quiz

Application Layer Protocols

1. Which protocol is commonly used at the application layer for secure web browsing?

  • A) FTP
  • B) HTTP
  • C) HTTPS
  • D) DNS
C) HTTPS Explanation

2. For managing and accessing directories and directory services via a network, which application layer protocol is utilized?

  • A) HTTP
  • B) LDAP
  • C) FTP
  • D) Telnet
B) LDAP Explanation

3. Which port number is used by the FTP for control commands?

  • A) 20
  • B) 21
  • C) 22
  • D) 23
B) 21 Explanation

4. What does the IMAP protocol at the application layer provide?

  • A) Secure file transfer
  • B) Domain name resolution
  • C) Access to and management of email messages on a mail server
  • D) Real-time chat communication
C) Access to and management of email messages on a mail server Explanation

5. Which port number is commonly associated with the SNMP service?

  • A)  69
  • B) 161
  • C) 443
  • D) 995
B) 161 Explanation

6. What is the full form of SMTP?

  • A) Simple Mail Transmission Protocol
  • B) Simple Mail Transfer Protocol
  • C) Secure Mail Transfer Protocol
  • D) Simple Message Transfer Protocol
B) Simple Mail Transfer Protocol Explanation

7. Which application layer protocol is commonly used for real-time communication, including text, voice, and video chat?

  • A) FTP
  • B) SMTP
  • C) SIP
  • D) Telnet
C) SIP Explanation

8. What is the default port number for HTTP?

  • A) 20
  • B) 21
  • C) 443
  • D) 80
D) 80 Explanation

9. Which port number is commonly associated with the MySQL database service?

  • A)  22
  • B) 80
  • C) 1433
  • D) 3306
D) 3306 Explanation

10. The protocol used to retrieve emails from a mail server is:

  • A) SMTP
  • B) POP3
  • C) NTP
  • D) FTP
B) POP3 Explanation

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