a method of determining which device has access to the transmission medium at any time

a method access control technique or multiple-access transmission media

a very common bit-oriented data link protocol issued to ISO.

network access standard for connecting stations to a circuit-switched network

Practice Networking Miscellaneous Multiple Choice Questions Quiz-5

Q.1

A communications device that combines transmissions from several I/O devices into one line is a:

concentrator
modifier
multiplexer
full-duplex line
None of the above

Q.2

The main difference between synchronous and asynchronous transmission is

the clocking is derived from the data in synchronous transmission
the clocking is mixed with the data in asynchronous transmission
the pulse height is different.
the bandwidth required is different
None of the above

Q.3

Which of the following communications lines is best suited to interactive processing applications?

narrowband channels
simplex lines
full-duplex lines
mixed band channels
None of the above

Q.4

What is the first octet range for a class B IP address?

128 - 255
1 - 127
192 - 223
128 - 191
127 - 191

Q.5

To avoid transmission errors, a check figure is calculated by the

transmitting computer
receiving computer
both A and B
Start and stop bit
None of the above

Q.6

What is the first octet range for a class A IP address?

1 - 126
192 - 255
192 - 223
1 - 127
128 - 191

Q.7

Which of the following digits are known as the sub-address digits (for use by the user) of the Network User Address (NUA)?

05-Jul
01-Apr
08-Dec
13-14
None of the above

Q.8

Error detecting code is

an error-detecting code based on a summation operation performed on the bits to be checked
a check bit appended to an array of binary digits to make the sum of all the binary digits.
a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
the ratio of the data units in error to the total number of data units
None of the above

Q.9

Which of the following digits are known as the area code of the Network User Address (NUA)?

05-Jul
01-Apr
08-Dec
13-14
None of the above

Q.10

End-to-end connectivity is provided from host-to-host in:

Network layer
Session layer
Data link layer
Transport layer
None of the above

Q.11

ARP (Address Resolution Protocol) is

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
a protocol used to monitor computers
a protocol that handles error and control messages
None of the above

Q.12

Which of the following uses network address translation?

Routers
Network adapter drivers
Hubs
Windows 95
None of the above

Q.13

The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as

148.20.2.30
164.100.9.61
210.20.2.64
128.10.2.30
None of the above

Q.14

Which of the following items is not used in Local Area Networks (LANs)?

Computer
Modem
Printer
Cable
None of the above

Q.15

Which of the following is not a standard synchronous communication protocol?

SDLC
SMTP
SLIP
PAS
None of the above

Q.16

The network layer, in reference to the OSI model, provide

data link procedures that provide for the exchange of data via frames that can be sent and received
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service
All of the above
None of the above

Q.17

A modulator converts a _ signal to a(n) _ signal.

FSK; PSK
PSK; FSK
analog; digital
digital; analog
None of the above

Q.18

The birthplace of the World Wide Web is considered to be

the Department of Defense
CERN
ARPA
Netscape
None of the above

Q.19

The X.25 standard specifies a

technique for start-stop data
technique for dial access
DTE/DCE interface
data bit rate
None of the above

Q.20

Error detection at a data link level is achieved by

bit stuffing
cyclic redundancy codes
Hamming codes
equalization
None of the above

Q.21

In OSI network architecture, the routing is performed by

network layer
data link layer
transport layer
session layer
None of the above

Q.22

You have purchased a MAU (Multistation Access Unit) from your computer supplier and now must decide what type of network card you should install in the workstations. Which of the following would be the most appropriate?

Fast SCSI Wide
Token-Ring
ArcServe
Ethernet
None of the above

Q.23

The modern enterprise is interconnected internally and externally by the Internet, intranets, and other networks. Select the best fit for answer:

Internetworked enterprise
Information super highway
Business applications of telecommunications
Client/Server networks
None of the above

Q.24

The data communication support should include, but is not restricted to

file transfer and transaction processing
file and database access
terminal support, electronic mail and voice grams.
All of the above

Q.25

Data communications monitors available on the software market include

ENVIRON/1
TOTAL
BPL
Telenet
None of the above

Q.26

Which of the following statement is correct?

A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientati
A spin stabilized satellite uses solar panels whose cells are continually oriented toward the sun
Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.
satellite transponders use a single frequency for reception and transmission from one point on earth to another
None of the above

Q.27

Which of the following network access standard is used for connecting stations to a packet-switched network?

X.3
X.21
X.25
X.75
None of the above

Q.28

Interconnected networks need communication processors such as switches, routers, hubs, and gateways. Select the best fit for answer:

TCP/IP
Protocol
Open Systems
Internetwork processor

Q.29

MAC is

a method of determining which device has access to the transmission medium at any time
a method access control technique or multiple-access transmission media
a very common bit-oriented data link protocol issued to ISO.
network access standard for connecting stations to a circuit-switched network
None of the above

Q.30

What is the name of the device that converts computer output into a form that can be transmitted over a telephone line?

Teleport
Modem
Multiplexer
Concentrator
None of the above