Question 1

a high speed technology that can use ordinary telephone lines for downstream transmissions speeds up to 8 Mbps and upstream speeds up to 1 Mbps
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

ADSL (Asymmetric Digital Subscriber Line) is a high speed technology that allows for downstream speeds up to 8 Mbps and upstream speeds up to 1 Mbps over ordinary telephone lines. ADSL is considered "asymmetric" because it allows for faster download speeds than upload speeds.

Question 2

a hardware device that permits a computer to exchange digital data with another computer via an analog telephone line or dedicated connection
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

A modem (short for modulator-demodulator) is a hardware device that allows a computer to communicate with another computer over an analog telephone line, ISDN connection, or other dedicated connection by converting digital data to an analog signal and vice versa. Therefore, the best choice is I - modem.

Question 3

a software flow control protocol that permits a receiving modem to notify the
sending modem that its data buffers are full
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

Xon-Xoff is a flow control protocol used in asynchronous communication between modems. It allows the receiving modem to send a control signal (Xoff) to the sender when its data buffers are full, indicating that the sender should pause transmission until the receiver sends a control signal (Xon) to resume.

Question 4

communications that occur in discrete units in which the start of a unit is signaled by a start bit at the front,and a stop bit at the back signals the end
of the unit
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

Asynchronous communication is characterized by the use of start and stop bits to indicate the beginning and end of a unit of data. This matches the description provided in the question.

Question 5

____________ uses digital communications over a communications line and has an aggregate data rate of 144 Kbps or 1.544 Mbps

Accepted Answer

The answer of ____________ uses digital communications over a communications...

Question 6

a digital modem device designed for use with the cable TV system providing
high-speed data transfer.
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

A cable modem is specifically designed to provide high-speed data transfer over a cable TV system.

Answer: D 
 A data pump is a key component of a cable modem that is responsible for modulating and demodulating the signals for transmission over the cable system.

Question 7

When connecting to an analog modem using Windows XP,which of the following is a possible port name through which you communicate to the modem?
A) COM2
B) TTY0
C) LPT1
D) UART0

Accepted Answer

The port name typically used to communicate with an analog modem on Windows XP is COM#, where "#" represents the number of the serial port being used. The most common serial port for modems is COM1 or COM2. Therefore, A is the best choice as it is the only option that could represent a serial port. TTY0, LPT1, and UART0 are not commonly used for modem communication on Windows XP.

Question 8

A desktop computer with a modem is called a ________ device because it prepares data to be transmitted.

Accepted Answer

The answer of A desktop computer with a modem is...

Question 9

Computers store data as a series of 1s and 0s represented by the presence or absence of _________.

Accepted Answer

The answer of Computers store data as a series of...

Question 10

___________ checking is a data verification process that ensures data integrity through a system of data bit comparisons between the sending and receiving computer.

Accepted Answer

The answer of ___________ checking is a data verification process...

Question 11

a hardware or software feature in modems that lets a receiving modem
communicate to the sending modem that it needs more time to process previously sent data
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

Flow control is a feature that allows the receiving modem to signal the sending modem to pause data transmission, giving it time to process previously sent data.

Question 12

What protocol does a dial-up networking connection use to access the ISP for Internet communications?
A) ISDN
B) UART
C) PPP
D) DOCSIS

Accepted Answer

Dial-up networking connections use the Point-to-Point Protocol (PPP) to establish a connection to the ISP for Internet communications. ISDN, UART, and DOCSIS are protocols used for other types of networking connections.

Question 13

an internal,automatically running program,usually in UNIX/Linux,that serves a particular function such as routing e-mail to recipients
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

A daemon is an internal, automatically running program on Unix/Linux systems that performs a specific function, such as routing email.

Note: None of the other options fit the definition given in the question.

Question 14

The _______ is a component of a modem that reads in one byte of data,adds a start and stop bit and feeds the bits to the port.

Accepted Answer

The answer of The _______ is a component of a...

Question 15

the hardware or software portion of a modem that is responsible for
converting digital data into analog signals for transmission over a telephone line
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

The data pump is responsible for converting digital data into analog signals for transmission over a telephone line.

Question 16

You have arrived at a customer site who is having problems using a modem attached to his Linux server. The GUI is not installed on the server. Which command can you use to verify and configure the modem?
A) Network Connection tool
B) /dev/getty
C) ln -s /dev/ttys1
D) minicom

Accepted Answer

The best choice to verify and configure the modem without a GUI is to use a command-line based terminal emulator such as minicom. It allows for communication with the modem and configuring it as needed. Options A, B, and C are not relevant for modem verification and configuration.

