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NCTI 3 to 4 Practice Examination Questions With Correct Answers 2023
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NCTI 3 to 4 Practice ExaminationQuestions With Correct Answers 2023
The Open Systems Interconnection reference model (OSI/RM) Network Layer serves
which primary purpose? - AnswerIt uses Layer 3 addresses to create multiple routed
networks.
The address 68.56.189.17 belongs to which Internet protocol (IP) class? - AnswerClass
A
What happens to a datagram sent by a higher level protocol to a 127.x.y.z address? -
AnswerThe datagram loops back inside the host and never leaves the network interface
card (NIC).
Which device evaluates and acts upon a packet's Internet protocol (IP) address? -
AnswerRouter.
The Network Layer must do what to a received frame first, in order to determine the
route over which it will forward the datagram to the next network? - AnswerDecapsulate
the packet.
What network information can be determined from a logical Internet protocol (IP)
address? - AnswerThe host portion and network portion.
The physical address of a device is processed by which layer of the Open Systems
Interconnection reference model (OSI/RM)? - AnswerThe Data Link Layer.
Which layer of the Open Systems Interconnection reference model (OSI/RM) would you
suspect as being the problem when packets are arriving at the server but no information
is being returned to the client? - AnswerThe Transport Layer.
All computers running on the transmission control protocol/Internet protocol (TCP/IP)
suite have which of the following in common? - AnswerEach computer is assigned its
own Internet protocol (IP) address.
A repeater operates at which layer of the Open Systems Interconnection reference
model (OSI/RM)? - AnswerThe Physical Layer.
Which one of the following protocols allows email clients to download their messages
from an email server? - AnswerPost Office Protocol version 3 (POP3).
Hypertext transfer protocol (HTTP) is what type of protocol? - AnswerStateless.
, On the file transfer protocol (FTP) server, what manages client requests for file retrieval
or transmission? - AnswerA daemon.
What are the primary requirements to connect to a transmission control protocol/Internet
protocol (TCP/IP) network? - AnswerUnique pairs of Network Layer and Transport
Layer addresses and use of the TCP/IP protocol suite.
What type of delivery method uses an email server between the sender and the receiver
of messages? - AnswerStore-and-forward.
Host names and uniform resource locators (URL) are resolved to Internet protocol (IP)
addresses by which of the following applications? - AnswerDomain Name System
(DNS).
What happens when the browser application finishes downloading the files necessary to
display a web page? - AnswerThe browser and server drop the connections, and the
browser maintains the page and its elements in local memory.
Which email protocol enables the messages to be viewed without first downloading
them from the email server? - AnswerInternet Message Access Protocol version 4
(IMAP4).
What type of server maintains an access log to assist with troubleshooting and tracking
down malicious users? - AnswerA file transfer protocol (FTP) server.
A store-and-forward email system will not deliver messages until: - AnswerThe host
requests the information.
What is the binary equivalent of decimal 136? - Answer10001000.
Convert the Internet protocol (IP) address 172.68.10.2 from decimal to binary: -
Answer10101100.01000100.00001010.00000010.
Convert the binary Internet protocol (IP) address
01110011.11001000.00101100.00000010 to decimal: - Answer115.200.44.2.
Which is the result of ANDing the Internet protocol (IP) address 23.176.224.18 with the
subnet mask 255.224.0.0? - Answer23.160.0.0.
Which represents the prefix bits for the subnet mask 255.255.0.0? - Answer/16.
If we borrow 3 bits from a Class C network address, how many useable subnets have
we created? - Answer8.
What isolates an Internet protocol (IP) address's network portion from its host portion? -
AnswerA network mask.
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