Data Communication & Network: July 2017

Unfortunately, noise itself occurs as a(n) ____ waveform, and this makes it challenging, if not extremely difficult, to separate noise from an analog waveform that represents data.

Unfortunately, noise itself occurs as a(n) ____ waveform, and this makes it challenging, if not extremely difficult, to separate noise from an analog...

The most common example of ____ data is the human voice.

The most common example of ____ data is the human voice. a. sampling b. baud c. digital d. analog Answer: ...

____ are represented as continuous waveforms that can be at an infinite number of points between some given minimum and maximum.

____ are represented as continuous waveforms that can be at an infinite number of points between some given minimum and maximum. a. Analog signals b....

___ is entities that convey meaning within a computer or computer system.

___ is entities that convey meaning within a computer or computer system. a. Signals b. Data c. Impulse d. EMI Answer: ...

The addition of control information to a packet as it moves through the layers is called ____.

The addition of control information to a packet as it moves through the layers is called ____. a. encapsulation b. overloading c. payload d. filtering Answer:...

A(n) ____ connection is a nonphysical connection between sender and receiver that allows an exchange of commands and responses.

A(n) ____ connection is a nonphysical connection between sender and receiver that allows an exchange of commands and responses. a. physical b. encapsulated c....

The ____ suite was not created by a standards-making organization but by a group of computer scientists.

The ____ suite was not created by a standards-making organization but by a group of computer scientists. a. OSI model b. FTP protocol c. OSI model d....

___ ensures that the network does not become saturated at any one point.

___ ensures that the network does not become saturated at any one point. a. End-to-end error control b. Congestion control c. End-to-end flow control d....

The ____ layer of the OSI model performs congestion control.

The ____ layer of the OSI model performs congestion control. a. network b. data link c. physical d. session Answer: ...

____ is a service that controls which user's computer talks when during the current session by passing a software token back and forth.

____ is a service that controls which user's computer talks when during the current session by passing a software token back and forth. a. Token...

The ____ layer is responsible for establishing sessions between users for token management.

The ____ layer is responsible for establishing sessions between users for token management. a. network b. application c. transport d. session Answer:...

The ____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted.

The ____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted. a....

The ____ in a network architecture define a model for the functions or services that need to be performed.

The ____ in a network architecture define a model for the functions or services that need to be performed. a. servers b. workstations c. routers d....

A ____ is a high-speed network that interconnects multiple sites within a close geographic region, such as a large urban area.

A ____ is a high-speed network that interconnects multiple sites within a close geographic region, such as a large urban area. a. metropolitan area...

The personal area network was created in the late ____.

The personal area network was created in the late ____. a. 1970s b. 1980s c. 1990s d. 2000s Answer: ...

The devices that usually connect two or more LANs are the switch, hub, and ____.

The devices that usually connect two or more LANs are the switch, hub, and ____. a. workstation b. access point c. server d. router Answer:...

The Internet "talks" only ____, so users must use software that supports this protocol.

The Internet "talks" only ____, so users must use software that supports this protocol. a. IPX/SPX b. DSL c. TCP/IP d. FTP Answer:...

A modem and a dial-up telephone service provides data transfer rates of approximately ____.

A modem and a dial-up telephone service provides data transfer rates of approximately ____. a. 56,000 bits per second (56 kbps) b. 112,000 bits per...

In a(n) ____ system, a user at a microcomputer, or client machine, issues a request for some form of data or service.

In a(n) ____ system, a user at a microcomputer, or client machine, issues a request for some form of data or service. a. wireless b. client/server c....

A ____ is a device that is essentially a keyboard and screen with no long-term storage capabilities and little, if any, processing power.

A ____ is a device that is essentially a keyboard and screen with no long-term storage capabilities and little, if any, processing power. a. protocol b....

A ____ is an interconnection of computers and computing equipment using either wires or radio waves over small or large geographic areas.

A ____ is an interconnection of computers and computing equipment using either wires or radio waves over small or large geographic areas. a. personal...

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