Title: Section B2
Course: Information and Communication Technology: Module B

Q: Layer 7 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Application Layer

Q: Layer 6 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Presentation Layer

Q: Layer 5 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Session Layer

Q: Layer 4 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Transport Layer

Q: Layer 3 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Network Layer

Q: Layer 2 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Data Link Layer

Q: Layer 1 is the…
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Session Layer
- Presentation Layer
- Application Layer
A: Physical Layer

Q: What is the increment for a Class C address with a subnet mask of 255.255.255.240?
- 8
- 16
- 32
- 64
A: 16

Q: What is the increment for a Class C address with a subnet mask of 255.255.255.224?
- 8
- 16
- 32
- 64
A: 32

Q: You are given the IP address of 192.168.75.0 and subnet mask of 255.255.255.224. What is the network address of subnet 1?
- 192.168.75.0
- 192.168.75.32
- 192.168.75.48
- 192.168.75.64
- 192.168.75.80
A: 192.168.75.32

Q: What is the default subnet mask for a Class C network?
- 255.0.0.0
- 255.255.0.0
- 255.255.255.0
- 255.255.255.255
A: 255.255.255.0

Q: What is the Default Subnet Mask for a Class B network?
- 255.0.0.0
- 255.255.0.0
- 255.255.255.0
- 255.255.255.255
A: 255.255.0.0

Q: What is the Default Subnet Mask for a Class A network?
- 255.0.0.0
- 255.255.0.0
- 255.255.255.0
- 255.255.255.255
A: 255.0.0.0

Q: What is the Network/Host formula for a Class C network?
- N.N.N.H
- N.N.H.H
- N.H.H.H
- N.N.N.N
- H.H.H.H
A: N.N.N.H

Q: What is the Network/Host formula for a Class B network?
- N.N.N.H
- N.N.H.H
- N.H.H.H
- N.N.N.N
- H.H.H.H
A: N.N.H.H

Q: What is the Network/Host formula for a Class A network?
- N.N.N.H
- N.N.H.H
- N.H.H.H
- N.N.N.N
- H.H.H.H
A: N.H.H.H

Q: A small company has a Class C network address and needs to create five subnets, each accommodating 25 hosts. Which subnet mask needs to be configured?
- 255.255.240.0
- 255.255.255.128
- 255.255.255.192
- 255.255.255.224
- 255.255.255.240
- 255.255.255.248
A: 255.255.255.224

Q: What is the maximum number of bits that can be borrowed to create subnets if a Class C network address is being used?
- 2
- 6
- 8
- 14
- 16
A: 6

Q: The internetwork is using subnets of the address 192.168.1.0 with a subnet mask of 255.255.255.224. Which address could be assigned to an interface?
- 192.168.1.31
- 192.168.1.64
- 192.168.1.127
- 192.168.1.190
- 192.168.1.192
A: 192.168.1.190

Q: What is the network address for the host with IP address 192.168.23.61/28?
- 192.168.23.0
- 192.168.23.32
- 192.168.23.48
- 192.168.23.56
- 192.168.23.60
A: 192.168.23.48

Q: Which of the following correctly pairs the dotted decimal subnet mask with the correct number of binary bits that represent the subnet mask?
- 255.255.255.192 and /25
- 255.255.255.248 and /28
- 255.255.255.224 and /26
- 255.255.255.248 and /27
- 255.255.255.240 and /28
- 255.255.255.240 and /16
A: 255.255.255.240 and /28

Q: How many hosts are available for 192.168.1.1/28?
- 14
- 15
- 16
- 17
- 18
A: 14

Q: You need to configure 52 hosts for a computer lab. Which subnet mask is appropriate?
- 255.255.255.224
- 255.255.255.248
- 255.255.254.240
- 255.255.255.192
A: 255.255.255.192

Q: Which subnet mask provides the most efficient use of a Class C address space for a company that requires 10 subnets and 12 hosts per subnet?
- 255.255.255.192
- 255.255.255.248
- 255.255.255.0
- 255.255.255.224
- 255.255.255.252
- 255.255.255.240
A: 255.255.255.240

Q: Given a Class C IP address subnetted with a /30 subnet mask, how many usable host IP addresses are available on each of the subnets?
- 1
- 2
- 4
- 8
- 252
- 254
A: 2

