cisco网络学院第四学期习题

alt900

Question 1: \r\nWhat are the two authentication options supported by PPP?\r\nA.   PAP and clear text \r\nB.   PAP and CHAP \r\nC.   CHAP and clear text \r\nD.   PPP does not support authentication \r\n\r\nQuestion 2: \r\nA router is referred to as which type of device?\r\nA.   DCE \r\nB.   DTE \r\nC.   CPE \r\nD.   CO \r\n\r\nQuestion 3: \r\nWhich type of device does PPP use to provide a reliable connection?\r\nA.   Switches \r\nB.   Routers \r\nC.   Concentrators \r\nD.   Hubs \r\n\r\nQuestion 4: \r\nWhere should extended access lists be placed?\r\nA.   Close to the source \r\nB.   Close to the destination \r\nC.   On any router in the network \r\nD.   Midway between source and destination \r\n\r\nQuestion 5: \r\nWhat command is used to display the hardware addresses in the arp cache?\r\nA.   tracert \r\nB.   arp -a \r\nC.   rarp -a \r\nD.   arp -s \r\n\r\nQuestion 6: \r\nWhat significance do DLCIs have in a Frame Relay network?\r\nA.   Global significance \r\nB.   Local significance \r\nC.   Both local and global significance \r\nD.   DLCIs have been replaced by LMI processes \r\n\r\nQuestion 7: \r\nWhich of the following commands is used on a router to verify Frame Relay is up and operational?\r\nA.   show line \r\nB.   show version \r\nC.   show interface \r\nD.   show frame relay \r\n\r\nQuestion 8: \r\nWhat is the first step in LAN design?\r\nA.   Establish the design goals \r\nB.   Estimate the design cost \r\nC.   Determine the network users \r\nD.   Determine the physical size \r\n\r\nQuestion 9: \r\nWorkgroup servers should be placed in which layer of the three-layer design model?\r\nA.   Core \r\nB.   Distribution \r\nC.   Access \r\nD.   Workgroup \r\n\r\nQuestion 10: \r\nWhich protocol works with Network Traffic Monitoring software to gather information for monitoring analysis?\r\nA.   RIP \r\nB.   IGRP \r\nC.   SNMP \r\nD.   IPX/SPX \r\n\r\nQuestion 11: \r\nWhat command is used to establish a remote login to a router?\r\nA.   rsession \r\nB.   rlogin \r\nC.   telnet \r\nD.   rconsole \r\n\r\nQuestion 12: \r\nXYZ Company is considering online video training applications. Which of the following issues is most important when deploying this application on the network?\r\nA.   Equipment location \r\nB.   Business critical traffic \r\nC.   WAN service selection \r\nD.   Media selection \r\n\r\nQuestion 13: \r\nWhat does CIR designate in a Frame-Relay connection?\r\nA.   Guaranteed rate that the service provider commits to providing \r\nB.   Maximum data burst rate that the switch can handle \r\nC.   Number of simultaneous virtual circuits available from a service provider \r\nD.   Number of simultaneous DLCIs that can be established across the cloud \r\n\r\nQuestion 14: \r\nWhat links are typically the lowest speed links in the enterprise?\r\nA.   LAN links \r\nB.   WAN links \r\nC.   Remote access links \r\nD.   Frame Relay links \r\n\r\nQuestion 15: \r\nWhat connection types are supported on an interface in Frame Relay?\r\nA.   Point-to-point only \r\nB.   Multipoint only \r\nC.   Point-to-point and multipoint \r\nD.   Unicast \r\n\r\nQuestion 16: \r\nISDN voice/video/data channels operate at what speed?\r\nA.   16 kbps \r\nB.   28.8 kbps \r\nC.   32 kbps \r\nD.   64 kbps \r\n\r\nQuestion 17: \r\nWhat protocol supports Network Management?\r\nA.   SMTP \r\nB.   NFS \r\nC.   SNMP \r\nD.   FTP \r\n\r\nQuestion 18: \r\nIn a hierarchical design what device is used for data path determination?\r\nA.   Hubs \r\nB.   Switches \r\nC.   Routers \r\nD.   Bridges \r\n\r\nQuestion 19: \r\nWhich of the following is an alternative to a dedicated WAN link?\r\nA.   X.25 \r\nB.   ISDN \r\nC.   T1 \r\nD.   DS3 \r\n\r\nQuestion 20: \r\nWhen configuring ISDN on a router, from whom is the SPID obtained?\r\nA.   Network administrator \r\nB.   User \r\nC.   Service provider \r\nD.   Internic \r\n\r\nQuestion 21: \r\nWhat command is used to check a physical connection between two hosts?\r\nA.   TPING \r\nB.   WINPING \r\nC.   TCPING \r\nD.   PING \r\n\r\nQuestion 22: \r\nAt what time interval does IGRP send routing updates?\r\nA.   120 seconds \r\nB.   30 seconds \r\nC.   60 seconds \r\nD.   90 seconds \r\n\r\nQuestion 23: \r\nWhat happens to a packet that does not match any of the tests in an access list?\r\nA.   It is discarded. \r\nB.   It is sent to the recipient. \r\nC.   It is stored until the access list is updated. \r\nD.   It is returned to the sender. \r\n\r\nQuestion 24: \r\nWhich of the following is another term for shortest path first routing algorithm?\r\nA.   Source bridging \r\nB.   Store and forward \r\nC.   Distance-vector \r\nD.   Link state \r\n\r\nQuestion 25: \r\nWhat is the default ISDN encapsulation used on Cisco ISDN routers?\r\nA.   SLIP \r\nB.   PPP \r\nC.   HDLC \r\nD.   VPP \r\n\r\nQuestion 26: \r\nWhat is required to configure multiple DLCIs on a single router interface?\r\nA.   A single network address \r\nB.   Multiple LMIs \r\nC.   Subinterfaces \r\nD.   Multiple IP addresses on the same subnet \r\n\r\nQuestion 27: \r\nWhich ISDN channel is used to establish call setup?\r\nA.   Channel D \r\nB.   Channel B \r\nC.   Channel Call setup \r\nD.   Channel C \r\n\r\nQuestion 28: \r\nWhich ISDN channels are for voice, video, and data?\r\nA.   D channels \r\nB.   B channels \r\nC.   Data channels \r\nD.   C channels \r\n\r\nQuestion 29: \r\nWhat does PPP use to establish, configure and test the WAN link?\r\nA.   Network control program \r\nB.   Link control protocol \r\nC.   Simple network management protocol \r\nD.   Dynamic host configuration protocol \r\n\r\nQuestion 30: \r\nWhat is used to indicate the beginning or end of a PPP frame?\r\nA.   Address bits \r\nB.   Control bits \r\nC.   Frame sequencing \r\nD.   Flags \r\n\r\nQuestion 31: \r\nWhat type of Frame Relay message is used to ensure that both sides will continue to see an active connection?\r\nA.   Keepalives \r\nB.   Call reference \r\nC.   Status-inquiry \r\nD.   Information element \r\n\r\nQuestion 32: \r\nIn which layer of the three-layer design model would users with common interests be grouped?\r\nA.   Access \r\nB.   Workgroup \r\nC.   Core \r\nD.   Distribution \r\n\r\nQuestion 33: \r\nWhat is the function of the first phase of PPP negotiation?\r\nA.   Link termination \r\nB.   Link-quality determination \r\nC.   Link establishment and configuration negotiation \r\nD.   Network-layer protocol configuration negotiation \r\n\r\nQuestion 34: \r\nA switch segments a LAN into which of the following?\r\nA.   Microsegments \r\nB.   Workgroups \r\nC.   Broadcast domains \r\nD.   Access groups \r\n\r\nQuestion 35: \r\nWhich of the following is the ISDN Layer 2 signaling protocol?\r\nA.   BRI \r\nB.   PRI \r\nC.   LAPA \r\nD.   LAPD \r\n\r\nQuestion 36: \r\nWhat is the function of the service profile identifiers or SPIDs?\r\nA.   Replace the DLC number \r\nB.   Used instead of subnetting \r\nC.   Identify line configuration \r\nD.   Logical address of the ISDN router

