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Cyber Trans > Block 8 > Flashcards

Block 8 Flashcards

1
Q

In regards to interfacing which one has two conductors in a cable or interface share a common return path, sometimes referred to as a single ended system

A

Unbalanced Interface

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2
Q

In regards to interfacing which one should only be used between short distances

A

Unbalanced Interface

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3
Q

In regards to interfacing which one usually has two center conductors for the signal that have equal impedance to ground, sometimes surrounded by a shield

A

Balanced Interface

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4
Q

In regards to interfacing which one makes the connection less susceptible to noise, which allows the interface to support higher data rates and support greater distances between devices

A

Balanced Interface

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5
Q

One of the oldest and most commonly used standards for DTE to DCE interfacing is ________

A

RS-232C/EIA-232D

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6
Q

__-__ supports speeds up to 20,000 bits per second in full or half-duplex mode

A

RS-232

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7
Q

Normally the __-__ standard has the cable between the two devices no longer than 50 feet, but may be longer if load capacitance requirements are met.

A

RS-232

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8
Q

__-__ is an unbalanced interface that normally supports asynchronous data flow and normally uses a 25-pin connector

A

RS-232

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9
Q

The __-__ standard is setup to have the pin connector (male) used on the DTE device, while the socket connector (female) is used on the cable coming from the DCE

A

RS-232

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10
Q

What offers transmission rates of 20 Kbps at 4000 feet to 2 Mbps at 200 feet andis a balanced interface

A

RS-530

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11
Q

True/False

Is the RS-530 used for both asynchronous and synchronous interfaces?

A

True

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12
Q

This standard, developed by the ITU –T, is a high-speed interface for data transmission of 1.2 Kbps at 3000 feet to 2Mbps at 50 feet

A

V.35 Standard

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13
Q

DATA SIGNALS are sent BALANCED and CONTROL SIGNALS are sent UNBALANCED, typically at a max of 10 volts peak to peak

A

V.35 Standard

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14
Q

This standard is sort of a hybrid between balanced and unbalanced

A

V.35 Standard

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15
Q

This standard is is typically used to interface a DTE or DCE device to a high-speed digital carrier device.

A

V.35 Standard

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16
Q

What is the standard that specifies both the physical and electrical properties of twisted pair cable and connecting hardware

A

EIA/TIA-568-B

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17
Q

Which standard allows data communications up to 1 Gbps?

A

EIA/TIA-568-B

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18
Q

_______ ______ express information by discretely changing the voltage on the transmission line.

A

Digital signals

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19
Q

Which digital signal format has only ONE polarity with respect to zero volts

A

Unipolar Format

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20
Q

Which digital signal format has TWO polarities, one positive and one negative?

A

Bipolar Format

21
Q

Which digital signal format ALTERNATES the digital 1s from positive to negative polarity?

A

Alternate Mark Inversion Format

22
Q

Which digital signal format has each bit return to the 0V?

A

Return-To-Zero (RZ)

23
Q

Which digital signal format does not allow the signal level to return to 0V between successive bits or during the bits duty cycle or bit time.

A

Non-Return-To-Zero Format (NRZ)

24
Q

Which digital signal format is is an analog signal that has digital information coded on to it?

A

Quasi-analog

25
Q

In regards to Digital Timing Methods what refers to TIME and is synchronized by the use of stop-and-start bits

A

Asynchronous Timing

26
Q

___________ is slower than synchronous transmission and is not as efficient in code transmission because of the added synchronizing stop-and-start bits.

A

Asynchronous Timing

27
Q

Which Flow control is sometimes referred to as RTS (Request-to-send) / CTS (Clear-to-Send) flow control?

A

Hardware Flow control

28
Q

Which Flow control is known under the name XON-XOFF (“transmit on” and “transmit off”) flow control?

A

Software Flow control

29
Q

In ___________ timing data is transmitted in continuous streams with reference to an external clock signal.

