NCTI TECH 4 TO 5 CH. TEST STUDY GUIDE
What happens when a router forwards data packets from one network to another network?
The destination address of the router in the framed packet is removed and the packet header address is inspected by the router to determine the next destination address to e...
NCTI TECH 4 TO 5 CH. TEST STUDY GUIDE
What happens when a router forwards data packets from one network to another network?
The destination address of the router in the framed packet is removed and the packet header address is
inspected by the router to determine the next destination address to encapsulate around the packet.*
________ allows network administrators to break up a single network address into smaller network
addresses, creating router-connected network segments, all with their own unique network address
space.
Subnetting**
What term describes the number of wave crests that pass a fixed point during a particular period of
time?
Frequency
In data networking, this term is defined as "Signals may flow in either direction, but not
simultaneously".
Half Duplex
Two CPUs have the same size data bus. Which one will process data faster?
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.
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?
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?
10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a repeater?
100m
When light travels through a fiber-optic cable, the change in refractive index causes the light to refract
off which of the following?
The boundary between the core and the cladding
Which of the following requires a laser transmitter?
, Single-mode fiber
In what part of a building would you typically find punch-down blocks?
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?
Segmentation
Which type of address is unique anywhere in the world?
NIC address
Which layer of the OSI protocol stack handles frames?
Data Link
Which of the following best represents a logical address?
IPv6
In data networking, ________ describes the characteristics of a transmission link, such as throughput,
setup time, or accuracy.
Quality of service (QoS)
Transport layer processes work with transmission channels using multiplexing and ___________
techniques.
Parallelization
Which of the following protocols is commonly used in the Session Layer?
Advanced Program-to-Program Communications (APPC)
What is the binary equivalent to the decimal number "14"?
0000 1110
Data security, data compression, and ________ are the three main services that the Presentation Layer
provides.
Data representation
Which of the following is an example of a Transport Layer protocol?
Transmission Control Protocol (TCP)
Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following?
An informal conversation in which each person speaks when the opportunity presents itself, but only one
person speaks at any time
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