Networking Concepts

In the OSI model, which layer is responsible for end-to-end communication and error correction?

• Data Link Layer

• Transport Layer

• Network Layer

• Application Layer

Which protocol is used for transferring files over a network and operates on port 21?

• HTTP

• FTP

• SMTP

• DNS

What is the primary difference between HTTP and HTTPS?

• HTTPS uses UDP, while HTTP uses TCP

• HTTPS operates on port 80, and HTTP operates on port 443

• HTTPS encrypts data for secure communication, while HTTP does not

• HTTPS requires administrative privileges, while HTTP does not

Which of the following ports is commonly used for secure email sending (SMTP)?

• 25

• 110

• 443

• 587

What is the purpose of the three-way handshake in TCP?

• To identify the source and destination IP addresses

• To establish a reliable connection between two devices

• To encrypt data during transmission

• To ensure UDP communication is reliable

Which statement is true about UDP?

• It ensures reliable delivery of packets.

• It uses connection-oriented communication.

• It is faster but less reliable than TCP.

• It operates only on port 53.

Which of the following protocols is responsible for translating domain names to IP addresses?

• FTP

• SMTP

• DNS

• DHCP

Which protocol and port combination is considered secure for remote server access?

• Telnet, port 23

• SSH, port 22

• HTTP, port 80

• FTP, port 21

Which port range is used for ephemeral (temporary) ports in most modern operating systems?

• 1-1023

• 1024-49151

• 49152-65535

• 0-65535

Which protocol allows for secure remote login and command execution?

• Telnet

• SSH

• LDAP

• NTP