Also, the receiving device is clocked at exactly the same rate as the transmitter.

A

Synchronous Timing

30
Q

Synchronous communication places a header in front and a trailer at the end of each frame to synchronize the data flow through the system.
The content of the header and trailer is dependent upon the protocol that is used.

A

Flow Control

31
Q

What is this in reference to?
Synchronous protocols use an error checking sequence such as Cyclic Redundancy Check (CRC) or Frame Check Sequence (FCS).

A

Error Control

32
Q

In ___________ Timing data is transmitted in continuous streams, but WITHOUT an external clock signal.

A

Isochronous Timing

FaceTime/Skype

33
Q

What is the speed at which information moves across the media

A

Signal Rate

Speed Limit

34
Q

What is the amount of time a digital signal is left at a particular voltage level to indicate a value?

A

Bit Interval/Bit Time

35
Q

What s the time it takes to send a character, including any start and stop bits?

A

Character Interval

36
Q

What is a measurement of the signaling speed of a data transmission device and is equivalent to the maximum number of signaling elements (symbols) sent per second?

A

Baud Rate

How fast it COULD go

37
Q

What is a measure of throughput or rate of data transfer and represents the number of bits that are transmitted within a second and it is measured in bits per second (bps or b/s)

A

Bit Rate

How fast the bits ARE going

38
Q

What is nothing more than counting the number of bits received in a specific time interval (usually one second)?

A

Bit Count Integrity

39
Q

Explain the Telecommunications Request (TR)

A

AF Form 3215 or electronic equivalent is filled out. Then the SCF uses that info to fill out the TR. Next it’s routed to the MAJCOM Telecommunication Certifications Office (TCO) who will certify and validate the TR. Once the certification of the TR has been completed, a Telecommunication Service Request (TSR) will be prepared in accordance with DISA

40
Q

Explain the Telecommunications Service Request (TSR)

A

The TSR is a request for service that details the type of services (NIPRNET, SIPRNET, JWICS, GCCS, DVSG, etc.), service locations, and other pertinent information required to specify parameters to the agency or commercial carrier providing the service. Once the TSR is completed, the TCO updates the information in DISA Direct. Next, the TSRs will be routed and submitted via DISA Direct to the DISA action activity/agency responsible for providing the required service and to other agencies/units as necessary.

41
Q

Explain what a Telecommunications Service Order (TSO) is

A

It’s a document prepared by DISA to authorize SCFs and other government facilities to make the circuit activations, deactivations, or changes the user requested. In the case of a new or changed circuit, DISA coordinates with the National Communications System Telecommunications Service Priorities (NCSTSP) Program Office to get provisioning and restoration priorities assigned or updated. Once all the engineering is complete and all the information is gathered, DISA produces a TSO that is distributed to all the affected SCFs and other agencies directing them to proceed

42
Q

What is a purpose of TSP?

A

To allow users of our nation’s most important telecommunications services of the National Security and Emergency Preparedness (NS/EP) system to receive treatment on a priority basis.

43
Q

In regards to TSP What is the process of providing telecommunications service to a user is called?
(PRP)

A

PROVISIONING

44
Q

In regards to TSP ____________ is the process of returning a defective circuit back to operation through either repair or alternate routing
(PRP)

A

RESTORATION

45
Q

In regards to TSP _______ involves “appropriating” a circuit of lesser importance (lower priority) to allow a higher priority user to communicate.
(PRP)

A

PREEMPT

46
Q

What two parts is the TSP broken down into?

A

TSP Control Identifier and the TSP Code

47
Q

How is the TSP Control Identifier and the TSP Code separated?

A

The tenth position is ALWAYS a hyphen, which simply serves to separate the TSP control ID and the TSP code.

48
Q

What are the acceptable values for the PROVISIONING priority field (position 11)?

A

E, 1, 2, 3, 4, 5, and 0

Cyber Trans (12 decks)

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