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CCNA Voice Quiz

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What protocols are critical for IP Phones to work correctly?

DNS
DHCP
NTP
TFTP

What command on an IOS switch configures a switchport for use with a Cisco IP Phone?

switchport voice <vlan number>
switchport voice vlan <vlan number>
voice vlan <vlan number>
vlan <vlan number> voice

What of the following statements are true:

SIP phones are simpler and therefore have smaller configuration files.
SCCP and SIP use the same configuration files.
SIP phones typically have larger configuration files.
SCCP Config files contain date, time and key assignments.

What configuration file is requested by phones from the TFTP server?

XMLDefault.cnf.xml
SEP<mac_address>.xml
SEP<mac_address>.cnf.xml
The phone is configured by SCCP broadcasts.

The G.711 Codec uses how much bandwidth?

16 kbps
64 kbps
128 kbps
32 kbps

Cisco's Unified Presence offers what features?

Instant Messaging
Auto Answer
Visibility into other user's call status.
Voice Encoding

What DHCP Option is used by CIsco IP Phones?

Option 150
Default Phone Switch Option
Option 6
Default Router Option

A CME router will uses what technology to convert analog voice to packetized voice?

A Digital Signal Processor
IOS CODEC
Encapsulation
Audio Conversion Software

To figure out how many concurrent calls are supported on a Unity Connection server what would you need to know?

The number of trunk ports.
The amount of RAM in the system.
Voicemail Ports
CUCM SCCP Hunt Groups

What technology allows multiple calls for flow simultaneously over a digital circuit?

MUX
TDM
TCP
SIP

PSTN analog phones experience "glare" because of this signalling type:

Loop Start
Ground Start
Q.931
SCCP

Based on the phone number: 1-610-555-5555 The parts, in order, of this phone number are:

Country Code - Station Code - Center Office Code - Area Code
Country Code - Area Code - Center Office Code - Station Code
Country Code - Area Code - Station Code - Center Office Code
Station Code - Center Office Code - Area Code - Country Code

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