3D1X3 Self Test Questions Vol. 3 Unit 5

Front 1

Define SIPRNet?

Back 1

SIPRnet is a system of interconnected computer networks used by DOD to transmit classified information
(up to and including SECRET) in a completely secure environment.

Front 2

Describe the information that should be in a request for service.

Back 2

(1) Type of service required.
(2) Its purpose.
(3) Equipment location.
(4) Hours of operation.
(5) A point of contact.
(6) Any other pertinent information.

Front 3

Describe the purpose of a TSR.

Back 3

It’s a request to DISA to start, stop, or change circuits, trunks, links, or systems.

Front 4

List the information included in a TSR.

Back 4

(1) Service date.
(2) Nature of requirement.
(3) Type of action required.
(4) Funding code.
(5) Restoration priority.
(6) Contact people.
(7) Users’ locations.
(8) Details of service and user equipment.
(9) DCS interface data.
(10) Type and grade of service required.

Front 5

Describe what DISA uses TSOs for.

Back 5

To order the activation, deactivation, or change of circuits, trunks, links, or systems.

Front 6

What document authorizes operation and maintenance agencies to procure specific devices and
ancillary equipment?

Back 6

TSO.

Front 7

Are verbal TSOs allowed? If so, what are the guidelines?

Back 7

Verbal TSOs are issued when there’s insufficient time to prepare and distribute a record TSO. They are
issued as an operational direction message, when possible, and confirmed by record TSO within five
working days of issue.

Front 8

Describe the numbering system used for TSOs.

Back 8

Each TSO is assigned an alphanumeric TSO number, derived as follows: The beginning letter designates
the issuing office. The first digit designates the year the TSO is issued. The next four digits represent
sequential TSO serial numbering within the year, beginning 1 January. The next character is a diagonal (/)
to show separation. Following the diagonal are the last four characters (circuit number) of the CCSD of the
circuit or the entire six-character designator of the trunk being acted upon. The next character, a dash (–),
shows separation. Next, a two-digit number identifies the sequential action being taken on the circuit or
trunk. The number 01 always designates the first action, or start; numbers 02 through 99 show changes in
and discontinuance of the service.

Front 9

What’s the purpose of a CCSD?

Back 9

It provides identification and information about a circuit.

Front 10

Describe the numbering system used for CCSDs.

Back 10

Each CCSD has eight characters. The first character shows the military department or agency requiring the
service. The second and third characters identify the purpose or use of the circuit. The fourth character
shows the type of service provided. The fifth through eighth characters identify the individual circuit; they
may be all letters, all numbers, or a combination; for example, a temporary CCSD is composed of letters
only, while a permanent CCSD usually has a combination of letters and numbers.

Front 11

Who validates all Satellite Communication (SATCOM) network requirements?

Back 11

All Satellite Communication (SATCOM) network requirements must be documented and submitted for
validation by the Joint Staff.

Front 12

What is the official Department of Defense (DOD) centralized database containing current and
future SATCOM requirements on all satellite systems?

Back 12

The SDB is the official DOD centralized database containing current and future SATCOM requirements on
all satellite systems, to include military owned, commercial, allied, and civil.

Front 13

Where do the SATCOM connectivity requirements originate from?

Back 13

SATCOM connectivity requirements originate from users who recognize there is an unfulfilled need for
SATCOM services. Requirements can also be generated from the Services or agencies who may have
determined a need will exist based upon future changes to the force structure or doctrine.

Front 14

Differentiate current and future SATCOM connectivity categories.

Back 14

Current requirements are SATCOM connectivity needs associated with existing or soon-to-be warfighting
systems (normally within two years). Future requirements are those anticipated needs that extend beyond
the timeframe of current requirements, usually two years or more. Normally, future requirements are
submitted by Services and agencies.

Front 15

Under CJCSI 6250.01C, when do all requirements contained in the SDB get revalidated?

Back 15

CJCSI 6250.01C directs a complete revalidation of all requirements contained in the SDB every year.

