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NCTI TECH 4 TO 5 CH Question and answers 2023 verified to pass
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NCTI TECH 4 TO 5 CH. TEST STUDYGUIDE
What term describes the number of wave crests that pass a fixed point during a
particular period of time? - correct answer Frequency
In data networking, this term is defined as "Signals may flow in either direction, but not
simultaneously". - correct answer Half Duplex
Two CPUs have the same size data bus. Which one will process data faster? - correct
answer 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 answer 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 answer Back up 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 answer
10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a
repeater? - correct answer 100m
When light travels through a fiber-optic cable, the change in refractive index causes the
light to refract off which of the following? - correct answer The boundary between the
core and the cladding
Which of the following requires a laser transmitter? - correct answer Single-mode fiber
In what part of a building would you typically find punch-down blocks? - correct answer
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 answer Segmentation
Which type of address is unique anywhere in the world? - correct answer NIC address
Which layer of the OSI protocol stack handles frames? - correct answer Data Link
, Which of the following best represents a logical address? - correct answer IPv6
In data networking, ________ describes the characteristics of a transmission link, such
as throughput, setup time, or accuracy. - correct answer Quality of service (QoS)
Transport layer processes work with transmission channels using multiplexing and
___________ techniques. - correct answer Parallelization
Which of the following protocols is commonly used in the Session Layer? - correct
answer Advanced Program-to-Program Communications (APPC)
What is the binary equivalent to the decimal number "14"? - correct answer 0000 1110
Data security, data compression, and ________ are the three main services that the
Presentation Layer provides. - correct answer Data representation
Which of the following is an example of a Transport Layer protocol? - correct answer
Transmission Control Protocol (TCP)
Carrier sense multiple access with collision detection (CSMA/CD) is most like which of
the following? - correct answer 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 answer Ethernet
What Fast Ethernet standard can send Ethernet frames at 100 Mbps over Category 5E
UTP or fiber optic cabling? - correct answer IEEE 802.3u
What enables the transport of computer data over analog telephone local loops? -
correct answer Telephone modems.
Which of the following describes the bandwidth of a single FT1? - correct answer 64
Kbps
How much bandwidth in a T1 circuit is allocated for control information? - correct
answer 8 Kbps.
What device is required to attach a non-ISDN device to an ISDN network? - correct
answer Terminal adaptor (TA)
Which of the following is a connection-oriented packet-switched network service that
works at the Data Link Layer? - correct answer X.25*
ATM*
SMDS*
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