1.
What layer of the Open System Interconnect model defines the electrical, mechanical,procedural, and functional specifications for links between communicating network systems?
A. 
B. 
C. 
D. 
2.
The Institute of Electrical and Electronics Engineers divide the Open System Interconnect Data Link Layers into what two sublayers?
A. 
High Level Data Link Control and Synchronous Data Link Control
B. 
Logical Link Control and Media Access Control
C. 
Distance Vector and Link State
D. 
3.
At what Open System Interconnect layer do network switches and bridges operate?
A. 
B. 
C. 
D. 
4.
At what Open System Interconnect layer do routers operate?
A. 
B. 
C. 
D. 
5.
At what Open System Interconnect layer are common data compression and encryption schemes used?
A. 
B. 
C. 
D. 
6.
What Open System Interconnect layer is closest to the end user?
A. 
B. 
C. 
D. 
7.
What is a formal set of rules and conventions that govern how computers exchangeinformation over a network medium?
A. 
B. 
C. 
D. 
8.
What topology defines the layout of a network’s devices and media?
A. 
B. 
C. 
D. 
9.
What topology defines the way in which devices communicate, and data is transmitted,throughout the network?
A. 
B. 
C. 
D. 
10.
What topology consists of devices connected to a common, shared cable?
A. 
B. 
C. 
D. 
11.
What topology consists of cable segments from each computer connected to a centralized component?
A. 
B. 
C. 
D. 
12.
What topology combines two or more different physical topologies in a single network?
A. 
B. 
C. 
D. 
13.
Which network protocol has the Department of Defense chosen as its standard to govern theflow of information?
A. 
B. 
NetBIOS Extended User Interface
C. 
Transport Control Protocol/Internet Protocol
D. 
Internetwork Packet Exchange/ Sequenced Packet Exchange
14.
What Transmission Control Protocol/Internet Protocol network layer protocol provides the service of matching a known IP address for a destination device to a Media Access Control address?
A. 
B. 
Address Resolution Protocol
C. 
Reverse Address Resolution Protocol
D. 
Internet Control Message Protocol
15.
What Transmission Control Protocol/Internet Protocol network layer protocol provides the IP address for a device that knows its own MAC address ?
A. 
B. 
Address Resolution Protocol
C. 
Reverse Address Resolution Protocol
D. 
Internet Control Message Protocol
16.
What Transmission Control Protocol/Internet Protocol network layer protocol provides messaging that can help with troubleshooting?
A. 
B. 
Address Resolution Protocol
C. 
Reverse Address Resolution Protocol
D. 
Internet Control Message Protocol
17.
What Transmission Control Protocol/Internet Protocol transport layer protocol provides reliable data delivery services?
A. 
B. 
C. 
Transmission Control Protocol
D. 
Internet Control Message Protocol
18.
What application within Transmission Control Protocol/Internet Protocol is used to send and receive files via TCP?
A. 
B. 
Trivial File Transfer Protocol
C. 
Simple Mail Transfer Protocol
D. 
HyperText Transfer Protocol
19.
What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?
A. 
B. 
C. 
D. 
Metropolitan Area Network
20.
What type of network makes use of tunneling and security protocols to enables a group of two or more computer systems to communicate over the public Internet?
A. 
B. 
C. 
D. 
Metropolitan Area Network
21.
Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?
A. 
B. 
C. 
D. 
22.
How many bits are in an IPv4 address?
A. 
B. 
C. 
D. 
23.
Instead of using binary, how are IPv4 addresses expressed to be more user-friendly?
A. 
B. 
C. 
D. 
24.
Using a range of 1–126 in the first octet of an IPv4 address, what class does it belong to?
A. 
B. 
C. 
D. 
25.
What IPv4 class address is used for networks with about 250 nodes?
A. 
B. 
C. 
D.