Deck 11: Computer Communication and the Internet

Question 1

What type of transmission is it when start/stop pulses are used in the coding of signals?
A.Synchronous
B.Binary
C.Asynchronous
D.Alphanumeric

Answer 1

Asynchronous

Question 2

What is the most common alphanumeric coding scheme for binary data?
A.EBCDIC
B.ADSL
C.ASCII
D.ANSI

Answer 2

ASCII

Question 3

All computer networks require some type of networking software to run the ___________.
A.LAN
B.MAC
C.IEEE
D.DCE

Answer 3

LAN

Question 4

When troubleshooting computer networks,which command provides a way to verify the operation of the network?
A.Timestamp
B.Ping
C.Near-end crosstalk
D.Tracert

Question 5

Which of the following capitalizes on a high-bandwidth network to deliver high-speed,two-way data?
A.Integrated services digital networks
B.Voice frequency channels
C.Computer networks
D.Cable modems

Question 6

What was the system originally called that was developed in the early 1970s to link academic institutions and their researchers involved with military defense activities?
A.FireWire
B.Internet
C.ARPANET
D.Hypertext

Question 7

Two common problems that occur with unshielded twisted-pair wiring are that the pairs become crossed or _________.
A.shortened
B.stretched
C.corroded
D.split-up

Question 8

What does the DSL technology use for carrying the data?
A.Data link layers
B.Existing copper telephone lines
C.Computer links
D.Cable modems

Question 9

Two or more LANs linked together within a limited geographical area is called a(n)_____________.
A.wide area network (WAN)
B.open systems interconnection (OSI)
C.metropolitan area networks (MAN)
D.asymmetric DSL (ADSL)

Question 10

What code is used most commonly in telemetry systems that have slowly changing data?
A.ASCII
B.Gray
C.EBCDIC
D.Baudot

Question 11

The OSI reference model contains seven layers. What layer accepts and structures the messages for the application?
A.Presentation
B.Application
C.Session
D.Transport

Question 12

Who originally developed the IEEE 1394 connection,which is a high-speed serial connection available for computers and peripherals?
A.Microsoft
B.FCC
C.Apple
D.IBM

Question 13

Which of the following has become a nearly universal high-speed serial communications interface?
A.IP telephony
B.xDSL
C.USB port
D.ASCII

Question 14

Which of the following is the common serial data connection for computer modems and the mouse interface?
A.RS-232
B.RS-422
C.RS-449
D.RS-485

Question 15

What type of topology is the most common in today's LANs?
A.Token-ring
B.Broadcast
C.Bus
D.Star

Question 16

In LANs,_________ manage traffic congestion by employing a flow-control mechanism to direct traffic to alternative paths and provide protocol conversion when needed.
A.gateways
B.formats
C.switches
D.routers

Question 17

What protocol is the most widely used for local-area networks (LANs)?
A.Networking
B.Ethernet
C.Internet
D.Handshaking

Question 18

In a synchronous system both sender and receiver are exactly synchronized to the same clock __________.
A.frequency
B.time
C.hour
D.minute

Question 19

What is the most common maintenance situation for larger LAN installations?
A.Ethernet protocol
B.Handshaking protocol
C.LAN interconnection
D.Help desk

Question 20

Which of the following means the external devices can be plugged in or unplugged at any time?
A.Open system interconnection
B.Ranging
C.Parity
D.Hot-swappable

Question 21

How many peripherals can be connected to one USB port?
A.127
B.25
C.5
D.73

Question 22

The media used for transporting data in a modern computer network are either twisted-pair cables or ____________.
A.OE pins
B.fiber cables
C.data communications equipment
D.cable modems

Question 23

What term is used to indicate a computer,computer terminal,or personal computer?
A.Data communications equipment (DCE)
B.Data set ready (DSR)
C.Data carrier detect (DCD)
D.Data terminal equipment (DTE)