CT0-101 Convergence+ Certification Practice Exam Set 4

Which of the following does signaling refer to in converged data communications?



Options are :

  • The transmission of encoded audio or video signals.
  • The transmission echo rate of decoded audio or video signals.
  • The beaconing rate of a transmission across a network medium.
  • The continuous transmission of error packets on a failing switch.

Answer : The transmission of encoded audio or video signals.

Comptia Linux+ LX0-103 Certification Exam Practice Test Set 4

Which of the following IP address classes do multicast addresses get assigned?



Options are :

  • Class B
  • Class D
  • Class A
  • Class C

Answer : Class D

A VoIP solution is using 802.11 access points in its topology. Which of the following protocols

would be used?



Options are :

  • Orthogonal Frequency Division Multiplexing (OFDM)
  • High Performing Local Area Network (HiperLAN)
  • Packet Binary Convolution Coding (PBCC)
  • High-Rate Data Sequence Spread Spectrum (HR / DSSS)

Answer : Orthogonal Frequency Division Multiplexing (OFDM)

A business wants to connect its VoIP system to a partners VoIP system across the Internet. Which

of the following provides the MOST secure connection?



Options are :

  • Install a VPN between both sites.
  • Install new proxy servers at both sites for VoIP system connectivity.
  • Open the necessary ports in the firewall at both sites.
  • Enable one to one Network Address Translation (NAT) at both sites for the VoIP system.

Answer : Install a VPN between both sites.

CT0-101 Convergence+ Certification Practice Exam Set 9

Which of the following forms of a network security breach would an Intrusion Detection System

(IDS) be MOST vulnerable to when running on a converged network?



Options are :

  • Macro exploits
  • Legacy worm outbreaks
  • Zero day attacks
  • Root kit vulnerability

Answer : Zero day attacks

Which of the following would be the BEST way to see what traffic has passed from a source to a

destination endpoint?



Options are :

  • Use RMON to check the network switch ports for errors and utilization by the traffic.
  • Use a network map to view the paths taken and test each device one by one.
  • Use a netstat on the destination endpoint to see what TCP/UDP ports the traffic is using.
  • Use a packet analyzer to capture the traffic between the two endpoints.

Answer : Use a packet analyzer to capture the traffic between the two endpoints.

Which of the following layers of the OSI model does 802.1x provide port based network access

control?



Options are :

  • Transport layer
  • Network layer
  • Data Link layer
  • Application layer
  • Physical layer

Answer : Data Link layer

CompTIA JK0-801 A+ Certification Part 2 Practice Exam Set 4

In a contact center, which of the following information is critical to properly route a call to an

Interactive Voice Response (IVR)?



Options are :

  • Hunt group
  • Automatic Number Identification (ANI)
  • Calling Line Identification
  • DNIS

Answer : DNIS

Which of the following would MOST likely be used to check WAN links that are being over utilized?



Options are :

  • Traceroute
  • SNMP
  • Packet analyzer
  • Path ping

Answer : SNMP

Which of the following devices is used to circumvent the problem of transferring VoIP traffic across

dissimilar networks when Network Address Translation (NAT) and firewalls are used?



Options are :

  • Session Border Controller (SBC)
  • Demilitarized Zone (DMZ) Server
  • SIP Redirect Server
  • Proxy Server

Answer : Session Border Controller (SBC)

CompTIA 220-801 A+ Advanced Certification Practice Exam Set 3

There are plans to deploy a new VoIP system between two sites. The existing WAN bandwidth is

768 Kbps and half this must remain available to data. How many concurrent VoIP calls can be

made using G. 711 compression?



Options are :

  • approximately 6
  • approximately 4
  • approximately 5
  • approximately 3

Answer : approximately 4

There are two different VLANs on the network, one for multimedia and one for data. A network

switch has a VoIP device connected to it, but the device cannot register with the gatekeeper,

which is connected to a core switch. Which of the following would MOST likely be the cause of the

problem? (Select TWO)

A. VLAN routing is disabled in the network core for the multimedia VLAN.

B. The port the VoIP device is connected to is not setup for the multimedia VLAN.

C. The default gateway address is setup incorrectly on the network switch.

D. The trunk between the network switch and the network core is not setup to pass the multimedia

VLAN.



Options are :

  • C,D
  • A,B
  • B,C
  • B,D

Answer : B,D

Which of the following are methods of displaying multiple parties in a video conference? (Select

TWO)

A. Multipoint Control Unit (MCU)

B. Broadcast

C. Matrixing

D. Multicast

E. SIP



Options are :

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

Answer : A,E

220-702 CompTIA A+ Practical Application Certification Exam Set 4

A technician is setting up a video conference between two locations via a third, less trusted

network. Which of the following security measures would help the technician create a secure

connection between these two locations?



Options are :

  • Virtual Private Network (VPN)
  • Network Address Translation (NAT)
  • Demilitarized Zone (DMZ)
  • Intrusion Prevention System (IPS)

Answer : Virtual Private Network (VPN)

Which of the following devices will send out alerts when a possible LAN attack is in progress?



Options are :

  • VPN Concentrator
  • Proxy Server
  • File server
  • Intrusion Detection System (IDS)

Answer : Intrusion Detection System (IDS)

Which of the following OSI layers does Q.931 use on an ISDN line?



Options are :

  • Layer one
  • Layer 3
  • The physical layer
  • Layer 2

Answer : Layer 3

CompTIA CySA+ Set 5

Which of the following should a technician do to capture a network trace with a protocol analyzer

in a

switched ethernet environment?



