_______ is the process of sending a signal to a client that gives its permission to transmit or asks it to receive.

_______ is the process of sending a signal to a client that gives its permission to transmit or asks it to receive. a. Contention b. Polling c. Pooling d....

Media access control:

Media access control:  a. is not very important in point-to-point with full duplex configuration b. is not very important in local area networks c....

CSMA/CA is an acronym for:

CSMA/CA is an acronym for: a. Carrier Sense Multiple Access with Collision Acknowledgment b. Carrier Sense Mode Access with Carrier Avoidance c. Carrier...

Media access control refers to:

Media access control refers to: a. the price of fiber optic cable b. security over floppy disks in a user environment c. the ability for a user to...

In general, controlled approaches:

In general, controlled approaches:  a. work better than contention approaches for small networks that have low usage b. work better than contention...

Which of the following is true about roll call polling?

Which of the following is true about roll call polling?  a. It can not be modified to increase priority of clients or terminals. b. It does...

Which of the following is not a controlled access method of media access control?

Which of the following is not a controlled access method of media access control?  a. Token passing b. CSMA/CD c. polling d. roll call polling e....

________ is not a function of a data link protocol.

________ is not a function of a data link protocol. a. Media access control b. Message delineation c. Amplitude shift keying d. Indicating when a...

Inverse multiplexing means:

Inverse multiplexing means:  a. combining several low speed circuits to enable them to be transmitted across one high speed circuit b. multiplexing...

Frequency division multiplexing:

Frequency division multiplexing:  a. operates by statistically time slicing the signal b. operates by dividing the signal into different frequencies c....

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels...

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels...

A(n) ___________ divides one high-speed communication circuit into several lower speed circuits for the primary reason of saving communication line costs.

A(n) ___________ divides one high-speed communication circuit into several lower speed circuits for the primary reason of saving communication line...

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals.

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals. a. voice converter b. modem c. codec d....

Which of the following is a characteristic of sound waves that can be modulated to convert digital data into analog signals?

Which of the following is a characteristic of sound waves that can be modulated to convert digital data into analog signals? a. phase b. attenuation c....

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels...

______ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0.

______ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0. a. digitizing. b. sampling c. modulation d. demodulation e....

_______ is not a form of modulation used to transform digital data into analog signals.

_______ is not a form of modulation used to transform digital data into analog signals. a. synchronous time division b. amplitude shift keying c....

The height of a sound wave is called its:

The height of a sound wave is called its: a. frequency b. phase c. amplitude d. bandwidth e. furlong Answer:...

The direction in which the sound wave begins is known as:

The direction in which the sound wave begins is known as: a. amplitude, which our ears detect as loudness b. frequency, which our ears detect as pitch c....

_______ is a modulation technique that combines two different amplitude combinations with eight different phase combinations modulation to send four bits per symbol.

_______ is a modulation technique that combines two different amplitude combinations with eight different phase combinations modulation to send four...

In which type of modulation is a 1 distinguished from a 0 by shifting the direction in which the wave begins?

In which type of modulation is a 1 distinguished from a 0 by shifting the direction in which the wave begins? a. bandwidth modulation b. amplitude...

With respect to converting digital data into analog signals, AM stands for:

With respect to converting digital data into analog signals, AM stands for: a. Asynchronous Manchester b. Analog Multimode c. Amplitude Modulation d....

_______ is not a type of digital signaling technique.

_______ is not a type of digital signaling technique. a. Non-return-to-zero signaling b. Unipolar signaling c. Manchester encoding d. Return-to-zero...

With which type of digital signaling does the signal always return to zero volts after each bit?

With which type of digital signaling does the signal always return to zero volts after each bit? a. Non-return-to-zero signaling b. Unipolar signaling c....

Which type of digital signaling would experience fewer errors because it has more distinct signals?

Which type of digital signaling would experience fewer errors because it has more distinct signals? a. unipolar b. serial c. bipolar d. attenuation e....

Which of the following statements is correct?

Which of the following statements is correct? a. Parallel transmission is most often used for sending data on a circuit that is made up of one wire. b....

