COT test UPDATED ACTUAL Questions and CORRECT Answers
Question: The Abbreviation "AC" is short for what term? A. Aptitude Control B. Alternating Current C.
Amperage Charge D. Anchored Cable
Correct Answer: B. Alternating Current
Question: ISDN BRI is used for? A. digital phone lines B. data connections C. analog connections D. both
A&B
Correct Answer: D. both A & B
Question: A DCS in a central office.. A. provides timing B. provides dial tone C. is a physical
cross-connect D. connects two logical network points
Correct Answer: D. connects two logical network points
Question: Pictured below is the schematic symbol for a
Correct Answer: A. antenna B. battery C. plate rectifier D. multi layer capacitor: B. battery
Question: If all other factors remain the same, what is the effect of increasing wire gauge (for example,
from Awg22 to AWG26)? A. impedance will Decrease B. resistance will Increase C. capacitance will
Increase D. inductance will Decrease
Correct Answer: B. resistance will Increase
Question: A capacitor.. A. stores electrical energy B. impedes the flow of electrical current C. amplifies
electrical energy D. generates electrical energy
Correct Answer: A. stores electrical energy
Question: Which of the following readings indicate a short onan ohmmeter where the resistance is set to
Rx1000? A. 1k ahm B. infinity C. 0 ohm D. 2k ohm
Correct Answer: A. 1k ohm
Question: Testing indicates one of the curcuits onan OC12 is taking from errors. What is the first step that
must be taken to isolate the trouble? A. swap cords B. reset the T3 card C. switch path on the ring D.
verifying options on the curcuit
Correct Answer: C. switch path on the ring
Question: T1 and T3 circuits fall within what category of Telephony signals? A. anolog B. synchronous C.
asynchronous D. SONET
Correct Answer: B. synchronous
Question: When isolating trouble ona DS1 circuit, which of the following types for the test equipment
should be used? A. T-berd B. butt set C. DSL line tester D. BRI test set
Correct Answer: A. T-berd
Question: In a electrical context, the term bonding refers to... A. connecting 2 or more conductors together
B. connecting a relay track to an effective electrical ground C. establishing a path of least resistance for
electricity to flow through D. installing a ground rod
Correct Answer: C. establishing a path of least resistance for electricity to flow through
, Question: When moving printed circuit crds, which of the following should you do before touching them?
A. nothing B. use a static strap C. put on gloves D. momentarily touch gard
Correct Answer: B. use a static strap
Question: Which of the following refers to a location where a circuit is handed off to a customer? A.
demarcation point B. point of presence C. carrier facility D. point of interference "where UZ ends and
TCSR begins"
Correct Answer: A. demarcation point
Question: A T-1 is down, you cannot loop the smart Jack, but you can loop the co card. What is the
possible next step in isolating the cause of the problem? A. replace the smart Jack at the customers end B.
loop back ang doublers to further isolate the trouble C. charge the module on the frame D. reseat the control
office card
Correct Answer: B. loop back ang doublers to further isolate the trouble
Question: Which of the following are characteristics of a T-1 signal? A. 24 DSO's (phonelines) B. 1.544 m
b/s line trade C. Digital facility D. all of the above
Correct Answer: D. all of the above
Question: The circuit voltage on a working customers loop? A. 48 VDC B. -150 VDC C. 150 VDC D. -48
VDC
Correct Answer: D. -48 VDC
Question: Which circuit element drops the voltage in a circuit? A. battery B. ON/OFF switch C. load D.
ground
Correct Answer: C. load
Question: A test method used to identifying option mismatches is? A. testing head to head B. NYGUIST
test C. testing to a looped samrt jack D. testing to a hand loop
Correct Answer: A. testing head to head
Question: After removing a customers line from a network interface device (NID) there is NDT. Dial tone
has been verified leaving C.O. What should you do next? A. verifying the dial tone at the XBOX B. run
new outside wire (loop) to the terminal C. replace the NID D. replace the jumper in the cross connect
Correct Answer: A. verifying the dial tone at the XBOX
Question: In an electrical context, the term grounding refers to? A. connecting a piece of hardware to an
effective electrical ground B. installing a ground rod C. establishing a path of high resistance for electricity
D. connecting two or more conductors together
Correct Answer: B. installing a ground rod
Question: Superframe synchronuation on T-1 circuits allows for? A. inband signaling transmissions B.
"yellow (remote) alarming to the far end terminal C. "red" (local) alarming capabilities D. in service error
checking
Correct Answer: D. in service error checking
Question: How much resistance does a closed switch in a....? A. an infinite amount B. 1m ohms C. 0 ohms
D. 1k ohms
Question: The Abbreviation "AC" is short for what term? A. Aptitude Control B. Alternating Current C.
