1、20 of 20ENetwork Chapter 3 - CCNA Exploration: Network Fundamentals (Version 4.0)1 What application layer protocol is commonly used to support for file transfers between a client and a server?HTMLHTTPFTPTelnet2 Which layer of the OSI model supplies services that allow user to interface with the netw
2、ork?physicalsessionnetworkpresentationapplicationtransport3 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.Speci
3、alized 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.4 What are two characteristics of clients in data networks? (Choose two.)use daemonsinitiate data exchangesare repositories
4、of datamay upload data to serverslisten for requests from servers5 How does the application layer on a server usually process multiple client request for services?ceases all connections to the servicedenies multiple connections to a single daemonsuspends the current connection to allow the new conne
5、ctionuses support from lower layer functions to distinguish between connections to the service6 What is the automated service that matches resource names with the required IP address?HTTPSSHFQDNDNSTelnetSMTP7 Which email components are used to forward mail between servers? (Choose two.)MDAIMAPMTAPOP
6、SMTPMUA8 Which application layer protocols correctly match a corresponding function? (Choose two.)DNS dynamically allocates IP addresses to hostsHTTP transfers data from a web server to a clientPOP delivers email from the client to the server email serverSMTP supports file sharingTelnet provides a v
7、irtual connection for remote access9Refer to the exhibit. What is the destination port for the communication that is represented on line 5?8012611553339126552010As compared to SSH, what is the primary disadvantage of telnet?not widely availabledoes not support encryptionconsumes more network bandwid
8、thdoes not support authentication11 What is the purpose of resource records in DNS?temporarily holds resolved entriesused by the server to resolve namessent by the client to the server during a querypasses authentication information between the server and client12 Which two protocols are used to con
9、trol the transfer of web resources from a web server to a client browser? (Choose two.)ASPFTPHTMLHTTPHTTPSIP13 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 administrationd
10、oes not require specialized softwaresecurity is easier to enforcelower cost implementationprovides a single point of failure14 What are two characteristics of peer-to-peer networks? (Choose two.)decentralized resourcescentralized user accountsresource sharing without a dedicated serverscalableone wa
11、y data flow15 What are three properties of peer-to-peer applications? (Choose three.)acts as both a client and server within the same communicationrequires centralized account administrationhybrid mode includes a centralized directory of filescan be used in client-server networksrequires a direct ph
12、ysical connection between devicescentralized authentication is required16 What application layer protocol describes the services that are used for file sharing in Microsoft networks?DHCPDNSSMB/服务器消息块SMTPTelnet17 What is the role of the OSI application layer?provides segmentation of dataprovides encr
13、yption and conversion of dataprovides the interface between the applications on either end of the networkprovides control of all the data flowing between the source and destination devices18 Which statements are correct concerning the role of the MTA in handling email? (Choose three.)routes email to
14、 the MDA on other serversreceives email from the clients MUAreceives email via the POP3 protocolpasses email to the MDA for final deliveryuses SMTP to route email between serversdelivers email to clients via the POP3 protocol19 What are two forms of application layer software? (Choose two.)applicationsdialogsrequestsservicessyntax20 What three protocols operate at the Application layer of the OSI model? (Choose three.)ARPDNSPPPSMTPPOPICMP
