Identifying the router
  • B Explanation: The broadcast address sends packets to all hosts in the subnet.
  • C Assigning IP addresses
  • D Connecting different networks
Answer: Option B
Explanation: The broadcast address sends packets to all hosts in the subnet.
Q27
How many subnets can be created using 3 borrowed bits
  • A 4
  • B 6
  • C Explanation: Number of subnets equals 2³, which is 8.
  • D 16
Answer: Option C
Explanation: Number of subnets equals 2³, which is 8.
Q28
Which notation is used to represent the number of network bits
  • A Dotted decimal
  • B Binary notation
  • C Explanation: CIDR notation shows the number of network bits using a slash.
  • D Hexadecimal
Answer: Option C
Explanation: CIDR notation shows the number of network bits using a slash.
Q29
What is the subnet mask for /26
  • A 255.255.255.0
  • B Explanation: /26 means 26 network bits, equal to 255.255.255.192.
  • C 255.255.255.224
  • D 255.255.255.240
Answer: Option B
Explanation: /26 means 26 network bits, equal to 255.255.255.192.
Q30
How many usable hosts are in a /25 subnet
  • A 64
  • B Explanation: /25 provides 128 total addresses, 126 usable.
  • C 128
  • D 254
Answer: Option B
Explanation: /25 provides 128 total addresses, 126 usable.

📚 More from Networking

← All Topics 🎯 Practice ⏱️ Take Test 🔍 Search
Networking
Back to Networking
Other Subjects
Questions and Answers for Competitive Exams Various Entrance Test