642-437試験無料問題集（257題）「Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) 認定」

出題：1

What is the function of the command crypto pki trustpoint name when you are configuring Cisco Unified Border Element for SRTP-RTP Internetworking?

A. It obtains the certificate for the router from the CA.

B. It specifies the key pair to associate with the certificate.

C. It specifies the enrollment parameters of a CA.

D. It declares the trustpoint that the router uses and enters CA-trustpoint configuration mode.

正解：D 解答を投票する

出題：2

Which command should you use when checking for phone registration status or verifying button assignments?

A. show telephony-service

B. show ephone-dn 9

C. show ephone

D. show IP phone

正解：C 解答を投票する

出題：3

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 VoIP network?

A. Null

B. 51234

C. 1234

D. 555

E. 5

F. 5551234

正解：B 解答を投票する

出題：4

When a Cisco Unified Border Element is deployed to support RSVP-based CAC, which media flow method is required?

A. RSVP-based CAC requires Cisco Unified Border Element to use media flow-through.

B. RSVP-based CAC can be supported with either media flow-through or media flow-around if the Cisco Unified Communications Manager is configured as an RSVP agent.

C. RSVP-based CAC only supports media flow-around.

D. The Cisco Unified Border Element does not have to participate in the RSVP message exchange and will pass RSVP messages through unchanged using media flow-around.

正解：A 解答を投票する

出題：5

How does a Cisco Unified Border Element support codec filtering?

A. The Cisco Unified Border Element will only support codec filtering in media flow-around mode so that endpoints can negotiate a specific codec independently.

B. The Cisco Unified Border Element can be configured to support codec filtering by adding a list of supported codecs in global configuration mode.

C. The Cisco Unified Border Element relies on the endpoint that initiates the call to determine which codes the call will use.

D. The Cisco Unified Border Element can be configured to support codec filtering by adding one or more codec types to each dial peer that is configured in the device.

正解：D 解答を投票する

出題：6

Which command will correctly map Class of Service mappings 0 through 7 to Differentiated Services Code Point 0, 10, 18, 26, 34, 46, 48, and 56, accordingly?

A. mls quos cos map 0 10 18 26 34 46 48 56

B. mls qos map 0 10 18 26 34 46 48 56

C. mls qos cos-dscp map 0 10 18 26 34 46 48 56

D. mls qos map cos-dscp 0 10 18 26 34 46 48 56

正解：D 解答を投票する

出題：7

Switch port fa0/2 has been configured to connect an IP phone with an attached PC. Given the set of commands in the example, where does the trust boundary lie?
interface fa0/2
mls qos trust cos mls qos trust device cisco-phone
switchport voice vlan 112

A. between the PC port and the LAN port on the IP phone

B. between the IP phone and the PC

C. between the access layer switch and the distribution layer switch

D. between the IP phone and the switch

正解：D 解答を投票する

出題：8

Which queuing mechanism guarantees low-latency propagation and high-bandwidth priority?

A. Custom queuing

B. Class-based weighted fair queuing

C. Low latency queuing

D. Priority queuing

正解：C 解答を投票する

出題：9

Which three connections can utilize the priority command? (Choose three.)

A. Fast Ethernet links

B. EtherChannel

C. Fibre Channel

D. serial links

E. Frame Relay links

F. ATM PVCs

正解：D,E,F 解答を投票する

出題：10

Which component in the Media Gateway Control Protocol environment is responsible for controlling the operation of the gateways?

A. gate master

B. gatekeeper

C. calling authority

D. call agent

正解：D 解答を投票する

出題：11

Which four voice and video issues are caused by the absence of QoS? (Choose four.)

A. delays

B. circuit issues

C. defective CAT cable

D. call setup failure

E. dropped calls

F. echo

G. jitter

正解：A,E,F,G 解答を投票する

出題：12

Refer to the exhibit.

A new Cisco Unified Communications Manager Express system has been deployed and the technician is trying to add the first new IP phone to the system. The phone powers up, but it does not register with the system. The technician has verified that the phone is getting the proper VLAN information from Cisco Discovery Protocol. The phone is also getting the correct IP address and TFTP server address from DHCP. The phone has been assigned to an ephone and the correct MAC address is configured. With the information provided, which two of the following does the administrator need to verify to resolve this situation? (Choose two.)

A. Verify that the Cisco Unified Communications Manager Express service is running.

B. Verify that the tftp-server path has been configured.

C. Verify that the ephone has a button assigned.

D. Verify that telephony-service has been configured.

E. Verify that the correct phone type files are in the tftp-server path.

F. Verify that the ip helper-address is correctly configured.

正解：B,E 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

Which two protocols are peer-to-peer protocols? (Choose two.)

A. SCCP

B. H.323

C. MGCP

D. SIP

正解：B,D 解答を投票する

出題：14

DRAG DROP
Drag the signaling streams to support SIP Early Offer from the left and drop them in the correct box in the graphic on the right.

正解：

Explanation:
Call Flow of a Typical sip Session

Cisco 642-437 Exam

642-437試験無料問題集「Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) 認定」