100-890 Sample Questions Answers

Dynamic Host Configuration Protocol (DHCP)

Network Time Protocol (NTP)

Domain Name System (DNS)

Cisco Discovery Protocol

The voice gateway can perform only a compression function

Both a digital signal and noise are boosted by amplifiers

The analog signal from the telephone is digitized into PCM signals by the voice codec

Digital voice networks convert the sound waves into electrical signals that are analogous to the original sound waves

nslookup

ping

netstat -a

traceroute

Host CPU

Screen control unit

PDU

Codec

CTL contains a list of certificates and feature licenses that the IP phone is authorized to use

CTL specifies a list of configuration files that the phone can download from the TFTP server

CTL contains a list of Cisco Unified CM and TFTP servers that the IP phone is authorized to connect to.

CTL defines how the Cisco IP Phone communicates with Cisco Unified CM and provides a phone with its load ID

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