IST 220 Final Exam 2026 Questions and
Answers
A hexadecimal number is a number written in the base 16 system. - Correct
answer-True
Convert the binary number of 11111111 to decimal number of - Correct answer-
255
Checks whether the data is received and resends if it is not - Correct answer-TCP
is called a connection-oriented protocol - Correct answer-TCP
is used by applications such as Web browsers and email - Correct answer-TCP
guarantees delivery - Correct answer-TCP
does not guarantee delivery - Correct answer-UDP
is called a connectionless protocol - Correct answer-UCP
is called a best-effort protocol - Correct answer-UCP
is used for broadcasting, such as streaming video or audio over the Web - Correct
answer-UDP
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,is used to monitor network traffic - Correct answer-UDP
is used when it is important to know that the data reached its destination - Correct
answer-TCP
What utility is used to verify that TCP/IP installed, bound to the NIC, configured
correctly, and communication with the Network? - Correct answer-Ping
The fundamental difference between a switch and a router is that a switch belongs
only to its local network and a router belongs to two or more local networks. -
Correct answer-True
A port number, which identifies an application on a host, exists at what level of the
OSI model? - Correct answer-Transport
Select the protocol below that is used to synchronized clocks on computers on a
network: - Correct answer-NTP
What mail protocol is used to send mail messages to a server? - Correct answer-
SMTP Simple Mail Transfer Protocol USES TCP port 25
The process of adding a header to the data inherited from the layer above is called
what? - Correct answer-encapsulation
At what layer of the OSI model do the IP, ICMP, and the ARP protocols operate -
Correct answer-Network
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,The Network layer header identifies sending and receiving hosts by their what? -
Correct answer-IP Address
Which of the following is NOT one of the disadvantages of peer-to-peer networks?
- Correct answer-The centralize user account logins
What range of ports is referred to as the "well-known" range of ports? - Correct
answer-0-1023
The segment or datagram protocol data unit exists at what layer of the OSI model?
- Correct answer-Transport Layer
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what
layer of the OSI model? - Correct answer-Layer 7
What command below can be used to display a complete summary of all network
interfaces in a Windows computer? - Correct answer-ipconfig /all
A loopback IP address begins with what number? - Correct answer-127
ISO is best known for its Open Systems Interconnection (OSI) reference model.
ISO stands for the what? - Correct answer-International Organization for
Standardization
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, Servers that have a NOS installed require less memory; processing power, and
storage capacity than clients because servers are called on to handle only light
processing loads and requests from multiple clients. - Correct answer-False
What is the name for the protocol data unit (PDU) of the Data Link layer? -
Correct answer-frame
220.45.67.8:80 - Correct answer-Socket
126.10.5.4 - Correct answer-Public Class A IP Address
172.16.0.14 - Correct answer-Private Class B IP Address
192.168.10.16 - Correct answer-Private Class C IP Address
182.45.62.8 - Correct answer-Public Class B IP Address
225.225.225.0 - Correct answer-Class D IP Address
10.12.4.78 - Correct answer-Private Class A IP Address
193.40.5.3 - Correct answer-Public Class C IP Address
What are the last two parts of a host name known as? - Correct answer-domain
name
An IPv6 address consists of how many bits? - Correct answer-128
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Answers
A hexadecimal number is a number written in the base 16 system. - Correct
answer-True
Convert the binary number of 11111111 to decimal number of - Correct answer-
255
Checks whether the data is received and resends if it is not - Correct answer-TCP
is called a connection-oriented protocol - Correct answer-TCP
is used by applications such as Web browsers and email - Correct answer-TCP
guarantees delivery - Correct answer-TCP
does not guarantee delivery - Correct answer-UDP
is called a connectionless protocol - Correct answer-UCP
is called a best-effort protocol - Correct answer-UCP
is used for broadcasting, such as streaming video or audio over the Web - Correct
answer-UDP
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,is used to monitor network traffic - Correct answer-UDP
is used when it is important to know that the data reached its destination - Correct
answer-TCP
What utility is used to verify that TCP/IP installed, bound to the NIC, configured
correctly, and communication with the Network? - Correct answer-Ping
The fundamental difference between a switch and a router is that a switch belongs
only to its local network and a router belongs to two or more local networks. -
Correct answer-True
A port number, which identifies an application on a host, exists at what level of the
OSI model? - Correct answer-Transport
Select the protocol below that is used to synchronized clocks on computers on a
network: - Correct answer-NTP
What mail protocol is used to send mail messages to a server? - Correct answer-
SMTP Simple Mail Transfer Protocol USES TCP port 25
The process of adding a header to the data inherited from the layer above is called
what? - Correct answer-encapsulation
At what layer of the OSI model do the IP, ICMP, and the ARP protocols operate -
Correct answer-Network
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,The Network layer header identifies sending and receiving hosts by their what? -
Correct answer-IP Address
Which of the following is NOT one of the disadvantages of peer-to-peer networks?
- Correct answer-The centralize user account logins
What range of ports is referred to as the "well-known" range of ports? - Correct
answer-0-1023
The segment or datagram protocol data unit exists at what layer of the OSI model?
- Correct answer-Transport Layer
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what
layer of the OSI model? - Correct answer-Layer 7
What command below can be used to display a complete summary of all network
interfaces in a Windows computer? - Correct answer-ipconfig /all
A loopback IP address begins with what number? - Correct answer-127
ISO is best known for its Open Systems Interconnection (OSI) reference model.
ISO stands for the what? - Correct answer-International Organization for
Standardization
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, Servers that have a NOS installed require less memory; processing power, and
storage capacity than clients because servers are called on to handle only light
processing loads and requests from multiple clients. - Correct answer-False
What is the name for the protocol data unit (PDU) of the Data Link layer? -
Correct answer-frame
220.45.67.8:80 - Correct answer-Socket
126.10.5.4 - Correct answer-Public Class A IP Address
172.16.0.14 - Correct answer-Private Class B IP Address
192.168.10.16 - Correct answer-Private Class C IP Address
182.45.62.8 - Correct answer-Public Class B IP Address
225.225.225.0 - Correct answer-Class D IP Address
10.12.4.78 - Correct answer-Private Class A IP Address
193.40.5.3 - Correct answer-Public Class C IP Address
What are the last two parts of a host name known as? - Correct answer-domain
name
An IPv6 address consists of how many bits? - Correct answer-128
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
