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NTC 360 Week 3 - Short - MWalker




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Week 3 – Short Answers
Class: NTC 360
Instructor: Stephen Omogbehin
Date: February 11, 2007
Use short answers to explain the difference between:
Synchronous and asynchronous – The difference between synchronous and
asynchronous is that synchronous communication happens in real time (instant
messaging), whereas asynchronous communication occurs with a delay. University of
Phoenix newsgroups are a prime example of asynchronous communication.
Analog and digital – analog is a signal that uses variable voltage to create continuous
waves, resulting in an inexact transmission. As opposed to analog signals, digital signals
are composed of signals that can have a value of only 1 or 0.
XON and XOFF – XON signifies the start of a modem transmission, whereas XOFF
signifies that the transmission is complete. XON and XOFF are both special characters.
Simplex and duplex – simplex can only either send or receive in one direction, whereas
duplex can both send and receive at the same time on the same transmission.
Serial and parallel transmission – serial transmission occurs as a series of 1s and 0s (1
bit at a time), while parallel transmission transmits and receives data in 8-bit chunks.
Baseband and broadband – the difference between baseband and broadband is that
broadband does not use binary encoding. Baseband uses a direct pulse set on a direct
current, meaning that only one transmission can occur at a time; by contrast, broadband
different radio frequency analog pulses to transmit data, thereby allowing broadband to
send more data at a time.
Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol (PPP) – the differences
between SLIP and PPP are that multiple Network layer protocols can be used with PPP
and PPP can support both asynchronous and synchronous communication.
Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP) – HTTP is the
language that Web clients and servers use to communicate. In contrast, FTP is an
Application layer protocol that manages transfers between TCP/IP hosts.
Transmission Control Protocol (TCP) and Internet Protocol (IP) – TCP operates at the
Transport Layer of the OSI Model, while IP operates at the Internet Layer of the Model.
Michelle L. Walker
Email address:
Telephone number: 309-642-1042

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