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NCTI exam 2023 with 100% correct answers
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NCTI 4 to 5What term describes the number of wave crests that pass a fixed point during a particular period of
time? - correct answerFrequency
In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously".
- correct answerHalf-duplex
Two CPUs have the same size data bus. Which one will process data faster? - correct answerThe one
with a higher clock speed
This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used
by only one network interface card anywhere in the world. - correct answerMedia access control
address (MAC)
Which is a network management and utility software that is typically used by network administrators
and information systems personnel when the network is unused or lightly used, often in the middle of
the night? - correct answerBackup and recovery utilities.
Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding
as well as an additional copper mesh shield? - correct answer10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a repeater? - correct
answer100 m
When light travels through a fiber-optic cable, the change in refractive index causes the light to refract
off which of the following? - correct answerThe boundary between the core and the cladding
Which of the following requires a laser transmitter? - correct answerSingle-mode fiber
In what part of a building would you typically find punch-down blocks? - correct answerWiring closet
, Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic
techniques used whenever different layers of protocols work together. What is the fourth? - correct
answerSegmentation
Which type of address is unique anywhere in the world? - correct answerNIC address
Which layer of the OSI protocol stack handles frames? - correct answerData Link
Which of the following best represents a logical address? - correct answerIPv6
In data networking, ________ describes the characteristics of a transmission link, such as throughput,
setup time, or accuracy. - correct answerQuality of service (QoS)
Transport layer processes work with transmission channels using multiplexing and ___________
techniques. - correct answerParallelization
Which of the following protocols is commonly used in the Session Layer? - correct answerAdvanced
Program-to-Program Communications (APPC)
What is the binary equivalent to the decimal number "14"? - correct answer0000 1110
Data security, data compression, and ________ are the three main services that the Presentation Layer
provides. - correct answerData representation
Which of the following is an example of a Transport Layer protocol? - correct answerTransmission
Control Protocol (TCP)
Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following? -
correct answerAn informal conversation in which each person speaks when the opportunity presents
itself, but only one person speaks at any time
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