Level 3 - Subnetting quiz

Question 1: What is the purpose of subnetting a network?

• a) To increase network security
• b) To simplify network management
• c) To improve network performance
• d) All of the above

Which of the following is the correct subnet mask for the IP address 192.168.5.0/24?

• a) 255.255.255.0
• b) 255.255.0.0
• c) 255.0.0.0
• d) 255.255.255.255

If you borrow 3 bits from the host portion of an IP address, how many subnets can you create?

• a) 2
• b) 4
• c) 6
• d) 8

In the subnetting example given, what is the network ID for the subnet with the network address 192.168.5.64?

• a) 192.168.5.0
• b) 192.168.5.32
• c) 192.168.5.64
• d) 192.168.5.128

How many usable host addresses are available in each subnet when 3 bits are borrowed for subnetting?

• a) 30
• b) 62
• c) 126
• d) 254

What is the CIDR notation for the subnet with a subnet mask of 255.255.248.0?

• a) /21
• b) /22
• c) /23
• d) /24

Which subnetting method allows you to create subnets of different sizes and reduce IP address waste?

• a) Fixed Length Subnet Mask (FLSM)
• b) Variable Length Subnet Mask (VLSM)
• c) Classless Inter-Domain Routing (CIDR)
• d) Supernetting

What is the ANDing result of the IP address 172.16.77.54/21 with its subnet mask?

• a) 172.16.64.0
• b) 172.16.72.0
• c) 172.16.80.0
• d) 172.16.88.0

Which process involves combining several subnets to reduce the number of entries in a routing table?

• a) Subnetting
• b) Supernetting
• c) VLSM
• d) CIDR

What is the purpose of a screened subnet in network security?

• a) To increase network performance
• b) To simplify network management
• c) To protect publicly accessible resources
• d) To separate departments within a network