Internet Entities and Organizations Quiz
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Questions and Answers

What is the primary purpose of making these slides freely available to all?

  • To encourage faculty and students to modify and delete slides to suit their needs
  • To allow for the addition of animations to the slides
  • To prevent copyright infringement
  • To attract more readers to use the book (correct)

    • What is the requested condition if one uses these slides in a class?

  • Note that they are adapted from the original slides
  • Mention their source and adapt the slides as needed (correct)
  • Include the copyright details in the footer of the slides
  • Add animations to the slides

    • What application layer protocol is mentioned in the outline of Chapter 2?

  • HTTP (correct)
  • FTP
  • SMTP
  • P2P applications

    • Which protocol is not part of the outline of Chapter 2?

    <p>TCP</p> Signup and view all the answers

    What is the purpose of socket programming mentioned in the outline of Chapter 2?

    <p>To implement network applications using UDP and TCP</p> Signup and view all the answers

    What is the recommended notation if these slides are posted on a website?

    <p>Mention they are adapted from original slides and note the copyright</p> Signup and view all the answers

    What is the main purpose of DNS DDoS attacks?

    <p>To bombard root servers with traffic</p> Signup and view all the answers

    What is the potential danger of bombarding TLD servers with DDoS attacks?

    <p>It can be more dangerous than bombarding root servers</p> Signup and view all the answers

    In a pure P2P architecture, what is true about the communication between end systems?

    <p>They directly communicate with arbitrary end systems</p> Signup and view all the answers

    What is a key characteristic of electronic mail (email) protocols like SMTP, POP3, and IMAP?

    <p>They facilitate the exchange of emails</p> Signup and view all the answers

    Which protocol is used for e-mail communication?

    <p>SMTP</p> Signup and view all the answers

    Which protocol is used for remote terminal access?

    <p>Telnet</p> Signup and view all the answers

    What does SSL provide for TCP and UDP?

    <p>Encrypted TCP connection</p> Signup and view all the answers

    Which protocol provides encrypted TCP connection, data integrity, and end-point authentication at the application layer?

    <p>SSL</p> Signup and view all the answers

    What type of request includes input in the URL?

    <p>GET</p> Signup and view all the answers

    Which status code indicates that the requested document was not found on the server?

    <p>404 Not Found</p> Signup and view all the answers

    What port does HTTP typically use?

    <p>80</p> Signup and view all the answers

    Which protocol is used for sending and displaying web objects?

    <p>HTTP</p> Signup and view all the answers

    Which method uploads a file in the entity body to the specified path in the URL field?

    <p>PUT</p> Signup and view all the answers

    Which status code indicates that the server understood the request message but the request was not fulfilled or processing could not be carried out due to a client error?

    <p>400 Bad Request</p> Signup and view all the answers

    What is the primary function of cookies in web applications?

    <p>To maintain user-server state across multiple requests</p> Signup and view all the answers

    Which application layer protocol is responsible for hypertext transfer?

    <p>HTTP</p> Signup and view all the answers

    Which architecture involves an always-on server and client devices that communicate with the server?

    <p>Client-server architecture</p> Signup and view all the answers

    Which application layer protocol allows for interoperability and is defined in RFCs?

    <p>HTTP</p> Signup and view all the answers

    What is the purpose of a client process in a network application?

    <p>To initiate communication</p> Signup and view all the answers

    What type of communication architecture involves arbitrary end systems directly communicating and does not have an always-on server?

    <p>P2P architecture</p> Signup and view all the answers

    What is the purpose of a server process in a network application?

    <p>To provide service to other peers</p> Signup and view all the answers

    Which transport service requirement is essential for applications like file transfer and web transactions?

    <p>Data integrity</p> Signup and view all the answers

    Which Internet transport protocol provides reliable transport between sending and receiving processes along with flow control and congestion control?

    <p>TCP service</p> Signup and view all the answers

    Which application layer protocol is commonly used for transferring files over the Internet?

    <p>FTP</p> Signup and view all the answers

    What type of transport service does Internet telephony and interactive games require?

    <p><strong>Low delay</strong></p> Signup and view all the answers

    What is the purpose of the UDP protocol despite its limitations compared to TCP?

    <p>To provide unreliable data transfer without overhead.</p> Signup and view all the answers

    What type of architecture does a web browser fetching a web page from a web server represent?

    <p>Client-server architecture</p> Signup and view all the answers

    What does the identifier for a process in a network application include?

    <p>Both IP address and port number associated with the process.</p> Signup and view all the answers

    What does the EU law require regarding placing a cookie on a user's computer?

