NCTI 4 to 5 ACTUAL EXAM QUESTIONS WITH
VERIFIED ANSWERS
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?
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?
10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a
repeater?
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?
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
The IEEE 802.3 standard defines which of the following?
Ethernet
VERIFIED ANSWERS
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?
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?
10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a
repeater?
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?
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
The IEEE 802.3 standard defines which of the following?
Ethernet
