PCPP-32-101 4.2 Work with Sockets in Python PCPP-32-1 Practice Questions (Page 5)

Questions 21–23

1. 21application · medium

   A developer wrote a function that sends an HTTP request and reads the response. The function is called many times in a loop. What is the best practice to ensure the socket is properly closed after each request?

   • AUse a try/finally block to call s.close() in the finally clause.
   • BCall s.close() at the end of the function.
   • CCall s.shutdown(socket.SHUT_RDWR) before closing.
   • DRely on garbage collection to close the socket automatically.
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2. 22foundation · easy

   What is the purpose of the SOCK_STREAM constant in socket creation?

   • AIt specifies a UDP socket that provides connectionless datagram communication.
   • BIt specifies the IPv4 address family.
   • CIt specifies a raw socket for low-level network access.
   • DIt specifies a TCP socket that provides a reliable, ordered, byte-stream connection.
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3. 23expert · hard

   A developer is writing a client that must connect to a server using either IPv4 or IPv6, depending on what is available. Which approach is the most robust?

   • ACreate a socket with AF_INET and connect.
   • BUse socket.socket() without specifying the address family.
   • CUse socket.getaddrinfo() to get a list of addresses and try each one until a connection succeeds.
   • DCreate a socket with AF_INET6 and connect.
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