CT0-101 Convergence+ Certification Practice Exam Set 10

Which of the following is the recommended traffic class for interactive voice data using the 802.1p

standard?



Options are :

  • 1
  • 4
  • 6
  • 0

Answer : 6

JK0-019 CompTIA E2C Network + Certification Exam Set 2

How many DS-0s comprise a DS-1 circuit?



Options are :

  • 24
  • 23
  • 64
  • 128

Answer : 24

A technician has been asked to install a firewall to protect the company's network. Currently the

company's network has the following in order of attachment; an internet gateway modem; a multihomed

VoIP server attached to the gateway modem with 4 NIC installed; NIC one is attached to

the gateway modem; 25 users on a switch attached to NIC 2; a file server is attached to the VoIP

Server NIC 3; a database server is attached to the VoIP server NIC 4. At which of the following

locations should this firewall program be installed?



Options are :

  • Between the database server and the VoIP server on NIC 4
  • Between the VoIP server and the ethernet switch on NIC 2
  • Between the VoIP server and the gateway modem on NIC one
  • Between the file server and the VoIP server on NIC 3

Answer : Between the VoIP server and the gateway modem on NIC one

A company is piloting an IP-PBX. Which of the following would be the BEST way for the company

to proceed in a cost effective manner?



Options are :

  • Install soft phones with different numbers and maintain the current desk phones as well.
  • Select a small number of users as a test bed for IP telephony.
  • Implement a WiFi network and get WiFi phones to connect to the IP PBX.
  • Buy all new IP hard phones for the users.

Answer : Select a small number of users as a test bed for IP telephony.

N10-006 CompTIA Network+ Certification Practice Test Set 9

Which of the following layers of the OSI model does the 802.1p standard operate?



Options are :

  • 3
  • 5
  • 7
  • 2

Answer : 2

How many DS-1s comprise a DS-3 circuit?



Options are :

  • 28
  • 24
  • 32
  • 64

Answer : 28

Two universities want to enable their professors to make calls over the Internet using SIP. Which

of the following call setup sequences would allow this to happen?



Options are :

  • Professor 1 => SIP Proxy 1 => Session Border Controller 1 => Internet => Session BorderController 2 => SIP Proxy 2 => Professor 2
  • Professor 1 => Session Border Controller 1 => SIP Proxy 1 => Internet => SIP Proxy 2 => Session Border Controller 2 => Professor 2
  • Professor 1 => Session Border Controller 1 => Internet => Session Border Controller 2 => Professor 2
  • Professor 1 => Internet => Professor 2

Answer : Professor 1 => SIP Proxy 1 => Session Border Controller 1 => Internet => Session BorderController 2 => SIP Proxy 2 => Professor 2

CompTIA Cloud+ Certification Test Set 5

Which of the following would a technician use to prioritize an incoming call based on the dialed

number?



Options are :

  • CID
  • DNIS
  • Automatic Call Distributor (ACD)
  • Automatic Number Identification (ANI)

Answer : DNIS

An Ethernet network transports 30ms of G. 711 coded voice for each IP packet. How much LAN

bandwidth is consumed?



Options are :

  • approximately 8kbps
  • approximately 64kbps
  • approximately 128kbps
  • approximately 85kbps

Answer : approximately 85kbps

A technician is discussing IP Telephony Media Encryption technologies with a customer. Which of

the following statements to the customer is correct?



Options are :

  • IP Media Encryption technologies can ensure end-to-end encryption of voice traffic on the IP Network
  • IP Media Encryption can ensure end-to-end encryption of voice traffic between an IP Endpoint and a telephone on the PSTN.
  • IP Media Encryption technologies can ensure end-to-end encryption of voice traffic between all internal calls and external calls to the Public Switched Telephone Network (PSTN).
  • IP Media Encryption can ensure end-to-end encryption of voice traffic as long the call is between internal IP endpoints, analog and digital phones.

Answer : IP Media Encryption technologies can ensure end-to-end encryption of voice traffic on the IP Network

220-802 CompTIA A+ Certification Practice Exam Set 4

What 802.1p traffic class is commonly used for voice traffic?



Options are :

  • 6
  • 7
  • 0
  • 1

Answer : 6

Which of the following codecs would be used to conserve bandwidth and will use the least

overhead?



Options are :

  • 729
  • 728
  • 722
  • 711

Answer : 729

Which of the following functions are used to determine the call volume, abandoned calls, and

incoming call handling treatment?



Options are :

  • Logging
  • System health
  • Reporting
  • Alarming

Answer : Reporting

CV0-001 CompTIA Cloud+ Certification Practice Exam Set 5

Which of the following servers performs SIP requests on behalf of the client, and message

translation on a per-needed basis for messaging and network security?



Options are :

  • SIP Redirect server
  • SIP Location server
  • SIP Registrar server
  • SIP Proxy server

Answer : SIP Proxy server

Which of the following terms BEST describes when an unauthorized user dials into a companys

phone

system to access an outside line for personal gain?



Options are :

  • Denial of service (DoS)
  • Toll Fraud
  • Call forwarding
  • Call splitting

Answer : Toll Fraud

Which of the following is an advantage of Application Layer Gateway (ALG) compared to a

Stateful

Inspection firewall?

A. An H. 323 ALG has a built-in gatekeeper component to monitor registration and signaling

messages from the IP Endpoints.

B. An H. 323 ALG automatically opens and closes a range of configured firewall ports for the

unidirectional media channels.

C. An H. 323 ALG is registered as an IP endpoint to the gatekeeper and monitors H. 323

messages.

