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2nd year > Lesson 1: Telephone Definitions > Flashcards

Lesson 1: Telephone Definitions Flashcards

1
Q

A series of digits or characters that must be entered into a system, such as a telephone or other communication terminal to gain access, is known as:

a. codec
b. hunting
c. tandem trunking
d. access code

A

d. access code

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2
Q

A location identifier enabling messages to be sent and received to a particular person or station is known as:

a. address signaling
b. regional center
c. address
d. world zone 1

A

c. address

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3
Q

A method of signaling where the amplitude or frequency of the electrical signal is analogous to the source, is know as:

a. analog transmission
b. digital transmission
c. asynchronous transmission
d. synchronous

A

a. analog transmission

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4
Q

A wiring board used in microcomputers and minicomputers to provide connections between logic, memory, and input/output modules is known as:

a. card
b. backplane
c. switch
d. hub

A

b. backplane

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5
Q

The difference in Hertz (Hz) between the highest and lowest frequency of a group or band of frequencies is known as:

a. hertz
b. out-of-band frequency
c. in-band frequency
d. bandwidth

A

d. bandwidth

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6
Q

Refers to the capability of fully charged battery cells to carry the power load of a system when commercial power fails and the primary power source is inoperative is know as:

a. harmonic filters
b. battery backup
c. surge protecting devices (SPD’s)
d. voltage regulators

A

b. battery backup

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7
Q

A data communications transmission rate based ont he number of signal level changes per second, regardless of the information content of those signals, is known as:

a. bits per second
b. flat rate
c. baud rate

A

c. baud rate

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8
Q

A unit of information in binary (number base 2) which represents one of two states of information, either a 1 or 0, as opposed to a decimal figure, is referred to as a(n) ___?___.

A

bit

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9
Q

A storage device within a computer system that compensates for a difference in the rate of data flow when transmitting data from one device to another, is known as:

a. backplane
b. clocking
c. CPU
d. buffer

A

d. buffer

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10
Q

A(n) ___?___ is usually 8-bits and represents a single character.

A

Byte

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11
Q

A printed circuit board with a special connector edge that allows the board to be plugged into a slot on a backplane, is called a(n) ___?___.

A

card

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12
Q

Subscribers to ___?___ that are behind the same system can all call each other as if they were extensions, allowing for the transferring of calls.

A

centric services

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13
Q

What does COS stand for?

A

Class of service

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14
Q

What is the factor by which LEC’s determine responsibility for repair and maintenance?

A

Domarcation Point

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15
Q

What does DTMF stand for?

A

Dual Tone Multi-Frequency

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16
Q

Are mixed signals an advantage or disadvantage with digital transmissions?

A

Advantage

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17
Q

A key system that replaces electromechanical relay controls with electronic devices; four or six conductors per telephone replace bulky multiple cables, is known as:

a. PBX
b. FAX
c. EKTS
d. KEYS

A

c. EKTS

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18
Q

An independent federal agency responsible for regulating interstate and foreign, but not intrastate, telecommunications is known as ___?___.

A

FCC

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19
Q

A trunk connecting a subscriber’s telephone equipment to a central office other than the local central office, is:

a. tie trunk
b. interoffice trunk
c. one-way trunk
d. foreign exchange trunk

A

d. foreign exchange trunk

20
Q

The term for a time period enclosing a character, a character group, or bit group involved in a digital carrier system, is a:

a. frame
b. bit
c. byte
d. packet

A

a. frame

21
Q

The number of cycles completed per unit of time, measured in Hertz, is:

a. hertz (Hz)
b. frequency
c. kilohertz
d. analog signal

A

b. frequency

22
Q

What is a type of signaling in telephone switching systems that uses direct current in a ground return path to indicate a subscriber’s request of serice?

A

Ground start

23
Q

A guideline platform for upgrading global telephone communications to a completely digital switched network, simultaneous transmission of voice and data over multiplexed communications circuits, is:

a. digital transmission
b. analog transmission
c. T-1 line
d. Integrated Services Digital Network (ISDN)

A

d. Integrated Services Digital Network (ISDN)

24
Q

The connection between the public switched network and customer premises equipment and/or a generic term for firms that sell, install and service subscriber equipment, is known as ___?___.

