Unified Communications UC Technologies (VoIP)

Question 1

SIP -

Session initiation Protocol

Answer 1

Initiates, monitors, and terminates a VoIP session

Question 2

SDP -

Session Description Protocol

Answer 2

describes the contents/ what codecs are used (analog to digital conversion)

Question 3

RTP -

Real time Transport Protocol

Answer 3

Carries the VoIP data

Question 4

RTCP -

Realtime Transport Control Protocol

Answer 4

Monitor the VoIP connection/bandwidth management with SIP

Question 5

MSNP -

Microsoft Notification Protocol

Answer 5

Used by SKYPE

Question 6

VPN Data Encryption**

-MPPE = Microsoft Point-to-Point Encryption

Answer 6

Microsoft proprietary, used by PPTP);

—Needs MS-CHAP, MS-CHAPv2, OR EAP

Question 7

VPN Data Encryption**

-IPSec: Open Standard, used by L2TP (most common protocol)

Answer 7

VPN Data Encryption**

• –Tunnel mode with DES or 3DES (uses lots of CPU resources)
• –Transport mode used for LANs