Quick Quiz

You need a sheet of paper

What do these abbreviations stand for?

PWM

PPM

PAM

PCM

ASK

FSK

AM

FM

IF

AF

RF

TRF amp

Pulse width modulation

Pulse position modulation

Pulse amplitude modulation

Pulse code modulation

Amplitude switch keying

Frequency switch keying

Amplitude modulation

Frequency modulation

Intermediate frequency

Audio frequency

Radio frequency

Tuned radio frequency amplifier

Circuit switched network

Message switched network

Packet switched network

Permanent link between sender and receiver for duration of message exchange

No permanent link established.

Entire message sent from router to router.

Message split in to small chunks called packets.

Each packet sent by different route.

Packets sent from router to router.

No permanent link established.

IP address range

Number of hosts

Class A

Class B

Class C

IP address range

Number of hosts

Class A 0-127 224-2

Class B 128 to 191 216-2

Class C 192-223 28-2