[Free] Download Latest (May 2016) Cisco 642-742 Real Exam 51-60

Ensurepass

QUESTION 51

Refer to the exhibit. A network engineer is troubleshooting wireless voice issues on a network using EAP-FAST with PAC provisioning. Authentication is working properly on laptops but is failing on phones. What configuration change is needed?

 

clip_image002

 

A.

Identity Request Timeout to 60

B.

Identity Request Timeout to 10

C.

Request Timeout to 5

D.

Request Timeout to 30

E.

EAPOL-Key Max Retries to 1

F.

EAPOL-Key Max Retries to 5

 

Correct Answer: D

 

 

QUESTION 52

A network engineer is troubleshooting a VoWLAN deployment with VoFi Analyzer and sees a WiMOS score of 2.9. How would the tool describe this value?

 

A.

Unacceptable

B.

Many dissatisfied

C.

Some dissatisfied

D.

All satisfied

 

Correct Answer: B

 

 

QUESTION 53

Users are experiencing poor audio quality when calling from their 7925 series VoIP Phones. Call quality is exceptional from wired to wired phones, but not from wired to wireless phones. The wired network has QoS deployed properly and the SSID is configured with Platinum QoS. What should be verified to troubleshoot the issue?

 

A.

The controller is marking the 802.1p tag of 3, the AP switchport has been configured to trust DSCP, and the controller’s switchport to trust CoS.

B.

The controller is marking the 802.1p tag of 4, the AP switchport has been configured to trust CoS, and the controller’s switchport to trust DSCP.

C.

The controller is marking the 802.1p tag of 5, the AP switchport has been configured to trust DSCP, and the controller’s switchport to trust CoS.

D.

The controller is marking the 802.1p tag of 6, the AP switchport has been configured to trust CoS, and the controller’s switchport to trust DSCP.

 

Correct Answer: C

 

 

QUESTION 54

What is the main difference between the Cisco Unified Wireless IP Phones 7921G and 7925G?

 

A.

The 7925G supports 802.11a/b/g, whereas the 7921G supports only 802.11b/g.

B.

The 7925G is suited for a more rugged environment.

C.

The 7925G has support for 802.11n, whereas the 7921G does not.

D.

7925G supports WPA2, whereas the 7921G supports only WPA1.

 

Correct Answer: B

 

 

QUESTION 55

Using proper VoWLAN design practice, what would be the Cisco recommended total number of calls for a properly designed 802.11a cell to ensure call quality?

 

A.

4

B.

7

C.

14

D.

20

E.

25

F.

27

 

Correct Answer: D

 

 

QUESTION 56

Using proper VoWLAN design practice, what would be a reasonable total number of calls for a properly designed 802.11a cell to ensure call quality?

 

A.

4

B.

7

C.

14

D.

20

E.

25

F.

27

 

Correct Answer: D

 

 

QUESTION 57

A single Layer 2 multicast address can map to how many IPv4 multicast addresses?

 

A.

1

B.

8

< p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-autospace: ; mso-layout-grid-align: none" align="left">C.

16

D.

28

E.

32

F.

64

 

Correct Answer: E

 

 

QUESTION 58

What are the two equivalent 802.1p CoS categories that are associated with 802.11e AC_BE? (Choose two.)

 

A.

0

B.

1

C.

2

D.

3

E.

4

F.

5

 

Correct Answer: AD

 

 

QUESTION 59

Which four statements describe attributes of interactive video? (Choose four.)

&nbsp
;

A.

Packet loss is limited to 1 percent.

B.

Packet loss is limited to 5 percent.

C.

One-way latency is limited to 150 ms.

D.

One-way latency is limited to a few seconds.

E.

Jitter is limited to 30 ms.

F.

Jitter has no significant requirements.

G.

QoS marking is at CS4.

H.

QoS marking is at AF41.

 

Correct Answer: ACEH

 

 

 

QUESTION 60

A wired packet that is marked for QoS priority CS4 arrives on VLAN-4 at Cisco WLC v7.0, with a destination of a WLAN SSID-4. The Cisco WLC is configured for the wired and wireless QoS level of Silver. The infrastructure routers and switches have incorrect QoS configurations. They have mismarked the CAPWAP outer header to a QoS priority EF. Which statement is true about how the packet is sent from the AP to the final WMM wireless client?

 

A.

The AP sends the packet with an 802.11 priority tag of 0 (Best Effort).

B.

The AP sends the packet with an 802.11 priority tag of 3 (Silver).

C.

The AP sends the packet with an 802.11 priority tag of 5 (Gold).

D.

The AP sends the packet with an 802.11 priority tag of 6 (Platinum).

 

Correct Answer: B

 

Free VCE & PDF File for Cisco 642-742 Real Exam

Instant Access to Free VCE Files: CCNA | CCNP | CCIE …
Instant Access to Free PDF Files: CCNA | CCNP | CCIE …