    <p>The user must be informed and must consent to it.</p> Signup and view all the answers

    What is the primary goal of web caches (proxy servers)?

    <p>To satisfy client requests without involving the origin server.</p> Signup and view all the answers

    What is a major feature of HTTP/2 that addresses the issue of loading multiple objects simultaneously?

    <p>Multiplexing</p> Signup and view all the answers

    Which protocol is commonly used for transferring email messages between mail servers?

    <p>SMTP</p> Signup and view all the answers

    What is the function of a user agent in the context of electronic mail?

    <p>Composing, editing, and reading mail messages</p> Signup and view all the answers

    Which phase of an email transfer involves handshaking and greeting between the sending and receiving servers?

    <p>Handshaking phase</p> Signup and view all the answers

    What type of connection does SMTP use to transfer email messages from client to server?

    <p>TCP</p> Signup and view all the answers

    What is the role of the outgoing mail server in the context of electronic mail?

    <p>Storing outgoing (to be sent) mail messages</p> Signup and view all the answers

    What does HTTP/2 use to support loading multiple objects at the same time over a single connection?

    <p>Multiplexing</p> Signup and view all the answers

    What is the main purpose of web caching?

    <p>Reduce response time for client requests and reduce traffic on an access link</p> Signup and view all the answers

    In the context of electronic mail, which protocol is commonly used by mail servers to send email messages?

    <p>SMTP</p> Signup and view all the answers

    What is the function of a user agent in electronic mail systems?

    <p>Composing, editing, and reading mail messages</p> Signup and view all the answers

    What is the main purpose of the Domain Name System (DNS)?

    <p>To convert hostnames to IP addresses</p> Signup and view all the answers

    Which type of organization is responsible for maintaining servers for the .com top-level domain (TLD)?

    <p>Network Solutions</p> Signup and view all the answers

    What is the main function of a TLD (top-level domain) server?

    <p>To translate hostnames to IP addresses</p> Signup and view all the answers

    Which entity is responsible for maintaining the authoritative DNS servers for an organization's named hosts?

    <p>The organization or its service provider</p> Signup and view all the answers

    What role does the local DNS name server play in the DNS hierarchy?

    <p>It acts as a proxy and forwards queries into the hierarchy</p> Signup and view all the answers

    What is the purpose of caching in the DNS system?

    <p>To store recent name-to-address translation pairs</p> Signup and view all the answers

    Which type of record in the DNS system stores the IP address associated with a hostname?

    <p>A record</p> Signup and view all the answers

    When a new startup registers its name at a DNS registrar, which type of record is inserted into the TLD server?

    <p>(name, type=A, value)</p> Signup and view all the answers

    What is the purpose of a recursive query in DNS?

    <p>To resolve a name by querying other servers on behalf of the requesting client</p> Signup and view all the answers

    What is the primary responsibility of root name servers in the DNS system?

    <p>To provide list of authoritative DNS servers for TLDs</p> Signup and view all the answers

    What does TTL (Time to Live) represent in the context of DNS caching?

    <p>It represents the amount of time an entry remains in the cache before expiring</p> Signup and view all the answers

    What is the role of the authoritative DNS server?

    <p>To provide host's IP address and refer to other servers if necessary</p> Signup and view all the answers

    What does the SMTP 250 response code indicate?

    <p>Message accepted for delivery</p> Signup and view all the answers

    What is the purpose of the 'QUIT' command in SMTP?

    <p>To close the connection with the server</p> Signup and view all the answers

    Which protocol is used for retrieval of emails from the server?

    <p>POP3</p> Signup and view all the answers

    What is the main difference between POP3 and IMAP?

    <p>POP3 is stateless across sessions while IMAP keeps user state across sessions</p> Signup and view all the answers

    What is the purpose of MIME in email?

    <p>To handle email attachments and non-ASCII text</p> Signup and view all the answers

    What is the purpose of the 'DATA' command in SMTP?

    <p>To enter mail data for sending</p> Signup and view all the answers

    What does the SMTP 354 response code indicate?

    <p>Request to enter mail data</p> Signup and view all the answers

    Which protocol allows users to organize messages in folders and keeps user state across sessions?

    <p>IMAP</p> Signup and view all the answers

    What does MIME stand for in email communication?

    <p>Multipurpose Internet Mail Extensions</p> Signup and view all the answers

    'SMTP' is an abbreviation for:

    <p>'Simple Mail Transfer Protocol'</p> Signup and view all the answers

    What is the purpose of the 'HELO' command in SMTP?

    <p>To greet the server and identify the client</p> Signup and view all the answers

    Which protocol is used for addressing and mapping between IP address and name?

    <p>DNS</p> Signup and view all the answers

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