Computer Network : Application Protocols (Test 1) : Free online Test by Teachexam

Question : What is the main disadvantage of HTTP compared to HTTPS?

Slower data transmission

Lack of encryption

Limited compatibility

Requires UDP protocol

Question : Which of the following correctly matches an HTTP status code category?

2xx – Client Error

3xx – Success

4xx – Client Error

5xx – Informational

Question : Which HTTP version introduced multiplexing and header compression for better performance?

HTTP/1.0

HTTP/1.1

HTTP/2

HTTP/3

Question : Why are cookies used in HTTP?

To encrypt data between client and server

To reduce bandwidth usage

To maintain session information across requests

To improve physical layer communication

Question : Which of the following correctly describes the working principle of HTTP?

Connection-oriented and stateful

Request-response and stateless

Peer-to-peer and stateful

Connectionless and stateful

Question : Which SNMP version provides authentication and encryption for secure communication?

SNMPv1

SNMPv2c

SNMPv2u

SNMPv3

Question : What is the primary function of the MIB (Management Information Base) in SNMP?

Encrypt network data

Store structured information about managed objects

Provide physical connectivity

Route packets across networks

Question : Which SNMP message type is used by an agent to notify the manager about an event without request?

GetRequest

SetRequest

GetResponse

Trap

Question : Which component in SNMP acts as a centralized control system for monitoring network devices?

Agent

MIB

Manager (NMS)

SMI

Question : SNMP is classified under which layer of the OSI model?

Transport Layer

Network Layer

Application Layer

Data Link Layer

Question : Which component in SMTP architecture is responsible for transferring emails between servers?

MUA (Mail User Agent)

MSA (Mail Submission Agent)

MTA (Mail Transfer Agent)

MDA (Mail Delivery Agent)

Question : Which port is commonly used for secure email submission with SMTP?

110

143

25

587

Question : In the store-and-forward method of SMTP, what happens when the recipient server is unavailable?

The email is deleted immediately

The email is returned to sender instantly

The email is stored and retried later

The email is converted into another protocol

Question : Which of the following SMTP commands is used to specify the recipient’s email address?

HELO

MAIL FROM

RCPT TO

DATA

Question : Which of the following correctly describes the primary function of SMTP?

Retrieving emails from the server

Sending and relaying emails between servers

Encrypting email messages

Storing emails permanently

Question : In Telnet communication, what is the role of the IAC (Interpret As Command) byte?

It encrypts the data stream

It indicates that the following data is a command

It terminates the connection

It identifies the port number

Question : Why is Telnet considered insecure in modern networks?

It uses too much bandwidth

It supports only LAN networks

It transmits data in plain text without encryption

It cannot connect to servers

Question : What is the main purpose of the Network Virtual Terminal (NVT) in Telnet?

Encrypt data during transmission

Provide a graphical interface

Standardize communication between different systems

Compress data packets

Question : Telnet mainly operates on which default port number?

21

22

23

25

Question : Which of the following best describes the primary function of Telnet?

File transfer between computers

Secure encrypted communication

Remote login to access a computer system

Email transmission

Question : In Passive Mode of FTP, who initiates the data connection?

Server initiates connection to client

Client initiates connection to server

Both initiate simultaneously

No connection is required

Question : Which of the following is a major security drawback of FTP?

High latency

Limited file size

Data is transmitted in plain text

Requires GUI interface

Question : Which port is primarily used for the FTP control connection?

20

21

22

80

Question : FTP uses two separate connections for communication. Which of the following is correct?

Control connection for data, data connection for commands

Both connections are used for commands only

Control connection for commands, data connection for file transfer

Only one connection is used

Question : Which of the following correctly describes the main function of FTP?

Encrypting data during transmission

Transferring files between client and server over TCP/IP

Managing database queries

Providing web page rendering

Question : Which DNS record type is used to specify mail servers for a domain?

A Record

CNAME Record

MX Record

TXT Record

Question : What is the main purpose of TTL (Time-to-Live) in DNS?

To encrypt DNS queries

To define how long DNS records are cached

To increase bandwidth

To identify domain types

Question : In DNS query types, which one requires the DNS server to return a complete answer or error?

Iterative Query

Recursive Query

Non-recursive Query

Reverse Query

Question : Which DNS component is responsible for directing queries to the correct Top-Level Domain (TLD) server?

Authoritative DNS Server

DNS Resolver

Root DNS Server

Local Cache

Question : What is the primary function of the Domain Name System (DNS)?

Encrypt data packets

Translate domain names into IP addresses

Control network topology

Manage bandwidth