Front 16

Who makes the final decision on the restoration priority of circuits?

Back 16

The NCS.

Front 17

What’s the exception to the restoration priority system numbering system?

Back 17

When no restoration priority is assigned.

Front 18

What’s the primary method of circuit restoration for outages?

Back 18

Using spare channels and equipment. This is called “rerouting.”

Front 19

List the suggested sequence for restoring circuits.

Back 19

(1) Spare channels.
(2) Channels containing on-call circuits, when the circuits aren’t active.
(3) Circuits having no assigned restoration priority code.
(4) Circuits in ascending order of restoration priority, commencing with the lowest-priority circuit.

Front 20

What’s more important, an individual circuit or a trunk?

Back 20

A trunk.

Front 21

Do trunks have restoration priority codes?

Back 21

Most trunks don’t have restoration priorities.

Front 22

What’s the function of the RSSC?

Back 22

It’s a planning cell that provides GMF access to the unified and specified commands on the DSCS.

Front 23

Which agency approves the satellite access requests (SAR) submitted by the GMFSC mission
planner?

Back 23

RSSC.

Front 24

Which agency initiates SAAs for nonstandard tactical terminals?

Back 24

DISA.

Front 25

What must be done before a GMFSC terminal can operate on a given frequency?

Back 25

It must be authorized access to the DSCS satellite by the RSSC.

Front 26

What’s the function of the GMF network controllers?

Back 26

Ensures each GMFSC terminal is operating according to the satellite access authorizations.

Front 27

List the components of the GIG QC program.

Back 27

(1) In-service performance monitoring.
(2) Out-of-service testing.
(3) Trend analysis.

Front 28

What is the benefit of an efficient QC program?

Back 28

An efficient QC program may prevent interruption to user service by detecting and correcting adverse
trends before user service is affected.

Front 29

What is the purpose of in-service performance monitoring and out-of-service testing?

Back 29

In-service performance monitoring provides performance information that indicates the quality of the
operating signal traversing the network without interruption to the signal. The purpose of out-of-service
testing is to periodically verify the quality of prescribed specifications from terminal equipment to terminal
equipment, and to make necessary end-to-end adjustments to interface and transmission equipment.

Front 30

What is trend analysis?

Back 30

Comparing the results of the periodic readings to the established standards to point out any degrading trend
in the system.

Front 31

Define CCM.

Back 31

CCMs are those measures taken to ensure the continued use of the frequency spectrum by DOD and
friendly forces.

Front 32

List some of the CCM techniques.

Back 32

Applying communications security (transmission, cryptographic, physical and emission security), using
data burst transmission, using directional and mobile antennas, using spread spectrum modulation (direct
sequence (CDMA) or frequency hopping).

Front 33

Which of the three primary functions of the Promina addresses its “dynamic bandwidth
allocation” capability?

Back 33

Economic use of bandwidth.

Front 34

Which of the four methods used by the Promina to assign bandwidth is the most efficient?

Back 34

Demand assigned bandwidth allocation.

Front 35

`What bandwidth assignment method does the Promina use to set aside bandwidth for specific
dates or times?

Back 35

Time-of-day restrictions.

Front 36

Which companding scale do European telephone networks use for analog-to-digital conversion?
Which method is used in the US?

Back 36

European: “A-law”; and US: “Mμ-Law.”

Front 37

What’s the purpose of “transcoding” in telephone networks?

Back 37

It’s used when transmitting voice/data between the US and European countries, and is equivalent to
converting metric measurements back to old English measurements, and vice-versa.

Front 38

What NCTE was specifically designed to police one’s density on a network and to aid in
performing loopbacks to the network?

Back 38

CSU.

Front 39

Name the four basic requirements for the Promina to function in a communications network.

Back 39

(1) Timing.
(2) Space.
(3) Power.
(4) A path for connectivity.

Front 40

Describe the term “logical slot” as it applies to a Promina system.

Back 40

It’s the amount of bandwidth required for the operation of a specific card or module in the Promina.

