Thursday, September 13, 2012

642-321 Study Guide / 642-321 Testing Engine / 642-321 Videos

Cisco CCNA Training, Cisco CCNA Certification
Best CCIE Training and CCIE Exams
and more Cisco exams log in to Certkingdom.com


QUESTION 1
What is the phenomenon called where different wavelengths of light travel at different speeds?

A. attenuation
B. OSNR
C. dispersion
D. light skew

Answer: C


QUESTION 2
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical
communications?

A. They are both regions of lowest loss.
B. They are both regions of low index of refraction.
C. They are both regions of low chromatic dispersion.
D. They are both regions of low reflections.
E. They are both regions of low Polarization Mode Dispersion (PMD).

Answer: A


QUESTION 3
For lasers with tightly controlled wavelengths, approximately how far apart are the centers of
adjacent wavelengths when 100 GHz spacing is used in a DWDM system?

A. 0.8 nanometers
B. 1.6 nanometers
C. 0.4 nanometers
D. 1.2 nanometers
E. 0.6 nanometers

Answer: A


QUESTION 4
Which device creates an OEO conversion?

A. fiber-optic cable
B. regenerator
C. optical receiver
D. optical switch
E. attenuator
F. amplifier
G. light emitter

Answer: B


QUESTION 5
If node 2 is accepting line timing from node 1, node 2 will send _____ to node 1 as its SSM
messge.

A. SMC
B. AMI
C. ESF
D. PRS
E. DUS
F. B8ZS

Answer: E


Cisco CCNA Training, Cisco CCNA Certification
Best CCNA Training and CCNA Certification
and more Cisco exams log in to Certkingdom.com

Sunday, September 9, 2012

Free Share Cisco 642-279 Study Guide / Testing Engine / Videos

Cisco CCNA Training, Cisco CCNA Certification

Best CCNA Training and CCNA Certification and more Cisco exams log in to Certkingdom.com


QUESTION 1
Where are the current E. 164 alias, H.323 ID, and TCU IP setting displayed?

A. the top of the operator interface in the Device Overview
B. the bottom of the operator interface
C. the top of the administrator interface
D. the bottom of the administrator interface

Answer: A


QUESTION 2
What is the correct sequence to upgrade the Cisco Telepresence Server?

A. Navigate to the Configuration tab. Click Upload software imago
B. Navigate to the Configuration tab. Click Browse, and choose the software image. Click Upload
software image.
C. Use a client like WinSCP to upload the new software image on the Cisco Telepresence Server
and reboot the server.
D. Navigate to the Configuration tab and choose Upgrade Software. Reboot the server The Cisco
Telepresence Server automatically uploads the latest software image.

Answer: B


QUESTION 3
Which of the following is a real part of a standard shipment of a Cisco Telepresence T3 system?

A. three boxes with T1 displays
B. three boxes with TCU, table monitors
C. one box with table tops
D. two boxes with overhead lighting

Answer: B


QUESTION 4
Which method can you use to remotely issue commands to the TCU?

A. an SSH client such as PuTTY
B. an SCP client such as WinSCP
C. a Telnet client
D. any web browser that supports HTTPS

Answer: A


QUESTION 5
WhichCisco Telepresence Server diagnostic tool shows the most recent shutdown and upgrade
events?

A. activated feature status
B. system status
C. system log
D. conference status

Answer: B


Cisco CCNA Training, Cisco CCNA Certification

Best CCIE Training and CCIE Exams and more Cisco exams log in to Certkingdom.com

Wednesday, September 5, 2012

Free Download 642-278 Q and A and Study Guide

Cisco CCNA Training, Cisco CCNA Certification
Best CCNA Training and CCNA Certification
and more Cisco exams log in to Certkingdom.com


QUESTION 1

Refer to the exhibit. The user of IP phone A has opened a trouble ticket that he cannot call IP
phone B. where is the best place for troubleshooting this issue.

A. IP phone B
B. The Cisco Unified Communication Manager system in the site A
C. IP phone A
D. IP phone A user
E. The local VoIP voice gateway of IP phone B
F. IP phone B user

Answer: E

Explanation:


QUESTION 2
How many TFTP servers should be in a Cisco Unified Communications Manager cluster?

A. 1
B. 2
C. 4
D. 8

Answer: A

Explanation:


QUESTION 3
Cisco Unified Communications Manager redundancy for a Cisco TelePresence endpoint is
achieved which two of the following? (Choose two)

A. Configure a Cisco Unified Communications Manager group with two Cisco Unified
Communications manager servers in the preferred order.
B. Configure a Cisco Unified Communications Manager group with three Cisco Unified
Communications manager servers in the preferred order.
C. Configure a Cisco Unified Communications Manager group with three Cisco Unified
Communications manager server because redundancy is not supported for Cisco TelePresence
endpoints.
D. Configure a Cisco Unified Communications Manager group with three Cisco Unified
Communications manager servers and the calls will be load-balanced between the two Cisco
Unified Communications Manager servers in the group.

Answer: A,B

Explanation:


QUESTION 4
Video bandwidth limits can be set for Cisco TelePresence System endpoints at which two places?
(Choose two)

A. Region
B. Calling search space
C. Device pool
D. Location
E. Physical location

Answer: A,D

Explanation:


QUESTION 5
Which of the following statements is correct when deploying Cisco TelePresence in a centralized
call-processing scenario?

A. Use Cisco unified SRST to provide for local survivability for the Cisco TelePresence endpoints
in the event of a WAN outage and use AAR to provide an alternative path for Cisco TelePresence
calls in the event that there is insufficient bandwidth on the WAN.
B. Cisco TelePresence endpoints do not support SRST. The best solution is to build a redundant
WAN.
C. AAR should be used to reroute Cisco TelePresence calls over a Cisco TelePresence
intercompany service provider in the event that the primary enterprise WAN path is unavailable.
D. Every site in a centralized call-processing deployment must contain a Cisco Unified
Communications Manager node for the Cisco TelePresence endpoints to register to.

Answer: B

Explanation:


QUESTION 6
When implementation Call Admission Control in a centralized call-processing system, which
parameter is used in Cisco Unified Communications Manager is to govern the aggregate
bandwidth usage of the devices?

A. Route group
B. Location
C. Region
D. Hunt group
E. Partition

Answer: C

Explanation:


Cisco CCNA Training, Cisco CCNA Certification
Best CCIE Training and CCIE Exams
and more Cisco exams log in to Certkingdom.com