Q: Given the IP address 200.20.17.30/28, what is the subnet mask?
- 255.255.255.0
- 255.255.255.128
- 255.255.255.192
- 255.255.255.224
- 255.255.255.240
- 255.255.255.248
- 255.255.255.252
- 255.255.255.254
A: 255.255.255.240

Q: What three pieces of information must be assigned to a computer to statically connect it to the Internet? (Choose three)
- IP address
- subnet mask
- default gateway
- DHCP address
- DNS address
- ARP address
- RARP address
- router address
A: IP address; subnet mask; default gateway

Q: Layer 2 devices make decisions based on what? (Choose all that apply)
- MAC addresses
- Physical addresses
- IP addresses
- Logical addresses
- Port number
A: MAC addresses; Physical addresses

Q: Which of these are part of classful subnetting? (Choose all that apply.)
- The same subnet mask is used.
- Networks are all the same size.
- The first and last subnets are unusable.
- Subnet mask is not sent with routing updates.
- Networks can be different sizes.
- The first and last subnets are useable.
- Different subnet masks can be used.
- Subnet mask is sent with routing updates.
A: The same subnet mask is used.; Networks are all the same size.; The first and last subnets are unusable.; Subnet mask is not sent with routing updates.

Q: Which of these are part of classless subnetting? (Choose all that apply.)
- The same subnet mask is used.
- Networks are all the same size.
- The first and last subnets are unusable.
- Subnet mask are not sent with routing updates.
- Networks can be different sizes.
- The first and last subnets are useable.
- Different subnet masks can be used.
- Subnet mask is sent with routing updates.
A: Networks can be different sizes.; The first and last subnets are useable.; Different subnet masks can be used.; Subnet mask is sent with routing updates.

Q: Match the layer to its encapsulation.
- Data | Application/Presentation/Session
- Segments | Transport
- Packets | Network
- Frames | Data Link
- Bits | Physical

Q: Put the OSI model layers in order from top to bottom.
- 7 | Application
- 6 | Presentation
- 5 | Session
- 4 | Transport
- 3 | Network
- 2 | Data Link
- 1 | Physical

Given the IP address 200.20.2.0 and a subnet mask of 255.255.255.192, what is the first usable address?
Feedback: 200.20.0.65

A Class "C" network needs to borrow 2 bits. What is its subnet mask?
Feedback: 255.255.255.192

A Class "C" network needs to borrow 3 bits. What is its subnet mask?
Feedback: 255.255.255.224

A Class "C" network needs to borrow 4 bits. What is its subnet mask?
Feedback: 255.255.255.240

A Class "C" network needs to borrow 5 bits. What is its subnet mask?
Feedback: 255.255.255.248

A Class "C" network needs to borrow 6 bits. What is its subnet mask?
Feedback: 255.255.255.252

A Class "C" network with a /26 subnet mask. What is the increment?
Feedback: 64

A Class "C" network with a /27 subnet mask. What is the increment?
Feedback: 32

A Class "C" network with a /28 subnet mask. What is the increment?
Feedback: 16

A Class "C" network with a /29 subnet mask. What is the increment?
Feedback: 8

A Class "C" network with a /30 subnet mask. What is the increment?
Feedback: 4

Q: A Class "C" network with a /26 subnet prefix. What is the increment?
A: 64

Q: A Class "C" network with a /27 subnet prefix. What is the increment?
A: 32

Q: A Class "C" network with a /28 subnet prefix. What is the increment?
A: 16

Q: A Class "C" network with a /29 subnet prefix. What is the increment?
A: 8

Q: A Class "C" network with a /30 subnet prefix. What is the increment?
A: 4

Q: A Class "C" network needs to borrow 2 bits. What is its subnet mask?
A: 255.255.255.192

Q: A Class "C" network needs to borrow 3 bits. What is its subnet mask?
A: 255.255.255.224

Q: A Class "C" network needs to borrow 4 bits. What is its subnet mask?
A: 255.255.255.240

Q: A Class "C" network needs to borrow 5 bits. What is its subnet mask?
A: 255.255.255.248

Q: A Class "C" network needs to borrow 6 bits. What is its subnet mask?
A: 255.255.255.252