path fixer
circuit switched service
data switcher service
one way switcher
2. when data is sent through a mesh of networks it is
simplex transmission
decoder
packet switched service
demultiplexer
3. a pre-difine path in a network of switches is called
virtual circuit
circuit switched service
circuit indicator
multiplexer
4. when two remote lans are connected on a continuous basis it is called
bus topology
TCP/IP
asynchronomous network
permanent virtual circuit
5. the most common packet switched service which routes data through a mess of networks
ISDN
internet protocol
frame relay
time division multiplexing
6. based on the american wire gauge (AWG) the greater the wire gauge the_____the cable's diameter
smaller
bigger
larger
shorter
based on the american wire gauge (AWG) the greater the wire diameter the_____the cable's resistance
smaller
bigger
larger
shorter
7. what kind of memory needs to be refreshed
SDRAM
Dynamic RAM
ROM
CDROM
8. integrated circuits (ICs) on a circuit board that store memory are
DIPS
SIMMS
SIPP
all of the above
9. static memory/dynamic ram is
ROM memory
LR memory
cache memory
slow memory
10. a modulator whcih produces sidebands without a carrier is called?
bit modulator
widband modulator
CODE modulator
balanced modulator
11. bit pattern received is easily recognized and detected according to difined
(ALGORITHIM) this is called
analyzing
measuring
encoding
multiplying
12. the rate of transmitting bits is called the
bits per second rate
baud rate
parity rate
digital rate
13. a modulator/demodultor is called a
modem
copy machine
monitor
printer
14. frequencies shift keying used two distinct frequencies
2800 Hz and 300Hz
28Kz and 300Hz
2800Hz and 3000Hz
28000Hz and 300Hz
15. a mixer recording information from the sidebands is called a DEMODULATOR and this type is called
MODEM
amplitude modulation
multiplexing demodulation
time frequency modulation
16. 100Kz frequency is also called
T-1 frequency
FRAME RELAY
ISDN
Carrier frequency
17. what restores a signal back to form.
repeators
regenarators
amplifiers
all of the above
18. what is the term used for several bits
bytes
binary
digits
none of the obove
19. the smallest piece of data is called a
byte
zero
one
bit
20. low pas filter consist of two components
voltage and amps
impendance and resistance
sinwave and frequency
resistor and capacitor
21. what is the larget network
LAN
INTERNET
WAN
Telephone system
22. the cutoff frequency where power is down 50% or at -3db is called the
critical frequency
critical farads
half critical
none of the obove
23. the operation that BIOS and DOS is called
WINDWODS
fragmentation
format
Bootstrap loader
24. a standard printer is called
HP interface
centronic interface
interface printer
centronic profile
25. connecting computers is called
networking
multiplexing
time division
topology
a STAR BUS is a
physical topology
transportation bus
five computers only in a network
none of the obove
a RING BUS is a
round network
electrical bus
multi-user bus
electrical bus
26. what are common forms of error detectors
parity
security
checksum
ERRCHK
27. the connection a bride makes with a network is called a
port
bus
male connector
husband
28. the 80286 CHIP can operate in two modes, which are called
virtual mode, real mode
secure mode, virtual mode
CODE mode, internet mode
real mode, protected mode
29. what is the process of converting from binary to decimal called
hex
decoder
digitalizer
converter
30. what takes parallel data from a computer and sends it out in serial form over long distance
UART
ESD
TLP
LAN
31. the terminating set converting 2 wire to 4 wire connections is called
multiplexing
digital converter
bybrid
two way process
32. what is a test set that sends out a signal that contains all frequency in B.W.
translator
time domain meter
sweep generator
logic probe
33. waht monitors and records logic levels and plays them back
sweep generator
logic analyzer
logic probe
TDR
34. what is a test instrument that measures high/low pulse signals
spectrum analyzer
logic probe
logic analyzer
logic instrument
35. oscillator with a stable state, the output switches rapidly from one state to other
stable multiplexer
spectrum analyzer
hydrometer
stable multivibrator
36. when measuring from one point to other is called
TPL
TLP
PLT
LTP
a reference point is called.
OTPL
OTLP
OPLT
OLTP
37. lacking a regular start stop is called
asynchronous
synchronous
two way signaling
one way signaling
38. same time clock intervals is called
asynchronous
synchronous
two way signaling
one way signaling
39. what converts analog to digital and requires a large B.W.