Options are :

  • Activate netstat on the LAN switch.
  • Turn on port mirroring on the segment in question.
  • Turn on logging on the ethernet switch in question.
  • Wait for the problem to occur and quickly plug in the protocol analyzer.

Answer : Turn on port mirroring on the segment in question.

Which of the following BEST describes what the ENUM standard proposes?



Options are :

  • Change the Domain Name Service (DNS) system to map to phone numbers instead of IP addresses.
  • Map telephone numbers to IP addresses.
  • Changes the signaling protocol used by service providers from SS7 to SIP.
  • Change the current E. 164 numbering scheme.

Answer : Map telephone numbers to IP addresses.

Which of the following protocols are used at the transport layer of the OSI model to transmit

speech samples in a telephone conversation?



Options are :

  • Address Resolution Protocol (ARP)
  • TCP
  • RTP
  • User Datagram Protocol (UDP)

Answer : User Datagram Protocol (UDP)

FC0-U41 CompTIA Strata IT Fundamentals Practice Exam Set 6

Which of the following are advantages of using video compression, when compared with sending

uncompressed streams?



Options are :

  • Compressed streams provide a higher quality playback than uncompressed streams.
  • Compressed streams are easier to edit than uncompressed streams.
  • Compressed streams are able to be transmitted over lower bit rate networks than uncompressed streams.
  • Compressed streams handle noise and interference better than uncompressed streams.

Answer : Compressed streams are able to be transmitted over lower bit rate networks than uncompressed streams.

When getting ready to upgrade a phone system, which of the following would be the FIRST step

that a technician would take?



Options are :

  • Reboot the phone system
  • Save the phone systems Call Detail Record (CDR) logs
  • Set the phone system to factory defaults
  • Create a backup of the phone system

Answer : Create a backup of the phone system

If an active RTP connection between two IP phones is using port 1370, then the RTP connection

uses which of the following ports?



Options are :

  • A random port number
  • 1369
  • 1371
  • 1370

Answer : 1371

CompTIA Project+ (PK0-004) 5 Practice Test 2019 Set 2

Which of the following describe the proper message order from start to finish for an ISDN call?



Options are :

  • setup, alerting, connect, connect acknowledge, disconnect, disconnect acknowledge
  • setup, call proceeding, alerting, connect, talk path, disconnect, disconnect acknowledge
  • setup, call proceeding, connect, connected, talk path, disconnect, disconnect acknowledge
  • setup, call proceeding, alerting, connect, connect acknowledge, disconnect, disconnect acknowledge

Answer : setup, call proceeding, alerting, connect, connect acknowledge, disconnect, disconnect acknowledge

A company has decided to implement video streaming, so that the entire company can watch a

live video broadcast of the companies quarterly meeting. Which of the following networking

protocols should the technician implement, and why?



Options are :

  • Unicast, because it is already being used for network routing protocols.
  • Multicast, because it is already being used for network routing protocols.
  • Unicast, because it uses network resources most efficiently.
  • NONE
  • Multicast, because it uses network resources most efficiently.

Answer : Multicast, because it uses network resources most efficiently.

When a user tries to dial an international number the call fails to dial out of the phone system. The

technician dials from another phone on the same phone system and is able to complete an

international call. Which of the following is the MOST likely cause?



Options are :

  • There is not an entry specifying international calls in the users phone privileges.
  • The central office does not support dialing international numbers.
  • There is not an entry specifying international calls in the call route table.
  • The wrong digits are stripped returning a central office error that the call can not be completed.

Answer : There is not an entry specifying international calls in the users phone privileges.

220-802 CompTIA A+ Certification Practice Exam Set 7

To improve security between a main and remote site a new firewall was installed between them.

Users now complain of the following symptom: Users can dial between sites, the remote phone

rings and when the phone is answered the line is dead, no voice can be heard. Which of the

following is the MOST likely cause of this issue?



Options are :

  • The new firewall is blocking remote IP endpoint registration.
  • The new firewall is blocking the RTP media ports.
  • The new firewall is blocking call setup.
  • The new firewall is blocking TCP port 1720.

Answer : The new firewall is blocking the RTP media ports.

Which of the following standards is based on the SIP protocol for presence and instant

messaging?



Options are :

  • Session Description Protocol (SDP)
  • User Agent
  • OPTIONS
  • SIMPLE

Answer : SIMPLE

Which of the following frame rates does Common Intermediate Format (CIF) operate in order to

provide good quality video conferencing?



Options are :

  • 20 fps
  • 25 fps
  • 15 fps
  • 30 fps

Answer : 30 fps

JK0-802 CompTIA A+ Certification Exam Set 7

Which of the following is an advantage of enabling video conferencing on an IP-PBX?



Options are :

  • The QoS settings of the IP-PBX guarantees optimal video calls.
  • The dial plan of the IP-PBX can be leveraged to create video calls.
  • The standards supported by the IP-PBX offer interoperability of video devices.
  • The scalability of the IP-PBX compares to that of video conferencing bridges.

Answer : The dial plan of the IP-PBX can be leveraged to create video calls.

Which of the following statements are true for an H. 323 gateway? (Select TWO)

A. An H. 323 gateway is a transport layer device in the OSI model.

B. An H. 323 gateway interfaces the IP-based media channels to legacy signaling and transport

technologies.

C. An H. 323 gateway performs transcoding between H. 261 and G. 729.

D. An H. 323 gateway normally provides additional functions such as echo cancellation and

silence suppression.

E. An H. 323 gateway provides a map between IP addresses to telephone numbers.



Options are :

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

Answer : B,D

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