Ensurepass

QUESTION 21

Your PSTN carrier sends digits to your T1 PRI circuit in a digit-by-digit format. How must the T1 PRI circuit be configured to support this capability?

 

A.      The T1 PRI controller supports either en-bloc or digit-by-digit formats natively.

B.      The serial interface that is associated with the T1 controller needs to include the isdn incoming-voice command.

C.      The T1 controller needs to include the isdn overlap-receiving command.

D.      The serial interface that is associated with the T1/E1 controller needs to include the isdn overlap-receiving command.

 

Answer: D

 

 

QUESTION 22

Refer to the exhibit. Callers dial 0 to reach an outside line. When they try to place calls to directory services (322) or services (422), they hear the reorder tone. What needs to be edited in the dial peer to allow these calls to complete successfully?

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A.      The destination pattern is incorrect. It needs to start with a 9.

B.      A “prefix 1” statement needs to be added to the dial-peer configuration.

C.      The forward-digits all command needs to be applied to the dial peer.

D.      The destination pattern needs to be edited so that the first digit that is matched is a 0.

E.       The destination pattern needs to be edited so that the first digit that is matched is a 0 and the forward-digits all command needs to be added to the dial peer.

F.       The destination pattern needs to be edited so that the first digit that is matched is a 1 and the forward-digits all command needs to be added to the dial peer.

G.      The destination pattern needs to be edited so that the first digit that is matched is a 0 and the forward-digits 3 command needs to be added to the dial peer.

 

Answer: G

 

 

QUESTION 23

What is the reason that an outgoing call succeeds when there is no COR list that is applied to the incoming dial peer and a COR list is applied to the outgoing dial peer?

 

A.      The COR list for incoming calls on the incoming dial peer is a superset of COR lists for outgoing calls on the outgoing dial peer.

B.      COR lists for incoming calls on the incoming dial peer are not a superset of COR lists for outgoing calls on the outgoing dial peer.

C.      The outgoing dial peer, by default, has the lowest priority.

D.      The incoming dial peer, by default, has the highest COR priority when no COR is applied.

 

Answer: D

 

 

QUESTION 24

What is the reason that an outgoing call succeeds when COR is applied to the incoming dial peer, but no COR is applied to the outgoing dial peer?

 

A.      The COR list for incoming calls on the incoming dial peer is a superset of COR lists for outgoing calls on the outgoing dial peer.

B.      COR lists for incoming calls on the incoming dial peer are not a superset of COR lists for outgoing calls on the outgoing dial peer.

C.      The outgoing dial peer, by default, has the lowest priority.

D.      The incoming dial peer, by default, has the highest COR priority when no COR is applied.

 

Answer: C

 

 

QUESTION 25

Calls are failing to egress the local PSTN gateway that uses an E1 PRI circuit. Which debug command would be most useful in determining which dialed digits are being sent to the PSTN?

 

A.      debug voice dial-peer

B.      debug isdn q921

C.      debug isdn q931

D.      ccapi inout

 

Answer: C

 

 

QUESTION 26

Refer to the exhibit. When 5551234 is being matched with the outgoing dial peer that is shown in the exhibit, which of the following called numbers will be sent to the PSTN?

clip_image004

A.      5551234

B.      1234

C.      555

D.      Null

E.       5

F.       51234

 

Answer: F

 

 

QUESTION 27

Which command correctly enables a trust of the existing differentiated services code point value coming into a switch?

 

A.      switch(config-mls)#mls qos trust dscp

B.      switch(config-if)#mls qos trust dscp

C.      switch(config-if)#mls dscp trust

D.      switch(config-mls)#dscp trust

 

Answer: B

 

 

QUESTION 28

Refer to the exhibit. When an inbound PSTN call to 4087071222 is received by the router that is shown in the exhibit, what is the resulting called number?

clip_image006

A.      14087071222

B.      11222

C.      14081222

D.      1222

E.       4087071222

 

Answer: D

 

 

QUESTION 29

Refer to the exhibit. What happens when users at Site B place calls to Site A when the IP WAN is operational?

clip_image008

A.      The calls will always take the IP WAN route.

B.      The calls will always take the PSTN route.

C.      The calls will fail because the destination patterns are identical.

D.      The calls will use round-robin scheduling between the IP WAN and PSTN paths.

E.       The calls will use the IP WAN route unless there is a failure or congestion during which the calls will reroute via the PSTN.

 

Answer: D

 

 

QUESTION 30

Refer to the exhibit. When an inbound PSTN call from 4087071222 arrives at the ISDN port that is shown in the exhibit, which dial peer will be matched for the inbound leg?

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A.      Dial-peer 123, because incoming called-number takes precedence over answer-address.

B.      Dial-peer 2123, because answer-address takes precedence over incoming called-number.

C.      The matching inbound dial peer will be selected at random.

D.      Although dial-peer 123 takes precedence, there is no direct-inward-dial that is configured, therefore 2123 will be selected.

E.       Although dial-peer 123 takes precedence, there is no port that is configured under dial-peer 123, therefore dial-peer 2123 will be selected.

 

Answer: B

 

 

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