Question 1

Ethernet is a standard communication protocol embedded in software and hardware devices used for building a local area network (LAN).

Accepted Answer

A) True 
 B)False  True

Question 2

Describe the ring topology.

Accepted Answer

In a ring topology,no host computer is required because each computer manages its own connectivity.Computers and devices are arranged in a circle so each node is connected to two other nodes: its upstream neighbor and its downstream neighbor.Transmission is in one direction,and nodes repeat a signal before passing it to the downstream neighbor.If any link between nodes is severed,the entire network is affected,and failure of a single node disrupts the entire network.A token ring is a common implementation of the ring topology.Modern ring topologies,such as Fiber Distributed Data Interface (FDDI),are capable of bidirectional transmission (clockwise and counterclockwise),which prevents the problems caused by a single node failure.

Question 3

In the context of communication media,what is the difference between a point-to-point and a multipoint system?

Accepted Answer

In a point-to-point system,only one device at a time uses the medium.In a multipoint system,several devices share the same medium,and a transmission from one device can be sent to all other devices sharing the link.

Question 4

A _________ is a collection of binary digits,including message data and control characters for formatting and transmitting,sent from computer to computer over a network.

Accepted Answer

A)  bandwidth
B)  packet
C)  topology
D)  protocol

Question 5

A(n)_____ is a device that connects a user to the Internet.

Accepted Answer

A)  pen drive
B)  modem
C)  cookie
D)  applet

Question 6

Why is an efficient data communication system critical to an information system?

Accepted Answer

The answer of Why is an efficient data communication system...

Question 7

Which of the following events takes place in the most basic client / server configuration?

Accepted Answer

A)  The results of a query are sent to the server.
B)  The server sends a request to the client over a network.
C)  The client receives and processes a query.
D)  The user creates a query by running client software.

Question 8

Identify the layer of the Open Systems Interconnection (OSI)model in which the Internet Protocol (IP)operates.

Accepted Answer

A)  Transport layer
B)  Physical layer
C)  Data Link layer
D)  Network layer

Question 9

A network _____ represents a network's physical layout.

Accepted Answer

A)  utility
B)  packet
C)  protocol
D)  topology

Question 10

A _________ works well for companies that are geographically dispersed.

Accepted Answer

A)  ring topology
B)  star topology
C)  mesh topology
D)  hierarchical topology

Question 11

An access point (AP)is the part of a wireless local area network (WLAN)that connects it to other networks.

Accepted Answer

A) True 
 B)False

Question 12

A communication network shortens product and service development life cycles and delivers information to those who need it faster and more efficiently.

Accepted Answer

A) True 
 B)False

Question 13

List the three main components of a typical data communication system.

Accepted Answer

The answer of List the three main components of a...

Question 14

Computers in a local area network (LAN)are usually connected to the network via a(n)_____,which is a hardware component.

Accepted Answer

A)  broadcast radio
B)  adapter card
C)  IP address
D)  network protocol

Question 15

Both Wireless LANs (WLANs)and Wireless WANs (WWANs)rely on the _________ as the communication medium.

Accepted Answer

A)  multiplexer
B)  CIA triangle
C)  controller
D)  RF spectrum

Question 16

_____ are conducted media,which can be used for both data and voice transmissions.

Accepted Answer

A)  Terrestrial microwaves
B)  Broadcast radios
C)  Coaxial cables
D)  Satellite dishes

Question 17

Which of the following media is based on line of sight?

Accepted Answer

A)  Terrestrial microwave
B)  STP wire
C)  Coaxial cable
D)  Fiber-optic cable

Question 18

Identify a true statement about distributed processing.

Accepted Answer

A)  It solves the lack of coordination in centralized processing.
B)  It solves the lack of responsiveness in centralized processing.
C)  It solves the lack of security in decentralized processing.
D)  It solves the lack of individuality in decentralized processing.

Question 19

The data transfer speed of a wide area network (WAN)depends on the _____.

Accepted Answer

A)  speed of its interconnections
B)  distance between its links
C)  thickness of its connecting cable
D)  size of its adjoining terminals

Question 20

Identify a layer of the Open Systems Interconnection (OSI)model that provides methods for controlling data flow,ordering received data,and acknowledging received data.

Accepted Answer

A)  Network layer
B)  Physical layer
C)  Data link layer
D)  Transport layer

Exam 6: Data Communication: Delivering Information Anywhere and Anytime