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NCTI 4 to 5: Q’s & A’s
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NCTI 4 to 5: Q’s & A’sWhat term describes the number of wave crests that pass a fixed point during
a particular period of time? Correct Ans - Frequency
In data networking, this term is defined as "Signals may flow in either
direction, but not simultaneously". Correct Ans - Half-duplex
Two CPUs have the same size data bus. Which one will process data faster?
Correct Ans - The 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 Ans - Media 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
Ans - Backup 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 Ans - 10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length
without a repeater? Correct Ans - 100 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 Ans - The
boundary between the core and the cladding
Which of the following requires a laser transmitter? Correct Ans -
Single-mode fiber
In what part of a building would you typically find punch-down blocks?
Correct Ans - Wiring 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 Ans - Segmentation
Which type of address is unique anywhere in the world? Correct Ans -
NIC address
Which layer of the OSI protocol stack handles frames? Correct Ans -
Data Link
Which of the following best represents a logical address? Correct Ans -
IPv6
In data networking, ________ describes the characteristics of a transmission
link, such as throughput, setup time, or accuracy. Correct Ans - Quality
of service (QoS)
Transport layer processes work with transmission channels using
multiplexing and ___________ techniques. Correct Ans - Parallelization
Which of the following protocols is commonly used in the Session Layer?
Correct Ans - Advanced Program-to-Program Communications (APPC)
What is the binary equivalent to the decimal number "14"? Correct Ans -
0000 1110
Data security, data compression, and ________ are the three main services that
the Presentation Layer provides. Correct Ans - Data representation
Which of the following is an example of a Transport Layer protocol?
Correct Ans - Transmission Control Protocol (TCP)
Carrier sense multiple access with collision detection (CSMA/CD) is most like
which of the following? Correct Ans - An informal conversation in
which each person speaks when the opportunity presents itself, but only one
person speaks at any time
The IEEE 802.3 standard defines which of the following? Correct Ans -
Ethernet
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