D. To successfully perform Network Address Translation (NAT) for an IP Telephony environment

requires an H. 323 ALG.

E. An H. 323 ALG recognizes the H. 323 protocol to dynamically open and close firewall pinholes

for the media channels during the duration of a call.



Options are :

  • B,C
  • C,D
  • D,E
  • A,B

Answer : D,E

CompTIA JK0-015 E2C Security+ Certification Practice Test Set 2

Which of the following features allows the use of multiple trunks to save cost?



Options are :

  • Automated Call Distribution (ACD)
  • Universal Dial Plan
  • Common Control Signaling (CCS)
  • Automatic Route Selection (ARS)

Answer : Automatic Route Selection (ARS)

Which of the following signals is sampled 4 times in the 4:2:2 ratio and is commonly used in Serial

Digital Interface (SDI) data streams and MPEG?



Options are :

  • Luminance
  • Color difference signal
  • Chroma
  • Synchronization

Answer : Luminance

Audio-tuning is the MOST crucial in which of the following types of endpoints?



Options are :

  • Softphone
  • Analog phone
  • WiFi handset
  • IP hard phone

Answer : Softphone

220-702 CompTIA A+ Practical Application Practice Exam Set 10

After implementing QoS for voice across a WAN, users of a database program begin to complain

of poor performance. Which of the following should the technician do to solve this issue?



Options are :

  • Reevaluate QoS for the data application to let the data traffic flow with equal priority to voice.
  • Reevaluate the mission-critical business applications and modify the QoS policy.
  • Remove the QoS settings for voice to once again let the data traffic flow.
  • Optimize the network behavior of that application.

Answer : Reevaluate the mission-critical business applications and modify the QoS policy.

Which of the following kinds of headsets would get the BEST sound quality if using a softphone on

a PC?




Options are :

  • A USB headset with a Digital Signal Processor (DSP)
  • A 2.5 mm (0.1 in.) headset connected to the PC sound card
  • A Bluetooth headset
  • An infrared headset

Answer : A USB headset with a Digital Signal Processor (DSP)

Which of the following WAN services would allow calls to flow directly between several sites in a

meshed network environment without having to traverse through a central hub?



Options are :

  • Peer-to-Peer (P2P)
  • DS-3
  • DSL
  • MultiProtocol Label Switching (MPLS)

Answer : MultiProtocol Label Switching (MPLS)

Test : CompTIA CySA+ (CS0-001)

Every six hours all the VoIP phones in a network reboot. Which of the following is the MOST likely

cause of this?



Options are :

  • DiffServ values resetting
  • Peak bandwidth times
  • Gateway is getting port errors
  • DHCP lease time

Answer : DHCP lease time

Several users at a company have H. 323 softphones on laptops on a data VLAN. The IP

Telephony components are segregated on a dedicated VLAN for voice. Which of the following

ports should be opened at the firewall between the two VLANs? (Select TWO)

A. UDP Port 3200 -9600 for the Media channels

B. The TCP port range of the RTP channels

C. TCP 1719

D. UDP 1720

E. UDP 1719

F. TCP 1720



Options are :

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

Answer : E,F

A hacker sets up a small handheld device that transmits Dual Tone Multi-Frequency (DTMF) and

other tones to make free calls from a public pay phone. Which of the following defines this type of

attack?



Options are :

  • Shoulder surfing
  • Man-in-the-middle
  • Phreaking
  • Snooping

Answer : Phreaking

CompTIA Cyber Security Analyst (CySA+) Practice Exams 2019 Set 3

A company opening a new office has 65 users that will need basic communication back to the

central hub over the IP intranet. These users will need 3 fax lines, 2 modems, and a PRI to the

Public Switched Telephone Network (PSTN) locally. Which of the following is the MOST cost

effective solution?



Options are :

  • IP-PBX with PRI analog cards and analog phones with IP Trunks connecting to the core.
  • Gateway with an analog card and IP phones registering to the core gatekeeper.
  • IP Phones registering to the core gatekeeper.
  • Gateway registering to the core gatekeeper, with PRI and analog cards, with analog phones.

Answer : Gateway registering to the core gatekeeper, with PRI and analog cards, with analog phones.

Two companies merge each with several remote locations which are using ISDN trunking. A

technician connects the companies using the existing systems. Which of the following features will

accomplish this?



Options are :

  • ISDN-PRI
  • Non-facility Associated Signaling (NFAS)
  • B8ZS
  • QSIG p.931

Answer : QSIG p.931

Which of the following protocols is SIP modeled after? (Select TWO)

A. User Datagram Protocol (UDP)

B. HyperText Transfer Protocol (HTTP)

C. HTML

D. Internet protocols

E. SMTP



Options are :

  • C,D
  • B,E
  • B,C
  • A,B

Answer : B,E

CompTIA 220-801 A+ Advanced Certification Practice Exam Set 9

Which of the following frames in a MPEG Group of Pictures (GOP) would be able to be decoded

by itself, and is always the first frame?



Options are :

  • Predicted frame - P
  • Decompression engine
  • Compression engine
  • Intra frame - I
  • Bi-directional frame - B

Answer : Intra frame - I

A company has deployed a meshed network environment and does not want the calls to traverse

through a central hub. Which of the following are benefits of this type of architecture? (Select

TWO)

A. Less delay

B. Less WAN hardware

C. Less compressions/decompressions

D. Simpler routing tables



Options are :

  • A,C
  • A,B
  • C,D
  • B,C

Answer : A,C

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