ccna1-chapter-03

Chapter 3 – CCNA 1

01. What are two forms of application layer software? (Choose two.)

  • applications;
  • dialogs;
  • requests;
  • services;
  • syntax.

02. What is the purpose of resource records in DNS?

  • temporarily holds resolved entries;
  • used by the server to resolve names;
  • sent by the client to during a query;
  • passes authentication information between the server and client .

03. What three protocols operate at the Application layer of the OSI model? (Choose three.)

  • ARP;
  • DNS;
  • PPP;
  • SMTP;
  • POP;
  • ICMP .

04. Which application layer protocols correctly match a corresponding function? (Choose two.)

  • DNS dynamically allocates IP addresses to hosts;
  • HTTP transfers data from a web server to a client;
  • POP delivers email from the client to the server email server;
  • SMTP supports file sharing;
  • Telnet provides a virtual connection for remote access .

05. As compared to SSH, what is the primary disadvantage of TELNET?

  • not widely available;
  • does not support encryption;
  • consumes more network bandwidth;
  • does not support authentication.

06. What are three properties of peer-to-peer applications? (Choose three.)

  • acts as both a client and server within the same communication;
  • requires centralized account administration;
  • hybrid mode includes a centralized directory of files;
  • can be used in client-server networks;
  • requires a direct physical connection between devices;
  • centralized authentication is required.

07. Which email components are used to forward mail between servers? (Choose two.)

  • MDA;
  • IMAP;
  • MTA;
  • POP;
  • SMTP;
  • MUA.

08. What application layer protocol describes the services that are used for file sharing in Microsoft networks?

  • DHCP;
  • DNS;
  • SMB;
  • SMTP;
  • Telnet.

09. Which statements are correct concerning the role of the MTA in handling email? (Choose three.)

  • routes email to the MDA on other servers;
  • receives email from the client’s MUA;
  • receives email via the POP3 protocol;
  • passes email to the MDA for final delivery;
  • uses SMTP to route email between servers;
  • delivers email to clients via the POP3 protocol.

10. How does the application layer on a server usually process multiple client request for services?

  • ceases all connections to the service;
  • denies multiple connections to a single daemon;
  • suspends the current connection to allow the new connection;
  • uses support from lower layer functions to distinguish between connections to the service .

11. Which layer of the OSI model supplies services that allow user to interface with the network?

  • physical;
  • session;
  • network;
  • presentation;
  • application;
  • transport.

12. What is the automated service that matches resource names with the required IP address?

  • HTTP;
  • SSH;
  • FQDN;
  • DNS;
  • Telnet;
  • SMTP.

13. ccna1-3-13 Refer to the exhibit. What is the destination port for the communication that is represented on line 5?

  • 80;
  • 1261;
  • 15533;
  • 3912;
  • 65520 .

14. What are two characteristics of peer-to-peer networks? (Choose two.)

  • scalable;
  • one way data flow;
  • decentralized resources;
  • centralized user accounts;
  • resource sharing without a dedicated server .

15. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client- server model? (Choose two.)

  • centralized administration;
  • does not require specialized software;
  • security is easier to enforce;
  • lower cost implementation;
  • provides a single point of failure.

16. Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)

  • ASP;
  • FTP;
  • HTML;
  • HTTP;
  • HTTPS;
  • IP.

17. What is the role of the OSI application layer?

  • provides segmentation of data;
  • provides encryption and conversion of data;
  • provides the interface between the applications on either end of the network;
  • provides control of all the data flowing between the source and destination devices .

18. A small home network has been installed to interconnect three computers together for gaming and file sharing. What two properties represent this network type? (Choose two.)

  • User accounts are centralized.
  • Security is difficult to enforce.
  • Specialized operating system software is required.
  • File permissions are controlled by a single computer.
  • A computer that responds to a file sharing request is functioning as a server.

19. What application layer protocol is commonly used to support for file transfers between a client and a server?

  • HTML;
  • HTTP;
  • FTP;
  • Telnet.

20. What are two characteristics of clients in data networks? (Choose two.)

  • use daemons;
  • initiate data exchanges;
  • are repositories of data;
  • may upload data to servers;
  • listen for requests from servers .



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