Front 41

What’s the purpose of the operator interface in a Promina system?

Back 41

It’s a menu driven software program that allows easy programming and operation of the Promina nodes.

Front 42

What advantage does the Promina 400 have when comparing it to the Promina 200?

Back 42

The common modules perform the same basic functions but with an expanded capability.

Front 43

What’s the purpose of the HSS in the Promina 800?

Back 43

It allows processing and movement of data at rates up to 256 Mbps (depending on how your node is
configured).

Front 44

What’s the purpose of the SX–2?

Back 44

It provides the clocking and switching functions for the high-speed, extension, and standard shelves in a
Promina 800 and is the interconnecting point for all the shelves in the node.

Front 45

What module functions as the communications path between the SX–2 card and the standard or
expansion shelves on the Promina 800?

Back 45

BX.

Front 46

Describe the term “load unit” and how it applies to a Promina series node.

Back 46

It’s a measurement of the processing capability of each processor module in the node. The load unit
capacity must first be calculated in order to determine the approximate number of processor modules
required to operate the node.

Front 47

List the two steps needed when you’re performing load unit calculations for a Promina node.

Back 47

(1) Determine how many of each module shown on the load unit table is on the node.
(2) Multiply that number times the load units for the module, and add the totals.

Front 48

When you’re building a node, what three critical items must you monitor to ensure a reliable
network?

Back 48

(1) The number of load units being tasked to the processors.
(2) The logical slot capacity of each shelf (not to exceed 16 logical slots per shelf).
(3) The power consumption of each module.

Front 49

What three things must you consider in order to ensure better survivability of a node?

Back 49

(1) If power or logical slots are critical on a particular shelf, rearrange modules in the node.
(2) Build redundancy in critical trunk modules or priority circuits by installing backups in spare shelves.
(3) If processor power is low, add another processor to the node.

Front 50

In a Promina system, what user equipment is also referred to as a T–1 multiplexer?

Back 50

Channel bank.

Front 51

In a Promina system, what user equipment is best described as a local business switchboard?

Back 51

Private branch exchange.

Front 52

In a Promina system, what user equipment is a commonly used as a source for network timing?

Back 52

CDS–10.

Front 53

In order for previously multiplexed user data to integrate with a Promina system, with what
format must it be compatible?

Back 53

TTL logic.

Front 54

What user equipment is a high-end statistical multiplexer that uses packet technology to establish
virtual circuits, connecting data devices in a WAN?

Back 54

SPX–50.

Front 55

How are nodes connected to each other in a Promina system?

Back 55

By using trunk modules.

Front 56

Why is SCLP so important in a node?

Back 56

It’s the sole means by which nodes communicate with each other, and it carries data that allows users to
configure, query, and monitor all nodes from anywhere in the network.

Front 57

Briefly describe the two operating modes of the TRK–3 module.

Back 57

In the span mode, the TRK–3 is connected directly to the transmission line or span. Span trunks support
proprietary and clear channel port bundles. In tandem mode, only the front TRK–3 card is used as a server
to support a span mode TRK–3 when there are more than six proprietary bundles.

Front 58

Describe the purpose of the two- and three-position switches found on most Promina front cards.

Back 58

Two-position switches are found mainly on the common cards. They allow you to physically enable or
disable the module. Three-position switches are found mainly on trunk, data, and voice cards. They allow
you to physically perform loop testing (loop in, loop out, or normal) of the modules.

Front 59

Prior to removing and replacing modules in a Promina, what must you do first (regardless of
module type)?

Back 59

Ensure the card slot is disabled.

Front 60

Why must you always be aware of any changes or modifications you do on a node?

Back 60

Because they can have profound effects on the network as a whole.

Front 61

During a communications unit deployment, at least one person deployed with a Promina system
must have what minimum access level assigned in order to first bring up the mission? Why?

Back 61

Level 4. Because the “initialize node” function requires a Level 4 operator. Anytime you start up for the
first time, or if your processors experience a hard crash, it may be necessary to perform a system
initialization.