思科CCVP 642-432 认证考题

1.Drag Drop question

Drag and drop question. Drag the items to the proper locations.

2.You are using class-based weighted fair queuing (CBWFQ) to manage queues in your network. Voice quality has been inconsistent over lower speed WAN links and users have been complaining. You have decided to configure low latency queuing (LLQ) on the lower speed links to help improve voice quality in the network. Which three of the following steps should you take to implement LLQ in the network? (Choose three.)

A:Ensure voice traffic is marked with a value EF in the DSCP.

B:Assign voice control protocol traffic to its own queue with a DSCP value of AF31.

C:Assign all voice traffic to the priority queue in LLQ.

D:Assign all non time-sensitive, nonvoice traffic to a default queue with a DSCP value of 0.

E:Ensure voice traffic is given a minimum of 20% of available bandwidth through policing.

F:Ensure that all nonvoice traffic does not exceed more than 75% of available bandwidth.

 

3.You are working with a potential customer that would like to integrate its existing PBX telephone system into its IP network. The accompanying figure shows that the customer has two offices that need to be connected to the IP network so that the customer can exchange telephone calls without using the PSTN. Both PBXs use a proprietary signaling type.Which signaling type will allow you to support your customer?

A: E&M

B: CCS

C: CAS

D: T-CCS

E: FXO

F: FXS

 

4.Refer to the exhibit. What is the minimum WAN bandwidth that would be required to support three simultaneous VoIP calls in this network?

A: 19,200 bps

B: 51,600 bps

C: 79,200 bps

D: 247,200 bps

 

5.What are the three components in an MGCP environment? (Choose three.)

 

A:gateway

B:gatekeeper

C:endpoint

D:call agent

E:proxy server

 

6.What does a gateway router match to a dialed number when setting up a VoIP call?

 

A: IP route

B: destination pattern

C: call leg

D: session target

 

7.Which is the best way to achieve a scalable dial plan?

 

A: group numbers for a particular area

B: variable number of extension digits

C: single number prefixing

D: hunt groups

 

8.Refer to the graphic for IP addresses and telephone numbers. You are working with a customer that is opening a small sales office in London. You would like to be able to have the user in London be able to dial into the PBX in New York over the IP WAN. The New York PBX uses loop start, a two-wire operation, and DTMF dialing. Please choose the correct FXO port configuration for New York.

A: voice-port 1/0/0 signal loop-start operation 2-wire dial-type dtmf

B: voice-port 1/1/1 destination 2015551212 signal loop-start operation 2-wire type 1 dial-type dtmf

C: voice port 1/0/0 session target ipv4:172.16.1.1 destination 2015551212 signal loop-start operation 2-wire dial-type dtmf

 

9.Which device is used to allow an H.323 stream to transit a firewall?

 

A: gatekeeper

B: gateway

C: proxy

D: MCU

 

10.What are two basic parameters needed to setup a dial peer connected to the PSTN? (Choose two.)

 

A:voice port

B:signaling type

C:interface bandwidth

D:destination pattern