Question: The data link is responsible for sending data between:
Answer Choices:
None of the above
Devices on neighboring networks
Devices on a single network
Devices anywhere on the internet
Answer: Devices on a single network
Question: The session layer in the OSI model is responsible for:
Answer Choices:
Specifying end user needs
Creating and terminating connections
Error control
Answer: Creating and terminating connections
Question: Echo is not a useful error detection techniques in computer networking because
Answer Choices:
Errors may cancel out during the echo
It is complex to use
It is difficult to implement
It is time consuming
Answer: Errors may cancel out during the echo
Question: The binary representation of the decimal number 231 is
Answer Choices:
11100011
11100111
11001111
11000011
Answer: 11100111
Question: Single mode fiber is preferred over multi-mode fiber for short distances.
Answer Choices:
True
False
Answer: False
Question: The disadvantage of address classes was that:
Answer Choices:
It could support network of different sizes.
It wanted too many IP addresses, particularly among the largest networks.
It was too easy to obtain an IP address block.
None of the above.
Answer: It wanted too many IP addresses, particularly among the largest networks.
Question: One feature common to most computer software and data communications is:
Answer Choices:
The use of routing
The use of signaling
The use of layering to organize functionality
The use of packetization
Answer: The use of layering to organize functionality
Question: An organization with a class B network address has 50 subnets. Each subnet in this organization can have at most ______ hosts.
Answer Choices:
256
128
512
1024
Answer: 1024
Question: The common packet format that can be transferred by any networking technology and that serves all applications is defined at the ______ layer.
Answer Choices:
Network layer
Transport layer
Data Link layer
Application layer
Answer: Transport layer
Question: A network address is 131.247.160.0/19. The 19 implies that
Answer Choices:
19 bits are reserved for the host part of IP addresses on the network
19 bits are reserved for the network part of IP addresses on the network
There are 19 subnets in the network
There are 19 IP addresses available on the network
Answer: 19 bits are reserved for the network part of IP addresses on the network
Question: If an organization has a subnet mask of 255.255.252.0, each subnet in the organization can have at most ______ hosts.
Answer Choices:
1,024
512
2,048
256
Answer: 1,024
Question: The IP address 192.168.50.75 is written in binary notation as:
Answer Choices:
11000000 10101000 00110010 01001011
11000001 10101000 00110011 01001011
11000000 10101000 00110010 01001001
11000000 10101001 00110010 01001011
Answer: 11000000 10101000 00110010 01001011
Question: Signals in copper wire are transmitted as:
Answer Choices:
Electrical signals
Sound signals
Smoke signals
Light signals
Answer: Electrical signals
Question: An organization has 20 subnets. The subnet part of the IP addresses in the organization must have at least _______ bits.
Answer Choices:
7
5
4
6
Answer: 5
Question: All of the following are examples of using broadcasting to transmit data, except
Answer Choices:
A letter in the mail addressed to a friend
Junk mail
College classroom
Satellite radio transmission
Answer: A letter in the mail addressed to a friend
Question: One feature common to most computer software and data communications is:
Answer Choices:
The use of routing
The use of signaling
The use of layering to organize functionality
The use of packetization
Answer: The use of layering to organize functionality
Question: An organization with a class B network address has 200 subnets. Each subnet in this organization can have at most ______ bits for the host ID.
Answer Choices:
9
6
8
7
Answer: 6
Question: CIDR stands for:
Answer Choices:
Classless inter-domain routing
Classless inter-district routing
Classless international and domestic routing
Classed inter-domain routing
Answer: Classless inter-domain routing
Question: The left-most bits of an IP address identify the:
Answer Choices:
Host on the network.
The manufacturer of the host’s networking hardware.
The country in which the host is located.
The network in which the host is located.
Answer: The network in which the host is located.
Question: At which layer of the OSI model are you likely to see acknowledgments of data segments?
Answer Choices:
Network
Presentation
Application
Physical
Transport
Answer: Transport
Question: Switches discover the MAC addresses of computers connected on the different ports by looking at the
Answer Choices:
Source address of outgoing packets
Destination address of outgoing packets
Destination address of incoming packets
Source address of incoming packets
Answer: Source address of incoming packets
Question: The presentation layer in the OSI model is responsible for:
Answer Choices:
Presenting information to end users
Specifying end user needs
Error control
Syntax conversion from host specific syntax to network transfer
Answer: Syntax conversion from host specific syntax to network transfer