IST 220 FINAL EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
A hexadecimal number is a number written in the base 16 system. - ANS True
Convert the binary number of 11111111 to decimal number of - ANS 255
Checks whether the data is received and resends if it is not - ANS TCP
is called a connection-oriented protocol - ANS TCP
is used by applications such as Web browsers and email - ANS TCP
guarantees delivery - ANS TCP
does not guarantee delivery - ANS UDP
is called a connectionless protocol - ANS UCP
is called a best-effort protocol - ANS UCP
is used for broadcasting, such as streaming video or audio over the Web - ANS UDP
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,is used to monitor network traffic - ANS UDP
is used when it is important to know that the data reached its destination - ANS TCP
What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and
communication with the Network? - ANS 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. - ANS True
A port number, which identifies an application on a host, exists at what level of the OSI model?
- ANS Transport
Select the protocol below that is used to synchronized clocks on computers on a network: -
ANS NTP
What mail protocol is used to send mail messages to a server? - ANS 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? -
ANS encapsulation
At what layer of the OSI model do the IP, ICMP, and the ARP protocols operate -
ANS Network
The Network layer header identifies sending and receiving hosts by their what? - ANS IP
Address
Which of the following is NOT one of the disadvantages of peer-to-peer networks? - ANS The
centralize user account logins
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What range of ports is referred to as the "well-known" range of ports? - ANS 0-1023
The segment or datagram protocol data unit exists at what layer of the OSI model? -
ANS Transport Layer
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the
OSI model? - ANS Layer 7
What command below can be used to display a complete summary of all network interfaces in
a Windows computer? - ANS ipconfig /all
A loopback IP address begins with what number? - ANS 127
ISO is best known for its Open Systems Interconnection (OSI) reference model. ISO stands for
the what? - ANS International Organization for Standardization
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. - ANS False
What is the name for the protocol data unit (PDU) of the Data Link layer? - ANS frame
220.45.67.8:80 - ANS Socket
126.10.5.4 - ANS Public Class A IP Address
172.16.0.14 - ANS Private Class B IP Address
192.168.10.16 - ANS Private Class C IP Address
pg. 3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS AND ANSWERS 100% PASS
A hexadecimal number is a number written in the base 16 system. - ANS True
Convert the binary number of 11111111 to decimal number of - ANS 255
Checks whether the data is received and resends if it is not - ANS TCP
is called a connection-oriented protocol - ANS TCP
is used by applications such as Web browsers and email - ANS TCP
guarantees delivery - ANS TCP
does not guarantee delivery - ANS UDP
is called a connectionless protocol - ANS UCP
is called a best-effort protocol - ANS UCP
is used for broadcasting, such as streaming video or audio over the Web - ANS UDP
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,is used to monitor network traffic - ANS UDP
is used when it is important to know that the data reached its destination - ANS TCP
What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and
communication with the Network? - ANS 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. - ANS True
A port number, which identifies an application on a host, exists at what level of the OSI model?
- ANS Transport
Select the protocol below that is used to synchronized clocks on computers on a network: -
ANS NTP
What mail protocol is used to send mail messages to a server? - ANS 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? -
ANS encapsulation
At what layer of the OSI model do the IP, ICMP, and the ARP protocols operate -
ANS Network
The Network layer header identifies sending and receiving hosts by their what? - ANS IP
Address
Which of the following is NOT one of the disadvantages of peer-to-peer networks? - ANS The
centralize user account logins
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What range of ports is referred to as the "well-known" range of ports? - ANS 0-1023
The segment or datagram protocol data unit exists at what layer of the OSI model? -
ANS Transport Layer
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the
OSI model? - ANS Layer 7
What command below can be used to display a complete summary of all network interfaces in
a Windows computer? - ANS ipconfig /all
A loopback IP address begins with what number? - ANS 127
ISO is best known for its Open Systems Interconnection (OSI) reference model. ISO stands for
the what? - ANS International Organization for Standardization
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. - ANS False
What is the name for the protocol data unit (PDU) of the Data Link layer? - ANS frame
220.45.67.8:80 - ANS Socket
126.10.5.4 - ANS Public Class A IP Address
172.16.0.14 - ANS Private Class B IP Address
192.168.10.16 - ANS Private Class C IP Address
pg. 3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
