CT0-101 Convergence+ Certification Practice Exam Set 6

Which of the following BEST describes a centralized network?



Options are :

  • PBX at the main site with remote sites having digital phones on a gateway.
  • PBX at the main site with remote sites having IP phones on a PBX and a gateway.
  • PBX at the main site with remote sites having digital and IP phones on a PBX.
  • PBX at the main site with remote sites having digital phones on a PBX and a gateway.

Answer : PBX at the main site with remote sites having digital phones on a gateway.

CompTIA Cyber Security Analyst (CySA+) Practice Exams 2019 Set 9

Which of the following would a technician have to consider when calculating the bandwidth

required for VoIP applications? (Select THREE).

A. Signaling bandwidth requirements

B. Protocol overhead

C. Bandwidth capacity of the transport facility

D. Number of concurrent calls



Options are :

  • B,C,D
  • A,B,C
  • C,D,A
  • A,B,D

Answer : A,B,D

If a computer is used as a voice endpoint it is considered to be which of the following type of

phone?



Options are :

  • TDM
  • Hard
  • Wireless
  • Soft

Answer : Soft

Which of the following is the final step a technician should perform before starting the process of

upgrading an IP PBX?



Options are :

  • Perform an inventory of equipment.
  • Read the release notes.
  • Call technical support.
  • Perform a backup.

Answer : Perform a backup.

CompTIA CA1-001 Advanced Security Practitioner Practice Exam Set 7

One hundred users are connected to a SIP IP system and experience busy signals about half of

the time when trying to make a call to the public switched telephone network (PSTN). Internal calls

are working fine. Which of the following could be the reason?



Options are :

  • The IP/PSTN gateway and the LAN segment are shared with the backup server.
  • The IP/PSTN gateway does not have enough trunks for the number of users.
  • The IP/PSTN gateway is connected to the LAN with an Ethernet switch that has only 8 ports.
  • The entire LAN is congested and drops half of the SIP connection requests.

Answer : The IP/PSTN gateway does not have enough trunks for the number of users.


Which of the following are benefits of a full mesh versus a star E1/T1 network? (Select TWO).

A. Network cost is minimized.

B. Mesh supports redundancy.

C. Routing tables are easier to maintain.

D. Delays are minimized.



Options are :

  • B,C
  • C,D
  • B,D
  • A,B

Answer : B,D

Which of the following is used to measure the voice quality of codecs?



Options are :

  • Pulse Code Modulation (PCM)
  • Mean Opinion Score (MOS)
  • Bandwidth
  • Compression

Answer : Mean Opinion Score (MOS)

CompTIA JK0-022 E2C Security+ Compliance & Operational Exam Set 6

A technician notices that the frame packet loss is above the one percent threshold and needs to

correct the problem. Which of the following should the technician use as a measure to correct the

problem?



Options are :

  • Install a hybrid gateway and decrease the IP endpoints to increase frame rate buffer sizes.
  • Change the codec being used to decrease latency and packet loss
  • Install an 802.3af compatible switch.
  • Set up queue and forward on the routers for message load balancing and frame correction.

Answer : Change the codec being used to decrease latency and packet loss

According to the IETF, which of the following is the BEST functional description of a SIP phone in

its ability to initiate and terminate calls?



Options are :

  • Proxy Server and Location Server
  • SIP Presence and Location Server
  • User Agent Client (UAC) and User Agent Server (UAS)
  • Redirect Server and Registrar Server

Answer : User Agent Client (UAC) and User Agent Server (UAS)

A power over Ethernet (PoE) enabled IP phone is plugged into a PoE switch but does not power

on. Which of the following could be the reason? (Select TWO).

A. An IP communication protocol incompatible with PoE was selected on the phone.

B. The phone and the switch use different PoE implementations.

C. The IP phone was designed for 50Hz instead of 60Hz.

D. A standard Ethernet cable was used instead of a specific PoE cable.

E. The IP Phone drew too much power and the PoE switch turned power off.



Options are :

  • B,E
  • A,B
  • C,D
  • B,C

Answer : B,E

CompTIA Cloud+ Certification Test Set 6

Which of the following are the requirements to run a SIP softphone that supports only G. 711 on a

remote PC? (Select TWO).

A. The PC needs to meet the minimum hardware and software requirements of the softphone

application.

B. A symmetrical data connection is required because voice is bidirectional.

C. A secure VPN connection is required to prevent eavesdropping.

D. The dialup modem needs to support at least V.90 or V.92 in order to support G. 711 based IP

clients.

E. Support of QoS is required to run a SIP IP softphone.

F. The upload speed of the data connection should exceed 128kbps.



Options are :

  • C,D
  • A,F
  • E,F
  • A,B

Answer : A,F

Which of the following is the lowest layer of the OSI model that provides a mechanism for reliable

data transfer?



Options are :

  • Session
  • Transport
  • Network
  • Data link

Answer : Transport

Which of the following is a best practice for proper administration of IP PBX configurations?



Options are :

  • Make screen shots of the files and store on IP PBX management server
  • Store backup media on a tape
  • Backup every 24 hours, transfer and save data to remote storage
  • Telnet the file to an off-site FTP server

Answer : Backup every 24 hours, transfer and save data to remote storage

N10-006 CompTIA Network+ Certification Practice Test Set 1

Session Description Protocol (SDP) works at which of the following levels of the OSI model?



Options are :

  • Network
  • Application
  • Session
  • Transport

Answer : Application

Which of the following protocols will provide the BEST quality of video and the smallest file size?



