QUESTION NO: 36 With regard to MGCP, what is a call?

A. It is the path between two telephones.

B. It is the RTP sessions between the endpoints.

C. It is a connection between an endpoint and the call agent.

D. It is two or more endpoints sharing the same Call ID and the same media stream.

Answer: D

QUESTION NO: 37 Which of the following are CS-ACELP coding schemes? (Choose two)

A. G.711

B. G.728

C. G.729

D. Q.931

E. G-729A

Answer: C, E

QUESTION NO: 38 To which layer of the OSI model does Q.921 signaling equates to in ISDN?

A. Session

B. Network

C. Transport

D. Data-Link

E. Application

Answer: D

QUESTION NO: 39 You are the network engineer at TestKing. The TestKing ISDN network has two PBX systems from different manufactures.

Which protocol allows functionality between these two PBX systems?

A. QSIG

B. Q.921

C. Q.931

D. T-CCS

Answer: A

QUESTION NO: 40 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know which application conveys fax using T.37 fax relay.What will your reply be?

A. IVR

B. TCL

C. TIFF

D. SNMP

E. SMTP

Answer: E

QUESTION NO: 41 What type of multiplexing is packet switching an example of?

A. Statistical

B. Time division

C. Phase division

D. Frequency division

Answer: A

QUESTION NO: 42 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know which signal types are used by E&M.

What will your reply be?

A. wink start, delay start, and loop start

B. wink start, loop start, and immediate start

C. wink start, delay start, and immediate start

D. delay start, and loop start, and immediate start

Answer: C

QUESTION NO: 43 Which application allows you to communicate to multiple remote offices simultaneously?

A. IP Phone

B. IP Centrex

C. Toll Bypass

D. Multi-tenant

E. Hoot and Holler

Answer: E

QUESTION NO: 44 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know what the attributes of a scalable dialing plan are.

What will your reply be? (Choose four)

A. Logic distribution

B. Hierarchical design

C. Simplicity in provisioning

D. Reduction in pre-dial delay

E. reduction in post-dial delay

Answer: A, B, C, E

QUESTION NO: 45 What happens if no incoming dial peer matches a router or gateway?

A. The incoming call leg takes an alternate path.

B. The incoming call leg matches the default dial peer.

C. The incoming call leg sends a busy to the originator.

D. The incoming call leg is denied and the call is dropped.

Answer: B

QUESTION NO: 46 What is the recommended configuration for the transmit interface in switchwide queuing?

A. CoS

B. PFC

C. FIFO

D. TIFF

E. 2Q1T

Answer: E

QUESTION NO: 47 Which of the following QoS measures affect the outbound queue when implemented?

(Choose three.)

A. LLQ

B. RSQ

C. WFQ

D. FIFO

E. FRF.12

F. CBWFQ

Answer: A, C, F

QUESTION NO: 48 On what is traffic engineering for voice based?

A. Peak of service.

B. Class of service.

C. Grade of service.

D. Speed of service.

E. Quality of service.

Answer: C

QUESTION NO: 49 You are the Voice technician at TestKing. The TestKing network uses VoIP. Your newly appointed TestKing trainee wants to know what the modes of the playout delay buffer are.

What will your reply be?

A. Percent and Unit.

B. Nominal and Full.

C. Dynamic and Static.

D. Smooth and Serrated.

E. Minimum and Maximum.

Answer: C QUESTION NO: 50 You are the network engineer at TestKing. TestKing has its headquarters in New York and a branch office in Delaware. In the branch office, one VoIP dial-peer has been configured to point to headquarters over a low speed serial link. You want to limit the maximum number of concurrent calls to 3.

Which command would you use?

A. interface serial 3/3 ip rsvp bandwidth 3

B. interface serial 3/3 max-con 3

C. dial-peer voice 1000 voipmax-conn 3

D. dial-peer voice 1000 voip max-concurrent 3

E. dial-peer voice 1000 voipip rsvp neighbor 3

Answer: C

QUESTION NO: 51 In a campus network, which of the following are categories for QoS?

A. Separation of queues, queue scheduling, and pruning of queues

B. Pruning of queues, and marking control and management traffic

C. Queue scheduling, pruning of queues and marking control and management traffic

D. Separation of queues, queue scheduling, and marking control and management traffic

Answer: D

QUESTION NO: 52 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know when glare occurs.

