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Question 1.
Which media protocol is commonly used for Voice over IP (VoIP) solutions?
A. IMP
B. RTMP
C. MGCP
D. ICMP
Answer: C
Question 2.
Which International Telecommunication Union (ITU) standard defines a set of specifications for multimedia communications over local area networks (LANs) that do not provide a guaranteed Quality of Service (QoS)?
A. G.711
B. H.323
C. Q.922
D. Q.931
Answer: B
Question 3.
What is the function of a gatekeeper in a converged network?
A. Provides network connectivity for legacy systems.
B. Provides admission control and address translation between endpoints.
C. Manages calls between three or more endpoints to facilitate multipoint conferencing.
D. Performs call setup and address translation between packet-switched and circuit-switched
networks.
Answer: B
Question 4.
Which device should be implemented to provide accounting, billing and call-routing services in an H.323 infrastructure?
A. Gateway
B. Gatekeeper
C. Terminal adapter
D. Multipoint Control Unit
Answer: B
Question 5.
During the call setup phase, call setup information is transmitted as digital information through an associated channel that is logically separate from the media stream channel.
Which of the following protocols match this description?
A. SIP protocol
B. Q.931 protocol
C. H.323 protocol
D. In band circuit switched protocol
Answer: B
Question 6.
During the call setup phase, call setup information is transmitted as non ASCII-based digital information to a gatekeeper, while the media stream is transmitted directly from endpoint to endpoint.
Which of the following protocols does this describe?
A. SIP
B. Q.931
C. H.323
D. H.320
Answer: C
Question 7.
What is the function of a gateway in a converged network?
A. Provides Quality of Service (QoS) to converged networks.
B. Provides admission translation and address control between IP endpoints.
C. Manages calls between three or more endpoints to facilitate multipoint conferencing.
D. Performs call setup and address translation between circuit-switched and packet-switched
networks.
Answer: D
Question 8.
Which device should be implemented to connect an H.323 infrastructure to the PSTN (Public Switched Telephone Network)?
A. Gateway
B. Gatekeeper
C. Terminal adapter
D. Multipoint Control Unit
Answer: A
Question 9.
Which of the following is a common characteristic of circuit-switched networks?
A. A call uses multiple circuits, releasing them during periods of silence for maximum efficiency.
B. A call has exclusive use of the entire circuit for the duration of the call but is inherently
expensive.
C. A call can be completed without the need for any signaling because it uses PSTN circuits
instead of TCP/IP.
D. A call has a very robust set of Quality of Service (QoS) options that allows to overcome
congestion and latency problems.
Answer: B
Question 10.
Which of the following is a common characteristic of most packet- switched voice networks?
A. A call has dedicated use of the entire circuit for the duration of the call but is inherently
expensive.
B. A call can be completed without the need for any signaling because it uses TCP instead of
PSTN circuits.
C. A call has no Quality of Service (Q0S) options, causing it to be vulnerable to congestion and
latency problems.
D. A call uses multiple paths, switching among them as they share those paths with other calls for
maximum efficiency.
Answer: D
Question 11.
Which of the following has been traditionally used to digitize standard voice at 64 Kbps?
A. G.729
B. G.728
C. G.711
D. G.723
Answer: C
Question 12.
An existing network with 500 users and 25 servers is experiencing excessive broadcast traffic.
Which of the following can be added to limit broadcasts?
A. Router
B. Switch
C. Proxy server
D. Traffic shaper
Answer: A
Question 13.
Which of the following devices maximizes the efficient utilization of LAN media?
A. Hub
B. Router
C. Switch
D. Bridge
Answer: C
Question 14.
A customer wants to implement real-time applications.
Which of the following devices will allow traffic segmentation and keep latency low?
A. Hub
B. Switch
C. Router
D. CSU/DSU
Answer: B
Question 15.
Which of the following protocols uses the Data Link Connection Identifier (DLCI)?
A. PPP
B. SONET
C. 802.3
D. Frame relay
Answer: D
Question 16.
Which of the following is defined by IEEE 802.2?
A. The format of IP host addresses
B. The most common LAN technology: Ethernet
C. The Logical Link Control (LLC) sub layer
D. The format of Media Access Control (MAC) addresses
Answer: C
Question 17.
When connecting a DTE to a DCE, which type of cable is used?
A. Crossover cable
B. Reversing cable
C. Null modem cable
D. Straight-through cable
Answer: D
Question 18.
A modem is an example of which type of equipment?
A. DCE
B. DTE
C. CSU
D. Codec
Answer: A
Question 19.
A company has upgraded its network from 10 Mbps to 100 Mbps by replacing its existing 10-Mbps hubs with 100-Mbps hubs. The network is now experiencing performance problems.
Which of the following is the most likely cause?
A. 100BaseT networks do not allow hubs, only switches.
B. The network is using a mixture of Cat3 and Cat5 cabling.
C. The servers on the network are using bus-mastering interface cards
D. The pin-out of the P.3-45 network connector is different for l00BaseT.
Answer: B
Question 20.
For outside cabling, which of the following cable types has the highest immunity to the effects of lightning?
