CompTIA Convergence+ Set 6

1.

The main points of attack that can be compromised during authentication on a converged network are: (Select THREE)

verification of the ISP credentials. verification of the server being used. verification of the client credentials. verification of the session integrity. verification of the line circuit.

2.

A technician is worried that email messages are being captured, modified and then resent to the intended recipients, while in transit. Which of the following can be MOST easily installed to detect and protect against this type of abuse?

Digital Certificates Steganography Public Key Infrastructure (PKI) Encryption

3.

After creating three separate VLANs on LAN switches, the technician determines users cannot pass data traffic from one VLAN to another. Each VLAN can individually communicate with other users that are located in their own VLAN group. Which of the following must be done to solve this problem?

Attach routers to each LAN switch and apply forwarding rules to the subnet groups to communicate through the routers. On the LAN switches, apply forwarding rules to the subnet groups to communicate through t he trunks. Create a master subnet group and forward all LAN traffic across each of the trunks as required. Create separate subnet groups on each LAN switch and apply forwarding to communicate through theswitches to the trunk lines.

4.

Which of the following is a benefit of the 802.11a WLAN standard?

It is in a spectrum that is licensed worldwide and has no interference. It is an IETF standard and is broadly supported by manufacturers. It is out of the frequency range normally used by cordless teleph ones, microwave ovens, and otherappliances. It is backwards compatible to existing 802.11b WLAN equipment.

5.

A merged company has two digital voice messaging systems from different manufacturers. Which of the following standards would the combined company consider to network the multi-vendor messaging systems together?

SMTP Internet Message Access Protocol (IMAP) TCP/IP Voice Profile for Internet Mail (VPIM)

6.

Voice quality issues are reported between two remote sites that are connected via an IPSec VPN. The technician believes that the service provider network may be the cause of voice quality issues, and asks the service provider for packet loss, jitter, and delay statistics of the voice calls. Which of the following makes it impossible for the service provider to meet this request?

End-to-end packet loss, jitter, and delay statistics are gathered as part of the SNMP packets between endpoints. End-to-end packet loss, jitter, and delay statistics are gathered as part of the Real Time Control Protocol(RTCP) packets between routers. End-to-end packet loss, jitter, and delay statistics are gathered as part of the RTCP packets betweenendpoints. End-to-end packet loss, jitter, and delay statistics are gathered as part of the SNMP packets betweenrouters.

7.

A telecommuter registering their softphone over an Internet VPN to the main sites IP PBX is complaining of one-way audio. The technician determines that Network Address Translation (NAT) is the cause of the issue. Which of the following should the technician consider to circumvent the NAT traversal issue?

Assign public IP addresses to the clients PC at home Deploy a Session Border Controller (SBC). Assign public IP addresses to the signaling cards Eliminate the VPN.

8.

Which of the following elements of the SIP protocol defines the media type to be established?

URI INVITE Session Detail Record Session Description Protocol

9.

A technician enables voice and signaling encryption between a heavily used IP -PBX and the IP endpoints at a remote site. Afterwards, the technician receives complaints of fast-busy signals from users at the remote site when they go off-hook. Which of the following BEST explains the cause?

The encryption algorithm adds overhead that exceeds the WAN bandwidth. The encryption algorithm is delaying the call setup time past its normal threshold. The encryption algorithm is affecting the QoS settings and calls are being blocked in the network. The encryption algorithm is using more resources on the voice cards, causing a lowered grade of service.

10.

The first message in SIP call setup is typically:

INVITE RINGING REGISTER AUTHENTICATE

CompTIA Convergence+ Set 6

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CompTIA Convergence+ Set 6

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