What will your reply be?

A. When echo cancellers fail to synchronize.

B. When two phones go off-hook at the same time.

C. When two optical wavelengths collide in the same fiber.

D. When both ends of a telephone line or trunk experience echo.

E. When both ends of a telephone line or trunk are seized by different users.

Answer: E

QUESTION NO: 53 What will happen when a network link is oversubscribed?

A. The link goes down.

B. All voice calls suffer.

C. Voice packets are fragmented.

D. Excess voice calls are dropped.

E. Data packets are given priority.

Answer: B

QUESTION NO: 54 Your newly appointed TestKing trainee wants to know what CAC applies to.

What will your reply be?

A. Latency

B. Data traffic

C. Voice traffic

D. TCP networks

E. Voice and data traffic

Answer: C

QUESTION NO: 55 You are the network engineer at TestKing. Your newly appointed TestKing trainee wants to know under which standard the fragmentation for VoIP over Frame Relay is defined. What will your reply be?

A. FRF.5

B. FRF.6

C. FRF.9

D. FRF.11

E. FRF.12

Answer: E

QUESTION NO: 56 You are the network engineer at TestKing. TestKing is using LLQ on the serial interface 3/3 on the TestKing router. You want to verify the status if LLQ on the interface.

Which command would you use?

A. show class 11q

B. show interface serial 3/3

C. show queue interface serial 3/3

D. show interface serial 3/3 class 11q

E. show policy-map interface serial 3/3

Answer: E

QUESTION NO: 57 You are the network engineer at TestKing. You are implementing Frame Relay traffic shaping on the TestKing network. Your newly appointed TestKing trainee wants to know why Frame Relay traffic shaping is important.

What will your reply be?

A. It ensures that excess traffic above the CIR on the link is dropped.

B. It ensures that voice packets are not trapped behind large data packets.

C. It ensures that the priority of the voice packet is higher than the data packets.

D. It ensures that the RTP headed is reduced in size to reduce the overall size of the voice packet.

E. It ensures that excess traffic above the CIR on the link is not dropped, but is buffered and sent when there is capacity on the link.

Answer: E

QUESTION NO: 58 You are the network engineer at TestKing. TestKing has its headquarters in New York and a branch office in Delaware. The branch office is using a 128 kbps Frame Relay link to connect to headquarters. You want to ensure good voice quality on this link.

Which two QoS mechanisms should you implement on the Frame Relay interface? (Choose two.)

A. CIR

B. LLQ

C. WFQ

D. WRED

E. Fragmentation

Answer: B, E

QUESTION NO: 59 What component can be used to compensate for jitter?

A. FIFO queuing

B. Ethernet hubs

C. DSP algorithms

D. Playout delay buffer

E. Transmission medium

Answer: D

QUESTION NO: 60 In accordance with the G.114 standard, which of the following delay ranges is acceptable?

A. 0 – 150 ms

B. 0 – 250 ms

C. 0 – 300 ms

D. 0 – 400 ms

E. 0 – 500 ms

Answer: A

QUESTION NO: 61 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know what factors affects audio quality.

What will your reply be?

A. Echo and delay variation

B. Infidelity and delay variation

C. Echo and playout delay buffer

D. Infidelity and transmission medium

Answer: A

QUESTION NO: 62 What could happen if the playout delay buffer size is configured too large?

A. The overall echo on the connection may rise to unacceptable levels.

B. The overall delay on the connection may rise to unacceptable levels.

C. The overall stress on the connection may rise to unacceptable levels.

D. The overall volume on the connection may rise to unacceptable levels.

Answer: B

QUESTION NO: 63 You are the network technician at TestKing. Your newly appointed TestKing trainee wants to know what TCP
’
s reliable deliver service provides.

What will your reply be?

A. Connectionless service, flow control, sequenced delivery, and automatic error recovery

B. Flow control, sequenced delivery, automatic error recovery, and transmission window management

C. Unregulated send rate, automatic error recovery, and transmission window management

D. Connectionless service, unregulated send rate, automatic error recovery, and transmission window management

Answer: B

QUESTION NO: 64 You are the Voice technician at TestKing, Inc. You want to deploy an IP telephony solution for the company. The TestKing network is currently a traditional LAN/WAN based on Frame Relay.