A. Coaxial
B. Fiber optic
C. Shielded twisted pair
D. Unshielded twisted pair
Answer: B
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Question 1.
LSC validation is failing on a new SCCP IP phone that you have just added to the Cisco Unified CallManager 5.0 cluster. No other IP phones are experiencing any problems with LSC validation.
What can you do to help pinpoint the problem?
A. Check for security alarms
B. Verify that the authentication string is correct in the Cisco Unified CallManager device
configuration screen
C. View the SDI trace output
D. Use the Security configuration menu on the IP phone to verify that an LSC has been
downloaded to the IP phone
Answer: D
Question 2.
Which three capabilities can't be configured if the default dial peer is matched? (Choose three.)
A. Set preference to 1
B. Invoke a Tcl application
C. Enable dtmf-relay
D. Set codec to G.711
E. Disable DID
F. Disable VAD
Answer: B, C, F
Question 3.
When using trace output to troubleshooting a Cisco Unified CallManager 5.0 problem, how can you collect and view the trace files?
A. Configure the proper trace settings on the Cisco Unified CallManager Serviceability page and
then use the embedded RTMT tool to view the trace files
B. Configure the proper trace settings on the Cisco Unified CallManager Serviceability page and
download the RTMT plug-in from the CallManager Administration page to view the trace output
C. Download the RTMT plug-in from the Cisco Unified CallManager Serviceability page to view
the preconfigured trace files
D. Configure the proper alarms and traces on the Cisco Unified CallManager Administration page
and view the output with the RTMT plug-in
Answer: B
Question 4.
You are troubleshooting why a user can't make calls to the PSTN. You are reviewing trace files and you found where the user's IP phone initiates the call but you never see the call go out the gateway.
What is the next step in troubleshooting this issue?
A. Look in the SDL trace file to see if there is a signal to another Cisco Unified CallManager node
with the same time-stamp
B. Look in the MGCP trace file to determine which MGCP gateway the call was sent to
C. Look in the IP Voice Media Streaming APP trace file to see if an MTP was invoked
D. Look in the SDL trace file to see if there is a signal to anther Cisco Unified CallManager node
with the same TCP handle
Answer: A
Question 5.
Exhibit:
Your work as a network engineer at ITCertKeys.com. Please study the exhibit carefully.
Voice bearer traffic is mapped to which queue in FastEthernet0/2?
A. Queue 2
B. Queue 3
C. Queue 1
D. Queue 4
Answer: A
Question 6.
Exhibit:
Your work as a network engineer at ITCertKeys.com. Please study the exhibit carefully. You have received a trouble ticket stating that calls to international numbers are failing. To place an international call, users dial the access code, "9," followed by "011", the country code and the destination number. After entering the debug isdn 1931 command on the MGCP gateway, you have the user attempt the call again.
Base on the debug output, what is the most likely cause of this problem?
A. The TON in incorrect
B. The circuit is not configured correctly or has a physical layer issue
C. Cisco Unified CallManaager is not stripping the access code before sending the call to the
gateway
D. The gateway dial peer needs to prefix "011" to the called number so the PSTN knows this is
an internation call
E. The user's CSS does not permit international calls
Answer: A
Question 7.
You have developed a dial plan for Cisco Unified CallManager 5.0 solution. All the route patterns, partitions, calling search spaces and translation rules have been configured. Before starting up the system you wish to test the dial plan for errors.
Which Cisco Unified CallManager tool will simplify this testing?
A. Route Plan Report
B. Dial Plan Installer
C. Dialed Number Analyzer
D. RTMT Traces and Alarms
Answer: C
Question 8.
You have just obtained a list of the following options:
all patterns
unassigned DN
Call Park
Conference
Directory Number
Translation Pattern
Call pickup group
Route pattern
Message waiting
Voice mail
Attendant console
What have you selected in order to produce this list?
A. Route Plan > External Route Plan Wizard
B. Control Center > Feature Services
C. Route Plan > Route Plan Report
D. Dialed Number Analyzer
Answer: C
Question 9.
You have configured the Enable Keep Alive check under Trace Filter settings.
How does this change the trace output?
A. It adds the IP address of the endpoint in hex
B. It maps the unique TCP handle for the endpoint to the MAC address of the endpoint in the
trace output
C. It adds the SCCP messages and all fields sent as part of that message
D. It adds TCP socket numbers between the endpoint and Cisco Unified CallManager for the
session
Answer: B
Question 10.
When using trace output to troubleshooting a Cisco Unified CallManager 5.0 problem, how can you collect and view the trace files?
A. Configure the proper trace settings on the Cisco Unified CallManager Serviceability page and
download the RTMT plug-in from the CallManager Administration page to view the trace output
B. Configure the proper alarms and traces on the Cisco Unified CallManager Administration page
and view the output with the RTMT plug-in
C. Download the RTMT plug-in from the Cisco Unified CallManager Serviceability page to view
the preconfigured trace files
D. Configure the proper trace settings on the Cisco Unified CallManager Serviceability page and
then use the embedded RTMT tool to view the trace files
Answer: A
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