Data Communication - Review Session

The application layer is ______________ of the OSI model.

• Layer 1

• Layer 3

• Layer 5

• Layer 7

What is the default subnet mask for a Class C address?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• There is no default subnet mask for Class C addresses

How many octets are in an IPv4 address?

• 2

• 4

• 6

• 8

It is a network protocol that automatically provides a host with its IP address and other related configuration info.

• FTP

• DNS

• DHCP

• HTTP

What device is considered an intermediary device?

• File Server

• Laptop

• IP Phone

• None of these

What can be identified by examining the network layer header?

• The destination device on the local media

• The destination host address

• The bits that will be transferred over the media

• The source application or process creating the data

How many bits are used to represent the network ID in a Class B address?

• 8

• 16

• 24

• 32

Which of the following is not a valid IPv4 address?

• 10.0.0.1

• 192.168.0.256

• 172.16.0.254

• None of these

Which protocol provides connectionless network layer services?

• IP

• TCP

• HTTP

• None of these

NIC is a hardware component, typically a circuit board, which is installed on a computer so that it can connect to a network. Without this, a computer cannot be connected to a network.

• TRUE

• FALSE