MODEM
DIGITAL converter
ANALOG converter
PULSE CODE MODULATION
40. all servers on the internet use common communications protocol called
ethernet/IT
internet/LAN
TCP/IP
DNS/IT
41. what displays amplitude versus frequency
digital analyzer
spectrum analyzer
probe analyzer
all of the above
42. what is used to measure the specific gravitiy
voltmeter
altimeter
hydrometer
gravimeter
43. what do you call a variable resistor
selectometer
potentiometer
altimameter
potentialmeter
44. what device combines several lower bandwidth signals into larger bandwidth signals
time division multiplier
demultiplexer
varactor
multiplexer
45. what is a circuit amplifier
buffer
1.544 Mb/s
wave circuit layout
none of the above
46. what is measure in inductance
ohms
farads
henrys
amps
47. the standard bandwidth of a voice channel is
300Kz-4300Kz
3Kz-4000Mz
300Hz-3400Hz
all of the above
48. Capacitance is measured in
ohms
farads
henrys
amps
49. a device that switches a single input to one of several outputs is called a
demultiplexer
multiplexer
analyzer
spectrum analyzer
50. what circuit is used to hold or store binary numbers
flip-flop
CSMA/CD
RDX
TXD
51. what type of wave is easier to filter
sinewave
halfwave
fullwave
mediumwave
52. which component is used as a variable capacitor
multiplexer
pontentiometer
varactor
fretator
53. which diode is used for voltage regulator
LED
ZENER
TDG
OLZAR
54. what type of wire is used to reduce skin effect
FDD
twisted pair
coaxial cable
fiber
55. total ohms in an AC circuit is called
capacitance
inductdance
circuitdance
impedance
56. what is used to analyze digital signals
o-scope
d-scope
l-scope
a-scope
57. what BUS is Bi-directional
SCSII
SCSI
DATA BUS
Digital BUS
58. a network that compensates for distortions, it also counter acts envelope delay disctortion is a
delayer
delay field
delay equalizer
delay modulator
59. what is a rotating machine that converts mechanical energy to electrical energy
generator
tranformer
transponder
capacitor
60. what is the lowest level of switching in the public phone system
POTS (plain old telephone systme)
CO (central office)
RBOC (regional bell operating company)
LEC (local exchange carrier)
61. which pulse mat requires the lowest bandwidth
LANI
DIGITAL PULSE
BAMI
FDM
62. the frequency and voltage used to fing signal is
20Hz, 95V
20Hz, -6V
20Hz, 12V
20Hz, 120V
63. the process of putting many voice channels on one carrier with each channel at different frequency is
TDM
FDM
BAMI
TDP
64. what is that data rate of a T-1
1.544Kb/s
51.8Kb/s
1.544Gb/s
none of the above
65. the subscriver loop is part of the
demarcation point
local loop
lineside interface
loop interface
66. what can overcome line loss
routers
repeater
gateways
all of the above
67. what type of signal is off hook
open
closed
supervisory
superlinery
68. how does a PBX signal a request for service.
negative signal interface
pulse code modulation
access leased line per channel
ground start grounding the e-line
69. the PBX system which used 8 wires is referred to as
ear mouth interface
local 8 channle interface
byte interface
all of the above
70. what is used to rid the phone line of echo
echo suppressor
echo canceller
echo eliminators
echo compressor
71. what size bits is used in phone system to digitize voice grade cahnnels
8
4
12
1
72. what separates a customer wiring from the phone company's wiring
local loop
customer loop
demarcation point
demarcation loop
73. what are the different types of expansion cards
ISA
AT
ESIA
all of the above
74. what operating systme is both multi-user and multitaksing
WINDOWS
DOS
NOVELL
none of the above
75. what microprocessor processes and transfers data at the same time and supports a 32 bits at at time
80336
80236
80326
80226
76. what processor is required to run windows in enhanced mode
80336
80236
80326
80226
77. what are the different types of PDN services
frame relay
x.25
ATM
ISDN
all of the above
78. what type of cable acces method does ETHERNET 10-BASE 5 use
coaxial cable
CSMA/CD
FDD
twisted pair
79. the different types of alarms are
LOS
LOF
OOF
all of the above
80. what are the serial ports on a PC called
COM
ROM
SDRAM
RAM
81. a video standard for VGA is
640x480
100x100
64x48
6400x48
82. the different hard disk drive are
IDE
PIX
FDD
SCSI
all of the above
83. which open system interconnected layer starts the segmenting process
fragmentations
partitioning
transport
download
84. what is the transmission rate of a sonet operating at and OC-1 level
51.8Mb/s
51.8Kb/s
1.544Mb/s
1.544Kb/s
85. what type of cable is used in a sonet network
FDD
CSMA/CD
coaxial cable
fiber
86. Resistance in a wire is effected by what
Length and material diameter
load and current
ohms
none of the above
87. what is the most common fix
power off
pewer on
booting up
power off/on
88. what prevents ICs from blowing out
ESD
surge protectors
LESDT
none of the above
89. what is a clipboard
paste
cut
copy
cut/paste
90. inferface between a modem and a computer is called
RS232
RL232
SR232
RLS23
91. what is running DOS and Windows simultaneously is called
real mode
virtual mode
safe mode
none of the above
92. what are mode device statements and device drivers
AUTOEXE.COM
CONFIG.SYS
A/ DRIVE
C/ DRIVE
93. what is a voice channel that has its own circuitry to connect between analog and digital
decoder
codec's coder
both
none
94. baterry power to operate is
-48V
48V
+48V
48Hz
95. to set up the specific format in HDD is
R/W codec
float voltage
partitions
disc space
96. a capacitor is made up of two conductive plates separated by_____insulator
water
acid
metal
dielectric
97. if requecy in a capacitate circuit decreases, what happens to the current
increases
decreases
stays the same
shuts off
98. the smallest voltage change a binary number can represent is called
byte
bit
0
resolution
99. microwave repeators ae generally spaced about how many miles apart
50-60
30-20
10-20
30-10
100. what is an instrument that measures temperature over wide range
hydrometer
thermometer
pyrometer
tipometer
101. what amplify up-link satellite signal and converts to down link signal
transformer
transponder
altiponder
ultraformer
102. repeators are used to overcome
cost
line loss
land use
wire use
103. what sample rate is used to convert a voice grade signal to a digital signal in the telephone system
8 bites
7 bytes
8000 b/s
none
104. what is the most common form of address signaling
DTS
DTMF
ISDN
POTS
105. a voice being heard on another phone line is called
singal loss
crosstalk
crosslistenning
weak signal gain
106. a digital signal is transmitted in a B8ZS is defined as
bipolar, 8 Bits
107. what is the faster component is a computer
CPU
hard drive
MODEM
CD driver
108. how much CACHE memory is on a 486DX microprcessor
8MB
16MB
32MB
64MB
109. an EMS Board is an
Emergency Memory System
External Memory
Exteded Memory
ExtaModule Sicurity
110. which of the following is a DOS Command interpreter.