Amperage Charge D. Anchored Cable
Correct Answer: B. Alternating Current
Question: ISDN BRI is used for? A. digital phone lines B. data connections C. analog connections D. both
A&B
Correct Answer: D. both A & B
Question: A DCS in a central office.. A. provides timing B. provides dial tone C. is a physical
cross-connect D. connects two logical network points
Correct Answer: D. connects two logical network points
Question: Pictured below is the schematic symbol for a
Correct Answer: A. antenna B. battery C. plate rectifier D. multi layer capacitor: B. battery
Question: If all other factors remain the same, what is the effect of increasing wire gauge (for example,
from Awg22 to AWG26)? A. impedance will Decrease B. resistance will Increase C. capacitance will
Increase D. inductance will Decrease
Correct Answer: B. resistance will Increase
Question: A capacitor.. A. stores electrical energy B. impedes the flow of electrical current C. amplifies
electrical energy D. generates electrical energy
Correct Answer: A. stores electrical energy
Question: Which of the following readings indicate a short onan ohmmeter where the resistance is set to
Rx1000? A. 1k ahm B. infinity C. 0 ohm D. 2k ohm
Correct Answer: A. 1k ohm
Question: Testing indicates one of the curcuits onan OC12 is taking from errors. What is the first step that
must be taken to isolate the trouble? A. swap cords B. reset the T3 card C. switch path on the ring D.
verifying options on the curcuit
Correct Answer: C. switch path on the ring
Question: T1 and T3 circuits fall within what category of Telephony signals? A. anolog B. synchronous C.
asynchronous D. SONET
Correct Answer: B. synchronous
Question: When isolating trouble ona DS1 circuit, which of the following types for the test equipment
should be used? A. T-berd B. butt set C. DSL line tester D. BRI test set
Correct Answer: A. T-berd
Question: In a electrical context, the term bonding refers to... A. connecting 2 or more conductors together
B. connecting a relay track to an effective electrical ground C. establishing a path of least resistance for
electricity to flow through D. installing a ground rod
Correct Answer: C. establishing a path of least resistance for electricity to flow through
, Question: When moving printed circuit crds, which of the following should you do before touching them?
A. nothing B. use a static strap C. put on gloves D. momentarily touch gard
Correct Answer: B. use a static strap
Question: Which of the following refers to a location where a circuit is handed off to a customer? A.
demarcation point B. point of presence C. carrier facility D. point of interference "where UZ ends and
TCSR begins"
Correct Answer: A. demarcation point
Question: A T-1 is down, you cannot loop the smart Jack, but you can loop the co card. What is the
possible next step in isolating the cause of the problem? A. replace the smart Jack at the customers end B.
loop back ang doublers to further isolate the trouble C. charge the module on the frame D. reseat the control
office card
Correct Answer: B. loop back ang doublers to further isolate the trouble
Question: Which of the following are characteristics of a T-1 signal? A. 24 DSO's (phonelines) B. 1.544 m
b/s line trade C. Digital facility D. all of the above
Correct Answer: D. all of the above
Question: The circuit voltage on a working customers loop? A. 48 VDC B. -150 VDC C. 150 VDC D. -48
VDC
Correct Answer: D. -48 VDC
Question: Which circuit element drops the voltage in a circuit? A. battery B. ON/OFF switch C. load D.
ground
Correct Answer: C. load
Question: A test method used to identifying option mismatches is? A. testing head to head B. NYGUIST
test C. testing to a looped samrt jack D. testing to a hand loop
Correct Answer: A. testing head to head
Question: After removing a customers line from a network interface device (NID) there is NDT. Dial tone
has been verified leaving C.O. What should you do next? A. verifying the dial tone at the XBOX B. run
new outside wire (loop) to the terminal C. replace the NID D. replace the jumper in the cross connect
Correct Answer: A. verifying the dial tone at the XBOX
Question: In an electrical context, the term grounding refers to? A. connecting a piece of hardware to an
effective electrical ground B. installing a ground rod C. establishing a path of high resistance for electricity
D. connecting two or more conductors together
Correct Answer: B. installing a ground rod
Question: Superframe synchronuation on T-1 circuits allows for? A. inband signaling transmissions B.
"yellow (remote) alarming to the far end terminal C. "red" (local) alarming capabilities D. in service error
checking
Correct Answer: D. in service error checking
Question: How much resistance does a closed switch in a....? A. an infinite amount B. 1m ohms C. 0 ohms
D. 1k ohms
