Master Common Application Layer Protocols: HTTP, FTP, SMTP, DNS

Question 1

Which protocol is specifically designed for the transmission of electronic mail?

Accepted Answer

SMTP

Answer

HTTP

Answer

FTP

Answer

DNS

Question 2

Which application layer protocol is primarily used for transferring files across a network?

Accepted Answer

FTP

Answer

HTTP

Answer

SMTP

Answer

DNS

Question 3

Which application layer protocol is designed to provide secure communication by encrypting data during transmission?

Accepted Answer

HTTPS

Answer

HTTP

Answer

SMTP

Answer

DNS

Question 4

Which of the following is NOT a common application layer protocol used in network communication?

Accepted Answer

ARP

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 5

Which protocol is primarily responsible for transferring web pages and other multimedia content over the Internet?

Accepted Answer

HTTP

Answer

FTP

Answer

SMTP

Answer

DNS

Question 6

What is the primary purpose of the File Transfer Protocol (FTP)?

Accepted Answer

To facilitate remote file transfer and management

Answer

To send and receive electronic mail

Answer

To translate domain names into IP addresses

Answer

To establish and manage network connections

Question 7

Which of the following is NOT a characteristic of SMTP?

Accepted Answer

It offers end-to-end encryption for secure email delivery

Answer

It uses port 25 by default

Answer

It supports both text and multimedia attachments

Answer

It is a push protocol

Question 8

What is the primary role of the Domain Name System (DNS) in network communication?

Accepted Answer

To translate domain names into IP addresses

Answer

To manage email delivery

Answer

To provide network security

Answer

To facilitate file sharing

Question 9

Which HTTP status code indicates that the requested resource was found and returned successfully?

Accepted Answer

200

Answer

404

Answer

500

Answer

302

Question 10

What is the purpose of using passive mode in FTP?

Accepted Answer

To simplify firewall configuration

Answer

To enhance security by preventing unauthorized access

Answer

To improve data transfer speed

Answer

To reduce network overhead

Question 11

What is the purpose of the MX record in DNS?

Accepted Answer

To specify the mail server responsible for handling email for a domain

Answer

To resolve domain names to IP addresses

Answer

To prevent email spam and phishing

Answer

To manage network configurations

Question 12

Which of the following is a valid HTTP method used to retrieve data from a server?

Accepted Answer

GET

Answer

POST

Answer

DELETE

Answer

UPDATE

Question 13

Which DNS record type specifies the mail server that handles email for a particular domain?

Accepted Answer

MX

Answer

A

Answer

CNAME

Answer

NS

Question 14

Which application layer protocol is used to transfer hypertext documents and other web content?

Accepted Answer

HTTP

Answer

DNS

Answer

SMTP

Answer

FTP

Question 15

Which protocol facilitates the transfer of files between a remote server and a local computer?

Accepted Answer

FTP

Answer

HTTP

Answer

DNS

Answer

SMTP

Question 16

Which application layer protocol is primarily responsible for sending and receiving electronic mail messages?

Accepted Answer

SMTP

Answer

FTP

Answer

HTTP

Answer

DNS

Question 17

At which layer of the TCP/IP reference model does HTTP operate?

Accepted Answer

Application Layer

Answer

Data Link Layer

Answer

Transport Layer

Answer

Network Layer

Question 18

Which header field in an SMTP message specifies the sender's email address?

Accepted Answer

From

Answer

Subject

Answer

To

Answer

Body

Question 19

Which DNS record type is used to map a hostname to an IPv4 address?

Accepted Answer

A record

Answer

CNAME record

Answer

MX record

Answer

AAAA record

Question 20

Which application layer protocol is used for secure web communication?

Accepted Answer

HTTPS

Answer

FTP

Answer

SMTP

Answer

HTTP

Question 21

Which characteristic does NOT apply to the Transmission Control Protocol (TCP)?

Accepted Answer

Connectionless

Answer

Flow-controlled

Answer

Reliable

Answer

Full-duplex

Question 22

Which protocol is primarily used for transferring files between a client and a server?

Accepted Answer

FTP (File Transfer Protocol)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

DNS (Domain Name System)

Answer

HTTP (Hypertext Transfer Protocol)

Question 23

What is the default port number associated with the HTTP protocol?

Accepted Answer

80

Answer

21

Answer

25

Answer

53

Question 24

A website is loading slowly. Which protocol is responsible for translating the website's domain name into its numerical IP address?

Accepted Answer

DNS (Domain Name System)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

FTP (File Transfer Protocol)

Question 25

Which of the following protocols relies on TCP for reliable data transmission?

Accepted Answer

FTP (File Transfer Protocol)

Answer

UDP (User Datagram Protocol)

Answer

ICMP (Internet Control Message Protocol)

Answer

IP (Internet Protocol)

Question 26

What is the primary function of the 'GET' method in HTTP?

Accepted Answer

To request data from a web server.

Answer

To resolve a domain name to an IP address.

Answer

To send data to a web server.

Answer

To establish a secure connection.

Question 27

Which protocol is primarily responsible for transferring email messages between email servers?

Accepted Answer

SMTP (Simple Mail Transfer Protocol)

Answer

POP3 (Post Office Protocol 3)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

IMAP (Internet Message Access Protocol)

Question 28

Which type of DNS record is used to map a domain name to an IPv6 address?

Accepted Answer

AAAA

Answer

A (Address)

Answer

MX (Mail Exchanger)

Answer

CNAME (Canonical Name)

Question 29

You need to securely transfer files between a client and a server. Which protocol is best suited for this task?

Accepted Answer

FTPS (File Transfer Protocol Secure)

Answer

Telnet

Answer

HTTP (Hypertext Transfer Protocol)

Answer

FTP (File Transfer Protocol)

Question 30

What is a key difference between HTTP and HTTPS?

Accepted Answer

HTTPS encrypts data transmission, providing a secure connection.

Answer

HTTPS is used for file transfers.

Answer

HTTPS uses a different port number.

Answer

HTTPS is faster than HTTP.

Question 31

A user wants to access their email securely. Which protocol would provide a secure connection for email access?

Accepted Answer

IMAPS (Internet Message Access Protocol Secure)

Answer

POP3 (Post Office Protocol 3)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

HTTP (Hypertext Transfer Protocol)