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode. a. serial b. frequency division c....

The representation of the character A by the group of 8 bits, 01000001, is an example of:

The representation of the character A by the group of 8 bits, 01000001, is an example of: a. digital coding b. phase modulation c. binary modulation d....

____ is one of the most commonly used coding schemes used in data transmission.

____ is one of the most commonly used coding schemes used in data transmission. a. ASCII b. ISDN c. MAU d. ATM e. FDM Answer:...

A coding scheme that uses 10 bits to represent each character is capable of representing _________ different characters.

A coding scheme that uses 10 bits to represent each character is capable of representing _________ different characters. a. 256 b. 20 c. 200 d. 512 e....

Microwave transmission:

Microwave transmission:  a. is a type of high frequency radio communication b. requires a clear line-of-sight path c. is typically used for long...

Which of the following would be considered a type of wireless media?

Which of the following would be considered a type of wireless media?  a. unshielded twisted pair b. shielded twisted pair c. coaxial cable d....

Which of the following is not a function of the data link layer?

Which of the following is not a function of the data link layer? a. deciding when to transmit messages over the media b. formatting the message by...

Which of the following type of media is least susceptible to eavesdropping?

Which of the following type of media is least susceptible to eavesdropping?  a. fiber optics b. twisted pair c. microwave d. infrared e. coaxial...

Of the following, which is not true about fiber optic cable?

Of the following, which is not true about fiber optic cable? a. it is thinner than unshielded twisted pair cable b. it is lighter than unshielded...

Which of the following media is least susceptible to noise?

Which of the following media is least susceptible to noise?  a. fiber optic cable b. coaxial cable c. twisted pair d. unshielded twisted pair e....

Which of the following media has the lowest error rates and the highest transmission speeds?

Which of the following media has the lowest error rates and the highest transmission speeds? a. coaxial cable b. unshielded twisted pair c. shielded...

Which of the following media can best withstand harsh environmental conditions?

Which of the following media can best withstand harsh environmental conditions?  a. shielded twisted pair b. unshielded twisted pair c. Cat...

The earliest type of fiber optic systems were:

The earliest type of fiber optic systems were:  a. Graded index multimode b. Attenuated c. Multimode d. Single mode e. Step mode Answer:...

The type of media usually installed on homes and businesses by the telephone company is called ____________.

The type of media usually installed on homes and businesses by the telephone company is called ____________. a. fiber optic cable b. coaxial cable c....

_____ is a line-of-sight type of wireless media.

________ is a line-of-sight type of wireless media. a. coaxial cable b. microwave c. radio d. twisted pair e. fiber optic Answer:...

Which of the following would be considered a type of wireless media?

Which of the following would be considered a type of wireless media?  a. unshielded twisted pair b. shielded twisted pair c. coaxial cable d....

The two basic types of media are:

The two basic types of media are:  a. statistical and frequency b. guided and wireless (radiated) c. local and wide area d. attenuator and Gaussian e....

The ability to transmit in both directions, but only in one direction at a time is an example of _______________ transmission.

The ability to transmit in both directions, but only in one direction at a time is an example of _______________ transmission. a. simplex b. full-duplex c....

Having a conversation with someone using a cellular phone is an example of _________ transmission.

Having a conversation with someone using a cellular phone is an example of _________ transmission. a. simplex b. full-duplex c. half-duplex d. analog e....

Media access control:

Media access control:  a. is not very important in point-to-point with full duplex configuration b. is not very important in local area networks c....

Each of the circuits connected to a switch is a separate _______________ circuit connecting the switch to a device on the network.

Each of the circuits connected to a switch is a separate _______________ circuit connecting the switch to a device on the network. a. multipoint b....

Which is not true about point-to-point circuits?

Which is not true about point-to-point circuits? a. point-to-point circuits are dedicated to the use of the two computers. b. point-to-point circuits...

A(n) __________ circuit is another name for a multipoint configuration.

A(n) __________ circuit is another name for a multipoint configuration. a. analog b. dedicated c. point-to-point d. shared e. simplex Answer:...