A

Interconnect companies

25
Q

To momentarily depress and release a telephone hookswitch in order to signal a request for a feature such as conference or transfer, is known as ___?___.

A

Hook flash

26
Q

A switch located within a telephone set alerts the switching equipment that a caller has initiated a call or that the caller has finished and the parties have disconnected. It operates when the user removes the handset from the phone (off-hook) or returns the handset to the phone (on-hook), is known as:

a. hookswitch
b. packet switching
c. switching office
d. local exchange

A

a. hookswitch

27
Q

A cabinet which contains the control modules associated with the key telephone systems; usually electromechanical relay units or electrical printed circuit cards.

a. Key Telephone System (KTS)
b. Electronic Key Telephone System (EKTS)
c. Key Service Unit (KSU)
d. Key System Unit (KSU)

A

c. Key Service Unit (KSU)

28
Q

One of the local telephone exchange areas which serves to distinguish local phone service from long-distance service is:

a. InterLATA
b. IntraLATA
c. Local Area Network (LAN)
d. Local Access and Transport Area (LATA)

A

d. Local Access and Transport Area (LATA)

29
Q

Carriers who provide telephone service within their franchised area are known as LEC’s. What does LEC stand for?

A

Local Exchange Carrier

30
Q

A junction box on the side of a house where TIP and Ring connect to the outside network is known as __?__.

A

Network Interface Device (NID)

31
Q

A device that combines two or more signals for transmission over the same path, is known as:

a. multiplexer unit (MUX)
b. mutiplex
c. multi-frequency (MF)
d. sampling

A

a. multiplexer unit (MUX)

32
Q

In data communication, a bit added to the group of bits so that the number of 1’s in a group is always even or odd. Used on a byte by byte basis to verify the integrity of data transmission. The receiving end of the transmission must be prepared for the same type of ___ (odd/even) that is being sent.

a. bit
b. parity
c. packet
d. binary digit

A

b. parity

33
Q

A unit used for temporary storage of data; a storage element which may be written into or read out from any memory address, or at any point in time, is known as:

a. CPU
b. Main frame
c. Minicomputer
d. RAM (Random Access Memory)

A

d. RAM (Random Access Memory)

34
Q

A special program built into a system to control the hardware and software resources and to supervise the running of other programs, is known as:

a. transmission system
b. operating system
c. signaling system
d. direct inward system access

A

b. operating system

35
Q

A structure which is mounted in the entrance facility and/or equipment room to guard against damage to the CO equipment from outside sources such as power surge or lightning, is known as:

A

Protectors

36
Q

This provides centralized telecommunications services to tenants in a building or complex. It also exists in large shopping centers, high rise business offices, colleges, and some apartment and condo complexes, is known as:

A

Shared Tenant Service

37
Q

An application of ISDN which, by combining two or more B channels, allows improved motion for video, is known as:

A

Video conferencing

38
Q

The point of access into a communications system, computer, network, or other electronic device, is known as:

a. card
b. slot
c. terminal
d. port

A

d. port

39
Q

An individual person or company who has a telephone number in their name is known as __?__

A

Subscriber

40
Q

__?__ is a service where a subscriber can initiate interexchange communications over a dedicated __?__ trunk to any other subscriber in the national network geographically located within the distance selected by the caller. The customer is not billed per call, but by a certain amount per month for a given number of hours of service, with overtime charges at a reduced rate.

A

Wide Area Telecommunication Services (WATS)

41
Q

The part of the telephone microphone which converts sound waves of the speakers into electrical energy, is known as the __?__.

A

Transmitter

42
Q

The part of the telephone which converts the electrical energy back to voice, is known as the __?__.

A

Receiver

43
Q

A type of transmission facility that uses radio frequencies between 1,000 to 20,000 megahertz. Extensively used for TV transmission and by some long distance carriers such as AT&T , is known as:

A

Microwave

44
Q

Name three types of protectors.

A

fuse, air gap, rare gas

45
Q

A method of organizing speech samples into a single communication path by interleaving them into time slots is known as:

A

Time division multiplexing

2nd year (46 decks)

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