AUTOEXEC.BAT
CONFIG.SYS
COMMAND.COM
NONE
111. the file that sets up the characteristics of a PC. customizes the display and start applications is called
AUTOEXEC.BAT
CONFIG.SYS
COMMAND.COM
NONE
112. Of the PDN Service before, which one provides extensive error checking
ISDN
POTS
FRAME RELAY
x.25
113. how many voice grade channels are in a jumbo group.
3600
3800
6
24
114. the unix sign is used to identify a comment
$
#
/
|
115. which is the correct MS-DOS Command
\
/
both
none
which is the correct UNIX command
\
/
both
none
116. what is the interrupt code IRQ for COMI on a PC
4
6
8
12
117. the following devices si NOT used to connect subnets
bridges
LANS
routers
gateways
118. what is the data rate for ISDN Basic Rate Interface
2-16 Kb/s
1-65 Kb/s
a &b
none
119. a device used to represent a number of accurances of an event is know as a
clock
code
counter
signal
120. what procedure sets the boundries of the operating system to work with in
partitioning
formating
fragmantation
disc space
121. the category of cell, which CANNOT be recharge is
primary cell
secondary cell
both
none
122. the category of cell, which CAN be recharge is
primary cell
secondary cell
both
none
123. the voltage applied to a battery keeping it fully charge is
voltage regulator
float voltage
minimal voltage
low voltage
124. ELI= volts leads current in
inductor
conductor
capacitor
resistor
125. ICE= current leads volts in
inductor
conductor
capacitor
resistor
126. which is not a positive metric prefix
K kilo
n nano
M mega
G giga
which is not a negative metric prefix
m mega
u mirco
m milli
n nano
127. transmission measuring test sets always contain
voltage pads
resistor pads
attenuation pads
impendance pads
128. what is two way simultaneous conversation
half duplex
simplex
duplex
full duplex
129. the primary purpose of return/loss measurements is to determine what
the sinal ration
the signal to noise loss
frequency to current ratio
none
130. telephone circuit with continued whistle/howl due to reapeator gain/losses
crossing on a circuit
local loop
signing on a circuit
talking on a circuit
131. what is microwave adavantage
bandwidth
fiber optic capabilities
longer distances
long haul wireless application
132. what is satellite advantage
broadcast range
distance range
bandwidth range
lower cost
133. what is volatile memory
RAM
ROM
EXTENDED MEMORY
NONE
134. what type of memory is non-volatile
RAM
ROM
EXTENDED MEMORY
NONE
135. what color is used to indicate the high voltage line on a standard wall outlet
green
black
white
red
136. a frame is how many channels
24
64
12
T3
137. what is the opposite of inductor
reactance
impedance
capacitance
inductance
138. binary number are used to represent data the most common code for information interchange is
ASCII
ASCCI
DELL
EEEIII
139. a logic probe is generally used to test
binary number
static circuit
1's and 0's
none
140. external equipment is reffered to as DCE, which means
data connection externally
dual-connection equipment
data communication equipment
none
141. the computer iitself is referred to as DTE, which means
data terminal equipment
dua-terminal equipment
data terminal externally
none
142. if tow DTE were connected with RS232 interface both would trasnmit on the __line and received on the ___line
TXD, LED
TXS, TXE
TXD,RDE
TXD,RXD
143. amplitude vs time is measured with a/ an
voltmeter
ampmeter
0-scope
spectrum analyzer
144. amplitude vs frquency is measured with a/ an
voltmeter
ampmeter
0-scope
spectrum analyzer
145. LED is sent down to the fiber sometimes the light is reflected back to the light sourcer and accounts for part of the cable losses this is called
backscatter
sidetracked
backtracked
signalloss
