ncti actual questions and answers with complete solutions
ncti
the open source interconnection reference model osirm network layer servers which primary purpose
the address 68 56 189 17 belongs
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NCTI Actual Questions and Answers
with Complete Solutions
The open source interconnection reference model (OSI/RM) Network layer servers
which primary purpose? - Answer✅ It uses layer 3 addresses to create multiple
routed networks
The address 68. 56. 189. 17 belongs to which Internet protocol (IP) class? - Answer✅
Class A
What happens to a datagram sent by a higher level protocol to a 127.x.y.z address? -
Answer✅ The 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? -
Answer✅ Router
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? - Answer✅ Decapsulate
the packet
Which network information can be determined from a logical Internet protocol (IP)
address? - Answer✅ The 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)? - Answer✅ The 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? - Answer✅ The Transport Layer
All computers running on the transmission control protocol/Internet protocol (TCP/IP)
suite have which of the following in common? - Answer✅ Each computer is assigned
its own internet protocol (IP) address
A repeater operates at which layer of the open systems interconnection reference
model (OSI/RM)? - Answer✅ The physical layer
Which one of the following protocols allows email clients to download their messages
from an email server? - Answer✅ Post Office Protocol version 3 (POP3)
Hypertext transfer protocol (HTTP) is what type of protocol? - Answer✅ Stateless
, On the file transfer protocol (FTP) server, what manages client requests for file retrieval
or transmission? - Answer✅ A daemon
What are the primary requirements to connect to a transmission control protocol/
Internet protocol (TCP/IP) network? - Answer✅ Unique 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? - Answer✅ Store-and-forward
Host names and uniform resource locators (URL) are resolved to Internet protocol (IP)
addresses by which of the following application? - Answer✅ Domain Name System
(DNS)
What happens when the browser application finishes downloading the files necessary to
display a Web page? - Answer✅ The browser and server drop the connection, 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? - Answer✅ Internet Message Access Protocol 4 (IMAP4)
What type of server maintains an access log to assist with troubleshooting and tracking
down malicious users? - Answer✅ A file transfer protocol (FTP) server
A store-and-foward email system will not deliver messages until: - Answer✅ The host
request the information
What is the binary equivalent of the decimal 136 - Answer✅ 10001000
Convert the Internet protocol (IP) address 172. 68. 10. 2 from decimal to binary -
Answer✅ 10101100. 01000100. 00001010. 00000010
Convert the binary Internet protocol (IP) address 01110011. 11001000. 00101100.
00000010 to decimal - Answer✅ 115.200.44.2
Which is the result of ANDing the Internet protocol address 23. 176. 224. 18 with a
subnet mask 255. 224. 0. 0? - Answer✅ 23.160.0.0
Which represents the prefix bits for the subnet mask 255. 255. 0. 0? - Answer✅ /23
If we borrow 3 bits from a Class C network address, how many usable subnets have we
created? - Answer✅ 8
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