Computer Networking exam review

Question: DNS organizes the name to IP address mappings:

Answer Choices:
Hierarchically
In a relational database table

Answer: Hierarchically

Question: When you use a GPS to navigate to the destination, the street address of the final destination is analogous to the:

Answer Choices:
IP address of a packet
Header length of a packet
MAC address of a frame
Port address of an application

Answer: IP address of a packet

Question: The IP address 172.16.80.125 is written in binary notation as:

Answer Choices:
10101100 00010000 01010000 01111101
10101100 00010000 01010000 01111101
10101100 00010000 01010000 01111100
10101100 00010000 01010000 01111101

Answer: 10101100 00010000 01010000 01111101

Question: Subnetting is

Answer Choices:
A way of reducing the size of networks
A way of reducing IP addresses
A way of breaking down large blocks of IP addresses into smaller address blocks
A way of distributing applications

Answer: A way of breaking down large blocks of IP addresses into smaller address blocks

Question: The binary number 11000011 represents the decimal number:

Answer Choices:
189
187
197
199

Answer: 195

Question: A web server would be allocated an IP address using:

Answer Choices:
Manual DHCP allocation
None of the above
Dynamic DHCP allocation
Automatic DHCP allocation

Answer: Manual DHCP allocation

Question: The OSI model has _____ layers.

Answer Choices:
3
7
5
6

Answer: 7

Question: SDN is useful for:

Answer Choices:
Home networking
End user connectivity
Data center operations
Internet service providers

Answer: Data center operations

Question: Single mode fiber is preferred over multi-mode fiber for short distances.

Answer Choices:
True
False

Answer: False

Question: The web is an effective filter of information because:

Answer Choices:
Most web pages are created by people or programs with a great interest in ensuring that the content on the page is correct and engaging
Most web pages are automatically generated by computers
Most web pages are located in exotic locations
Most web pages are used for marketing

Answer: Most web pages are created by people or programs with a great interest in ensuring that the content on the page is correct and engaging

Question: Using CIDR, an organization that needs 2,000 IP addresses is best served by a:

Answer Choices:
/24 address block
/20 address block
/22 address block
/21 address block

Answer: /21 address block

Question: The binary representation of the decimal number 231 is:

Answer Choices:
11100011
11100111
11100001
11100001

Answer: 11100111

Question: An organization with a class B network address uses 8 bits for the subnet ID. Each subnet in this organization can have ______ hosts.

Answer Choices:
64
512
256
128

Answer: 256

Question: Each autonomous system is identified by:

Answer Choices:
Its AS number
Its MAC address
Its host name
Its IP address

Answer: Its AS number

Question: IP provides:

Answer Choices:
Error-free delivery
Guaranteed delivery
Best effort delivery
Priority delivery

Answer: Best effort delivery

Question: An address is:

Answer Choices:
A unique label that helps locate an object on a network.
The name of an application.
The familiar name of an object.
A unique label associated with an object.

Answer: A unique label that helps locate an object on a network.

Question: If two /16 IP address blocks are aggregated, the aggregated block will be a:

Answer Choices:
/17 address block
/16 address block
/14 address block
/15 address block

Answer: /14 address block