_______ is the basic physical layout of the circuit.

_______ is the basic physical layout of the circuit. a. point-to-point configuration b. configuration c. circuit configuration d. circuit design e....

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals.

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals. a. voice converter b. modem c. codec d....

To get more "bandwidth" in a digital transmission, you must:

To get more "bandwidth" in a digital transmission, you must: a. increase the range of frequencies available for a transmission b. increase the loudness...

Which type of digital signaling would experience fewer errors because it has more distinct signals?

Which type of digital signaling would experience fewer errors because it has more distinct signals? a. unipolar b. serial c. bipolar d. attenuation e....

With which type of digital signaling does the signal always return to zero volts after each bit?

With which type of digital signaling does the signal always return to zero volts after each bit? a. Non-return-to-zero signaling b. Unipolar signaling c....

_______ is not a type of digital signaling technique.

_______ is not a type of digital signaling technique. a. Non-return-to-zero signaling b. Unipolar signaling c. Manchester encoding d. Return-to-zero...

Transmission speeds:

Transmission speeds: a. are the same among all media b. are not a factor in selecting a media because all media have more than enough speed to serve...

Which of the following is not a key advantage of digital transmission?

Which of the following is not a key advantage of digital transmission? a. It permits only low transmission rates. b. It is more efficient. c. It...

________ refers to the transmission characteristics of the circuit.

________ refers to the transmission characteristics of the circuit. a. handshaking b. virtual circuit c. bonding d. logical circuit e. physical circuit Answer:...

Which is not a function of the physical layer:

Which is not a function of the physical layer: a. transmission of bits. b. defining the rules by which one and zeroes are transmitted. c. providing...

IMAP (Internet Message Access Protocol):

IMAP (Internet Message Access Protocol): a. is a set of standards that define how email is to be processed between mail servers b. is exactly the...

Which of the following is not an application layer standard?

Which of the following is not an application layer standard? a. HTTP b. POP c. T1 d. IMAP e. HTML Answer:...

To get a page from the Web, a user must type in a URL, which stands for:

To get a page from the Web, a user must type in a URL, which stands for: a. Unknown Resource Locator b. Unknown Router Location c. Uniform Router...

To interact with the World Wide Web, a client computer needs an application layer software package called a:

To interact with the World Wide Web, a client computer needs an application layer software package called a: a. Web browser b. Web server c. Telnet...

Marc Andreessen led a team that developed the first graphical Web browser, which was called:

Marc Andreessen led a team that developed the first graphical Web browser, which was called: a. Internet Explorer b. Mosaic c. Firebird d. Netscape...

The idea for a special hypertext network, called the World Wide Web, was conceived of by:

The idea for a special hypertext network, called the World Wide Web, was conceived of by: a. Microsoft in 1994 as part of the Windows 95 project b....

One disadvantage of the ____________ architecture is that places a greater load on the network.

One disadvantage of the ____________ architecture is that places a greater load on the network. a. two-tier b. three tier c. one-tier d. n-tier e....

An N-tiered architecture:

An N-tiered architecture:  a. is generally more "scalable" than a three-tiered architecture b. is generally less "scalable" than a three-tiered...

In the three tier architecture the software on the client computer is responsible for____________.

In the three tier architecture the software on the client computer is responsible for____________. a. presentation logic b. application logic c....

A(n) _________-tiered architecture uses only two sets of computers: one set of clients and one set of servers.

A(n) _________-tiered architecture uses only two sets of computers: one set of clients and one set of servers. a. one b. two c. three d. five e....

Client-server architectures:

Client-server architectures:  a. cannot connect computers that use different hardware b. are one of the least used network architectures today c....

In a client-server network, _________ gets software from different vendors to work together.

In a client-server network, _________ gets software from different vendors to work together. a. a front-end processor b. serverware c. middleware d....

How are the application architecture functions split up in a client-server network?

How are the application architecture functions split up in a client-server network?  a. the presentation logic and data storage are on the client,...

With the two-tier client-server architecture, the client is responsible for the ________ logic and the server is responsible for the ________ logic.

With the two-tier client-server architecture, the client is responsible for the ________ logic and the server is responsible for the ________ logic. a....

