Quiz 04 - Networked Programs

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1. What is the role of Transport Control Protocol (TCP) in networking?

• A) It encrypts data before transmission
• B) It ensures reliable data transmission by retransmitting lost packets
• C) It translates domain names into IP addresses
• D) It compresses network traffic

2. Which statement about TCP port numbers is TRUE?

• A) They are used to differentiate applications on the same server
• B) Each IP address has a unique, fixed port number
• C) Port numbers are assigned by TCP randomly
• D) The same port number cannot be used for different services

3. What port number is commonly used for HTTP communication?

• 21
• 25
• 80
• 8080
• 443

4. What would be the output of the following Python script?

• A) It fetches a webpage from www.example.com.
• B) It establishes a TCP connection but fails due to a wrong port number.
• C) It prints HTTP 200 OK response if the server is running on port 8080.
• D) It throws a syntax error due to recv(1024).

5. Which of the following statements about urllib.request.urlopen() is true?

• A) It only works with HTTP GET requests.
• B) It automatically follows redirects by default.
• C) It requires manual decoding of responses.
• D) It does not support HTTPS connections.

6. In web scraping, what is the primary advantage of using BeautifulSoup over regex-based parsing?

• A) BeautifulSoup can execute JavaScript on the page.
• B) BeautifulSoup provides a structured way to parse HTML and XML.
• C) Regex is more efficient than BeautifulSoup.
• D) BeautifulSoup is built into Python by default.

7. What will happen if you try to scrape a website that has robots.txt restrictions against your bot?

• A) The script will automatically stop.
• B) The website will return a 403 Forbidden response.
• C) You might be violating the website’s terms of service.
• D) The script will crash immediately.

8. Why is UTF-8 preferred over ASCII in network communication?

• A) UTF-8 is more memory-efficient than ASCII.
• B) UTF-8 supports a wider range of characters globally.
• C) UTF-8 is the default encoding in all web browsers.
• D) ASCII is deprecated in modern programming.