Your CEO has read about the issues of converging both data and voice traffic onto a single network. She is concerned about the quality of their calls that need to cross the WAN in particularly.

What would you need to implement to ensure QoS for VoIP over Frame Relay?

A. Traffic shaping, priority queuing, Call Admission Control, and Class Based Weighted Fair Queuing

B. Traffic shaping, priority queuing, Call Admission Control, and Weighted Random Early Detection

C. Fragmentation, traffic shaping, priority queuing, Low Latency Queuing, and link efficiency with cRTP.

D. Fragmentation, traffic shaping, priority queuing, Call Admission Control, and Weighted Random Early Detection

Answer: C

QUESTION NO: 65 You are the network engineer at TestKing. TestKing has its headquarters in New York and branch offices in Delaware, Detroit and Denver. You have deployed VoIP over the TestKing WAN. TestKing user at headquarters complain that early in the day, the quality of calls between headquarters and the branch offices is very good, but as the day progresses and more calls are placed to the branch offices, the quality degrades.

The TestKing network is using RSVP. The WAN bandwidth to the branch offices allows 4 calls to the Delaware office, 6 calls to the Detroit office, and 8 calls to the Denver office. You want to verify the configuration of Call Admission Control on the headquarters router.

What command should you use?

A. show call cac conf

B. show call rsvp-sync logs

C. show call rsvp-sync conf

D. show call rsvp-sync stats

E. show call rsvp-sync events

Answer: C

QUESTION NO: 66 Which of the following is the worst-case compression delay for CD-ACELP?

A. 2.5 ms

B. 5 ms

C. 7.5ms

D. 10 ms

E. 20 ms

Answer: E

QUESTION NO: 67 What type of connection is considered a call leg?

A. A digital connection

B. A virtual connection

C. A logical connection

D. A physical connection

E. A hardwired connection

Answer: C

QUESTION NO: 68 You are the network engineer at TestKing. TestKing has its headquarters in New York and a branch office in Delaware. Users at headquarters must be able to call users at the branch office and users at the branch office must be able to call headquarters.

How many dial peers must you configure to meet these requirements?

A. 1

B. 2

C. 3

D. 4

E. none

Answer: D

QUESTION NO: 69 You are the network engineer at TestKing. TestKing has an IP network. Your newly appointed TestKing trainee wants to know which issues would adversely affect voice quality on the TestKing network.

What will your reply be?

A. Jitter, delay, and packet loss

B. Jitter, prioritization, and acknowledgment

C. Prioritization, delay, and delivery guarantee

D. Packet loss, acknowledgment, and delivery guarantee

Answer: A QUESTION NO: 70 What is the biggest issue affecting voice transport when you implement IPSec VPNs in a converged network?

A. Hop count.

B. Using G.729 as the codec.

C. Throughput considerations.

D. Ensuring only software encryption is running.

Answer: C

QUESTION NO: 71 What factors must be considered in the overall design when implementing an IPSec VPN for transport of voice?

A. Port numbers and added delay.

B. Added delay and added overhead.

C. Port numbers and longer dial plan.

D. Port numbers and added overhead.

E. Added overhead and longer dial plan.

Answer: D

QUESTION NO: 72 You are the network technician at TestKing. VoIP is implemented on the TestKing network. Your newly appointed TestKing trainee wants to know what this implementation uses to carry the payload across the network.

What will your reply be?

A. Only RTP

B. Only UDP

C. UDP inside RTP

D. RTP inside UDP

Answer: D

QUESTION NO: 73 What does the PBX use to determine the destination of a call?

A. An ISDN ANI packet

B. A blocked/permitted call list

C. An analysis of the dialled digits

D. Historic requests from the specific phone extension

Answer: C

QUESTION NO: 74 You are the network technician at TestKing. VoIP is implemented on the TestKing network. Your newly appointed TestKing trainee wants to know what is used to carry VoIP voice packets on this network.

What will your reply be?

A. ICMP/IP

B. RTP/TCP

C. RTP/UDP

D. STP/UDP

E. RTP/RCMP

Answer: C

QUESTION NO: 75 Which lower layer protocol does the Real-Time Protocol (RTP) use?

A. TCP

B. UDP

C. WDP

D. HTTP

E. RTCP

Answer: B

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