W2 - Transport Layer Services (SY24-25/C305-302I)

Multiple Choice

Which of the following protocols is commonly used by clients to access web services?

• FTP

• SMTP

• DNS

• HTTP

Multiple Choice

Which of the following best describes the process of a client connecting to a web server?

• The client directly accesses the server without resolving the IP address.

• The client sends a DNS request to resolve the IP address of the server, then establishes a connection.

• The client encrypts data before requesting access.

• The client needs no IP address to connect to the server.

Multiple Choice

In the client-server model, how is data typically transmitted from the client to the server?

• The client sends a request packet to the server, which processes and responds to it.

• The client sends an encrypted request to the server.

• The client sends data directly through an intermediary server.

• The client sends data through multiple redundant servers.

Multiple Choice

Which of the following is a key feature of TCP?

• Connectionless communication

• Fast transmission without error-checking

• Unreliable delivery

• Guaranteed data delivery

Multiple Choice

UDP is best suited for which of the following types of applications?

• Live streaming

• Email communication

• File transfer

• Secure transactions

Multiple Choice

How does UDP handle port numbers differently than TCP?

• UDP doesn’t use port numbers.

• UDP uses port numbers only for encryption.

• UDP uses the same port numbers as TCP for all communications.

• UDP uses port numbers to route data to the correct application without establishing a connection.

Multiple Choice

What happens if a service is not listening on the specified port number in a TCP communication?

• The connection fails, and an error is returned to the client.

• The connection is established but data is dropped.

• The client retries on another port.

• The server automatically reroutes to a different port.

Multiple Choice

You're trying to access a website, but your browser returns a "Server Not Found" error. What is the most likely issue?

• The DNS server failed to resolve the website’s domain name to an IP address.

• The server is overloaded.

• Your computer's firewall is blocking the connection.

• The website is using an outdated HTTP version.

Multiple Choice

A user is unable to reach any websites, but can still access local network resources. Which of the following is the most likely cause?

• The user’s computer has been assigned an invalid IP address.

• The DNS server is down.

• The web server is offline.

• The default gateway configuration is incorrect.

Multiple Choice

You’ve deployed a web server, but clients report that they can't access it. After checking the server's firewall, you realize that the web server’s port is closed. Which port should be opened to resolve this issue?

• 20

• 21

• 80

• 110

Multiple Choice

A client application times out when trying to connect to a remote server. Which method can help determine if the server is reachable over the network?

• Checking the server’s firewall rules

• Running a ping test to the server’s IP address

• Ensuring the server’s application is running

• Updating the client application to the latest version

Multiple Choice

A gaming application requires fast communication between players, but some data loss is acceptable. Which transport layer protocol should you implement?

• TCP

• UDP

• HTTP

• FTP