Question 17

In Unix/Linux,you refer to the first modem on the computer using which of the following?
A) /dev/ttys0
B) /dev/ttys1
C) /dev/com0
D) /dev/com1

Accepted Answer

In Unix/Linux systems, the first modem is typically referred to as /dev/ttys0. The other options, /dev/ttys1, /dev/com0, and /dev/com1, are either not standard conventions or are used in different operating systems (such as Windows).

Question 18

communications of continuous bursts or blocks of data controlled by a clock signal that starts each burst or block of data
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

Synchronous communication is defined as the transmission of continuous bursts or blocks of data that are controlled by a clock signal. This means that both the sender and receiver are synchronized and operate on a common clock signal.

Answer: D
 Data pump is a hardware device that is used to provide a high-speed connection between a computer and a network. It is responsible for transmitting data from the computer to the network and vice versa. In synchronous communication, the data pump is used to generate the clock signal that controls the transmission of data.

Question 19

an established guideline that specifies how networked data,including data sent over a telephone network,is formatted into a transmission unit
A)flow control
B)cable modem
C)synchronous communication
D)data pump
E)daemon
F)protocol
G)ADSL
H)Xon-Xoff
I)modem
J)asynchronous communication

Accepted Answer

A protocol is an established guideline that specifies how networked data is formatted into a transmission unit. It defines the rules, syntax, and semantics for communication between network devices. Examples of network protocols include TCP/IP, HTTP, and FTP.

Question 20

You have a Mac computer that you need to connect to the Internet. The only network connection available on the computer is a Bluetooth adapter. You are in range of a wi-fi hotspot that you have access to.What,if anything can you do to connect this computer to the Internet?
A) Put the Bluetooth adapter in wi-fi mode and connect to the wi-fi hotspot
B) configure a Bluetooth DUN on the Mac to use your Bluetooth phone's Internet connection
C) create a DUN using Network and Sharing Center and connect to your Bluetooth phone
D) connect to a DSL modem using Bluetooth and use PPPoE to access the Internet

Accepted Answer

The best option in this scenario would be to configure a Bluetooth DUN (Dial-Up Networking) on the Mac to use the Internet connection from a Bluetooth-enabled phone. This would allow the Mac to use the phone's data connection to access the Internet, even though there is no direct Wi-Fi connection available. Option A is not possible as Bluetooth adapters are not capable of connecting to Wi-Fi networks. Option C is a possibility, but it requires a Bluetooth-enabled phone with a data connection, which may not be available. Option D is also not possible as DSL modems do not have Bluetooth connectivity.

Quiz 8: Modem and Other Remote Communications Devices

a high speed technology that can use ordinary telephone lines for downstream transmissions speeds up to 8 Mbps and upstream speeds up to 1 Mbps

a hardware device that permits a computer to exchange digital data with another computer via an analog telephone line or dedicated connection

a software flow control protocol that permits a receiving modem to notify the sending modem that its data buffers are full

communications that occur in discrete units in which the start of a unit is signaled by a start bit at the front,and a stop bit at the back signals the end of the unit

____________ uses digital communications over a communications line and has an aggregate data rate of 144 Kbps or 1.544 Mbps

a digital modem device designed for use with the cable TV system providing high-speed data transfer.

When connecting to an analog modem using Windows XP,which of the following is a possible port name through which you communicate to the modem?

A desktop computer with a modem is called a ________ device because it prepares data to be transmitted.

Computers store data as a series of 1s and 0s represented by the presence or absence of _________.

___________ checking is a data verification process that ensures data integrity through a system of data bit comparisons between the sending and receiving computer.

a hardware or software feature in modems that lets a receiving modem communicate to the sending modem that it needs more time to process previously sent data

What protocol does a dial-up networking connection use to access the ISP for Internet communications?

an internal,automatically running program,usually in UNIX/Linux,that serves a particular function such as routing e-mail to recipients

The _______ is a component of a modem that reads in one byte of data,adds a start and stop bit and feeds the bits to the port.

the hardware or software portion of a modem that is responsible for converting digital data into analog signals for transmission over a telephone line

You have arrived at a customer site who is having problems using a modem attached to his Linux server. The GUI is not installed on the server. Which command can you use to verify and configure the modem?

In Unix/Linux,you refer to the first modem on the computer using which of the following?

communications of continuous bursts or blocks of data controlled by a clock signal that starts each burst or block of data

an established guideline that specifies how networked data,including data sent over a telephone network,is formatted into a transmission unit

You have a Mac computer that you need to connect to the Internet. The only network connection available on the computer is a Bluetooth adapter. You are in range of a wi-fi hotspot that you have access to.What,if anything can you do to connect this computer to the Internet?