Options are :

  • H. 263
  • MPEG-2
  • MPEG-1
  • H. 264

Answer : H. 264

Which of the following terms refers to the transmission path that runs from a service provider to

the voice switch?



Options are :

  • Trunk
  • PBX
  • Relay
  • Bridge

Answer : Trunk

FC0-U41 CompTIA Strata IT Fundamentals Practice Test Set 2

Which of the following is the BEST motive for performing VoIP network assessments before

deploying converged equipment?



Options are :

  • Ensure network SNMP services can receive reports on VoIP equipment
  • Ensure expected voice quality
  • Ensure network interfaces are set to the proper speed
  • Ensure network CTI interoperation

Answer : Ensure expected voice quality

Which of the following BEST describes what VoIP network assessments are intended to measure?

(Select THREE)

A. Packet route

B. Codec use

C. Interface settings

D. Jitter

E. Delay

F. Loss



Options are :

  • A,B,C
  • C,D,E
  • B,C,D
  • D,E,F

Answer : D,E,F

Which of the following codecs will provide the BEST mean opinion score (MOS) under good

network

conditions?



Options are :

  • G. 711
  • iLBC
  • G. 722
  • G. 729

Answer : G. 722

Practice : CompTIA CySA+ (CS0-001)

A company has IP Phones that are connected to an IEEE 802.3af, powered by the workgroup

switch. Some IP hard phones have a PC port at the back of the phone to connect the users PC.

Which of the following technologies provide a mechanism for authenticating access to the network

for both the phone and the PC?



Options are :

  • 802.3af
  • 802.1X
  • Intrusion Prevention System (IPS)
  • VLAN

Answer : 802.1X

An 8 must be dialed at the beginning of a number for Public Switched Telephone Network (PSTN)

access from the PBX. A technician wants to enable bypassing of the dial 8 code so that users can

just dial numbers without first dialing the 8. Which of the following would the technician need to

check before enabling this bypass to ensure the LEAST amount of problems?



Options are :

  • That all extensions point to the correct least cost route table for dial access.
  • That no extensions are added in a range that might be an outside number.
  • That all extensions are in the dial 8 range thus eliminating the need to dial 8.
  • That no extensions are in the dial 8 range so users can get PSTN access.

Answer : That no extensions are added in a range that might be an outside number.

Which of the following BEST depicts the necessary components in order for a branch VoIP

gateway to survive a WAN outage?



Options are :

  • Call processing engine and local trunk ports
  • UPS and secondary router
  • DSL modem and Point to Point Protocol over Ethernet (PPPoE) support
  • Power over Ethernet (PoE) and DHCP

Answer : Call processing engine and local trunk ports

Practice Test : CompTIA A+ Certification 220-902

An existing branch with one hundred regular users (0.17 Erlang/user) has adequate local trunking

with

twenty-six trunks. The branch is expanding with fifty outbound call center agents (1 Erlang/agent).

How many trunks will be required at the branch?



Options are :

  • 82
  • 76
  • 52
  • 39

Answer : 76

Which of the following is the standard for security in an enterprise wireless network?



Options are :

  • 802.11n
  • 802.11a
  • 802.11g
  • 802.11i

Answer : 802.11i

Which of the following protocols should be used as a secure call setup for SIP?



Options are :

  • RSA
  • IPSEC
  • PPTP
  • TLS

Answer : TLS

FC0-U41 CompTIA Strata IT Fundamentals Practice Test Set 10

In a VoIP application involving two sites, call control admission techniques are used to:



Options are :

  • determine if bottlenecks are occurring at both ends.
  • prevent illegal tampering with the voice system.
  • prevent the number of simultaneous calls from exceeding the bandwidth capacity.
  • determine the impact of simultaneous voice conversations on the performance of the link.

Answer : prevent the number of simultaneous calls from exceeding the bandwidth capacity.

A company needs to train agents located at remote locations without having to incur travel

expenses. The training involves sharing applications and Power Point slides. Which of the

following BEST addresses this customers need?



Options are :

  • Unified messaging
  • Call center
  • Web collaboration
  • Audio Conference

Answer : Web collaboration

A technician has installed a softphone application on a laptop with the Microsoft operating system.

To ensure QoS for the real time application voice, the Microsoft Packet Scheduler is enabled.

Which of the following issues should the technician watch for?



Options are :

  • A VPN client could contend with Microsoft Packet Scheduler for resources on the laptop.
  • The Microsoft Packet Scheduler is only available after a valid Kerberos ticket is received after a successful Domain Login.
  • A VPN client could have stack incompatibility with the Microsoft Packet Scheduler.
  • The Microsoft Packet Scheduler is not dynamic and can only adjust the call admission control if it is connected with a low bandwidth link.

Answer : A VPN client could have stack incompatibility with the Microsoft Packet Scheduler.

Comptia A+ (220-801) Certification Exam Practice Test Set 3

How would the E164 number +19725551234 be represented as ENUM?



Options are :

  • 4.3.2.1.5.5.5.2.7.9.1.e164.arpa
  • e164.arpa.1.9.7.2.5.5.5.1.2.4
  • 1.9.7.2.5.5.5.1.2.3.4.e164.arpa
  • e164.aepa. 4.3.2.1.5.5.5.2.7.9.1

Answer : e164.aepa. 4.3.2.1.5.5.5.2.7.9.1

Which of the following layers of the OSI model does data encryption and compression occur at?



Options are :

  • Physical
  • Link
  • Presentation
  • Network

Answer : Presentation

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