NCTI Final Exam Progression Field Tech III -
IV Final Latest Version 2023 2024 Questions
and Correct Answers
A repeater operates at which layer of the open systems interconnection reference
model (OSI/RM)? - Correct AnswerThe physical layer.
A router makes its packet forwarding decision based on what information? - Correct
AnswerThe routers routing table
A store and forward email system will not deliver messages until - Correct AnswerThe
host requests the information
All computers running on the transmission control protocol/internet protocol (TCP/IP)
suite have which of the following in common? - Correct AnswerEach computer is
assigned its own internet protocol (IP) address
At which point in the Dynamic Host Configuration Protocol (DHCP) lease dos the client
first attempt to renew its lease? - Correct Answer50%
By the time the message is transmitted across cable, where will you find an Internet
protocol (IP) packet? - Correct AnswerInside a frame.
Coarse wavelengh division multiplexing (CWDM) applications were expanded to
include use in large metropolitan networks, utilizing wavelengths in what band? -
Correct AnswerE-band
Convert the binary internet protocol (IP) address
01110011.11001000.00101100.00000010 to decimal. - Correct Answer115.200.44.2
Convert the internet protocol (IP) address 172.68.10.2 from decimal to binary. - Correct
Answer10101100.01000100.00001010.000000010
Devices connected to hub share the same: - Correct AnswerCollision domain
Distance Vector Algorithms (DVA) operate in wihch manner? - Correct AnswerThey
advertise their routing tables directly to directly connected neighbor routers.
For Dynamic Host Configuration Protocol (DHCP) , what are the hosts requesting and
supplying the configuration parameters called? - Correct AnswerThe client request
parameters and the server provides the parameters
Host names and uniform resource locators (URL) are resolved to internet protocol (IP)
addresses by which of the following? - Correct AnswerDomain Name System (DNS)
, How are store and forward Ethernet switches different from cut through switches? -
Correct AnswerStore and forward switches are more accurate, but cut through switches
are faster.
How does frequency division multiplexing (FDM) enable multiple signals to share a
common medium - Correct AnswerBy assigning each a specific frequency or band of
frequencies called a channel
How does IEEE 802.3 frame format differ from Ethernet version 2 frame format? -
Correct AnswerThe type field is replaced by the length field.
How would an operator find a list of options available for the ping utility? - Correct
Answertype "ping" from a command line
Hypertext transfer protocol (HTTP) is what type of protocol? - Correct AnswerStateless
if we borrow 3 bits from a class C network address, how many usable subnets have we
created? - Correct Answer8
In a network mask address, what identifies the network and host portions of the
address? - Correct AnswerThe network portion of the net mask is set to all ones, and
the host is set to all zeros
in a synchronous optical network (SONET) what is the basis building block having a
data transmission rate of 51.85 Mbps? - Correct AnswerThe synchronous transport
signal (STS) frame
In simple network management protocol (SNMP), when do passive management
agents take action on their own initiative? - Correct Answerwhen certain well-defined
error conditions occur the generate an unsolicited message called a trap.
In the five layer hierarchy of Apple's operating systems, Mac OS X/macOs, which layer
is most complex? - Correct AnswerLayer five, the application layer containing Cocoa
and Carbon.
In what type of installation is wide wavelengh division multiplexing (WWDM) used? -
Correct AnswerIt is used in passive optical networks (PON)
Internet Protocol (IP) and x.25 are considered to be which of the following? - Correct
AnswerProtocols for the network layer.
Ipconfig displays which of the following elements of client configuration information? -
Correct AnswerDefault gateway
Layer 3 switches do a good job of containing which of the following? - Correct
AnswerBroadcasts
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