With a client-based network, one fundamental problem is that:

With a client-based network, one fundamental problem is that:  a. the clients each must store all the data b. the server does not have any data...

With the "thin client" architecture, when an application changes, only the _________ with the application logic needs to be updated.

With the "thin client" architecture, when an application changes, only the _________ with the application logic needs to be updated. a. client b....

A "thick client" architecture approach:

A "thick client" architecture approach:  a. always is a two-tier network architecture b. always is an n-tiered architecture c. places all or...

With respect to costs for a client-server network, which of the following is true?

With respect to costs for a client-server network, which of the following is true? a. Personal computers used as clients in a client-server network...

One underlying problem with a host-based network is that:

One underlying problem with a host-based network is that:  a. there are economies of scale because all computer resources are centralized b....

The high bandwidth requirements (high communications needs) for video have slowed its integration into computer networks.

The high bandwidth requirements (high communications needs) for video have slowed its integration into computer networks. Answer: Tr...

The integration of voice, video, and data communications is also known as __________.

The integration of voice, video, and data communications is also known as __________.  a. convergence b. peer-to-peer networks c. metropolitan...

Which of the following is not an important future trend in communication and networking?

Which of the following is not an important future trend in communication and networking?  a. development of online batch systems b. integration...

Pervasive networking means that:

Pervasive networking means that:  a. the five-layer network model will be used to design all networks b. all networks of the future will be...

Which of the following is not an important future trend in communication and networking?

Which of the following is not an important future trend in communication and networking?  a. development of online batch systems b. integration...

The three stages of the formal standardization process are _______.

The three stages of the formal standardization process are _______. a. specification, identification of choices and acceptance. b. planning, implementing...

________ ensure that hardware and software produced by different vendors work together.

________ ensure that hardware and software produced by different vendors work together. a. Delimiters b. Standards c. ASPs d. RBOCs e. Intranets Answer:...

Which of the following is not true about de facto standards?

Which of the following is not true about de facto standards?  a. They never evolve into formal standards. b. They are those standards that emerge...

The primary reason for networking standards is to:

The primary reason for networking standards is to: a. simplify cost accounting for networks b. ensure that hardware and software produced by different...

Which of the following is not true about formal standards?

Which of the following is not true about formal standards? a. They are always developed before de facto standards. b. One example exists for network...

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer.

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer. Answer:...

In which layer of the Internet model would the HTTP standard be used?

In which layer of the Internet model would the HTTP standard be used? a. physical b. application c. transport d. network e. data link Answer:...

The fourth layer of the OSI model is called the __________ layer.

The fourth layer of the OSI model is called the __________ layer. a. network b. transport c. session d. data link e. presentation Answer:...

The ____________ layer of the OSI model is responsible for data format translation.

The ____________ layer of the OSI model is responsible for data format translation. a. session b. presentation c. physical d. application e. transport Answer:...

Which of the following is true with respect to the data link layer?

Which of the following is true with respect to the data link layer?  a. It accepts streams of bits from the application layer. b. It is responsible...

As part of the five-layer network model used in this textbook, the data link layer sits directly between:

As part of the five-layer network model used in this textbook, the data link layer sits directly between:  a. the physical and the application...

Which of the following is a term used to group together the physical and data link layers?

Which of the following is a term used to group together the physical and data link layers?  a. Internetwork layers b. Hardware layers c. Software...

The _________ layer is responsible for routing of messages from the sender to the final destination.

The _________ layer is responsible for routing of messages from the sender to the final destination. a. data communication layer b. resident layer c....

In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model.

In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model. a. data link and network b. session, presentation...

Which layer of the OSI model is responsible for ensuring that all packets sent are received by the destination station by dealing with end-to-end issues?

Which layer of the OSI model is responsible for ensuring that all packets sent are received by the destination station by dealing with end-to-end issues? a....

Which layer of the OSI model is responsible for ensuring flow control so that the destination station does not receive more packets that it can process at any given time?

Which layer of the OSI model is responsible for ensuring flow control so that the destination station does not receive more packets that it can process...