Practice Test: Question Set - 08
1. What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?
- (A) Handshaking
- (B) Modem
options
- (C) Protocol
- (D) Duplexing
2. Which of the following is not a transmission medium?
- (A) Telephone
lines
- (B) Coaxial
cable
- (C) Modem
- (D) Microwave
systems
3. TCP is:
- (A) Operates at
the Data Link layer
- (B) Connection
orientated and unreliable
- (C) Connection
orientated and reliable
- (D) Connectionless
and unreliable
4. What does 224 translate to in binary?
- (A) 11110000
- (B) 00011110
- (C) 00001111
- (D) 11100000
5. What is the minimum number of wires needed to send data over a serial communication link layer?
- (A) 1
- (B) 2
- (C) 4
- (D) 6
6. You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports four subnets and a maximum number of hosts?
- (A) 255.255.255.192
- (B) 255.255.255.224
- (C) 255.255.255.240
- (D) 255.255.255.248
7. The coming together of three technologies i.e. microelectronics, computing and communications has ushered in
- (A) Information
explosion
- (B) Information
technology
- (C) Business
revolution
- (D) Educational
upgradation
8. RS-232-G
- (A) Is
an interface between two data circuit terminating equipment as examplified by a
local and remote modem
- (B) Is
an interface standard between Data terminal Equipment and Data Circuit
Terminating Equipment
- (C) Specifies
only the mechanical characteristics of an interface by providing a 25-pin
connector
- (D) Requires
only 7 pin out of 25 in order to transmit digital data over public telephone
lines
9. Computers in a LAN can be interconnected by radio and infrared technologies.
- (A) Wireless
LANs
- (B) Network
Topologies
- (C) Multiplexer
- (D) Modem
10. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:
- (A) Fiber optic
cables
- (B) Cellular
phone systems
- (C) Telecommunications
processors
- (D) Telecommunications
software
11. What operates in the Data Link and the Network layer?
- (A) NIC
- (B) Bridge
- (C) Brouter
- (D) Router
12. The transfer of data from a CPU to peripheral devices of a computer is achieved through
- (A) Modems
- (B) Computer
ports
- (C) Interfaces
- (D) Buffer
memory
13. What can cause a problem with communication with a client by name but not by IP address?
- (A) The IP
address
- (B) Static files
such as an LMHOSTS file or a DNS database
- (C) Subnet mask
- (D) The default
gateway
14. Packet Switch Stream (PSS) was introduced in
- (A) The US in
1961 (&) the UK in 1981
- (B) The UK in
1980
- (C) The US in
1961
- (D) None of the
above
15. The physical layer, in reference to the OSI model, defines
- (A) Data
link procedures that provide for the exchange of data via frames that can be
sent and received
- (B) The
interface between the X.25 network and packet mode device
- (C) The virtual
circuit interface to packet-switched service
- (D) All of the
above
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