alt900

Question 37: \r\nIn which layer of the three-layer design model can LANs or groups of LANs be found?\r\nA.   Workgroup \r\nB.   Distribution \r\nC.   Access \r\nD.   Core \r\n\r\nQuestion 38: \r\nWhich OSI layer performs the following types of encapsulation: ISDN, Frame Relay, and HDLC?\r\nA.   Network \r\nB.   Session \r\nC.   Data link \r\nD.   Transport \r\n\r\nQuestion 39: \r\nWhich WAN protocol uses virtual circuits to make connections through a connection-oriented service?\r\nA.   Frame Relay \r\nB.   ISDN \r\nC.   ATM \r\nD.   PPP \r\n\r\nQuestion 40: \r\nWhat layers of the OSI model are WANs focused on?\r\nA.   Network and transport \r\nB.   Physical and data link \r\nC.   Network and data link \r\nD.   Physical and network \r\n\r\nQuestion 41: \r\nWhich of the following is used to alleviate congestion?\r\nA.   Install more hubs \r\nB.   Use an extended star \r\nC.   Use a bus topology \r\nD.   Increase the bandwidth \r\n\r\nQuestion 42: \r\nWhat type of handshaking occurs when using CHAP?\r\nA.   One-way \r\nB.   Two-way \r\nC.   Three-way \r\nD.   Four-way \r\n\r\nQuestion 43: \r\nIn which layer of the three-layer design model is policy-based connectivity implemented?\r\nA.   Core \r\nB.   Access \r\nC.   Distribution \r\nD.   Workgroup \r\n\r\nQuestion 44: \r\nWhich of the following is a WAN design characteristic?\r\nA.   Provides user access \r\nB.   Relatively low throughput \r\nC.   Extremely low error rates \r\nD.   Low delay for users \r\n\r\nQuestion 45: \r\nVLANs, along with routers, establish which of the following?\r\nA.   WANs \r\nB.   LANs \r\nC.   Broadcast domains \r\nD.   Collision domains \r\n\r\nQuestion 46: \r\nWhich IPX routing command is used to show the number and type of packets received and transmitted by the router?\r\nA.   show ipx servers \r\nB.   show ipx route \r\nC.   show ipx traffic \r\nD.   show ipx interface \r\n\r\nQuestion 47: \r\nWhat does PPP use to configure network layer protocols?\r\nA.   NCP \r\nB.   LCP \r\nC.   LPQ \r\nD.   LPD \r\n\r\nQuestion 48: \r\nWhich of the following commands displays current TCP/IP network connections?\r\nA.   Ping \r\nB.   Tracert \r\nC.   Telnet \r\nD.   Netstat \r\n\r\nQuestion 49: \r\nWhich of the following commands is used by Windows NT computers to display IP settings?\r\nA.   ipconfig \r\nB.   winipcfg \r\nC.   ipsetting \r\nD.   ipstats \r\n\r\nQuestion 50: \r\nWhat does remote monitoring use to gather data?\r\nA.   SNMP agent \r\nB.   RMON probe \r\nC.   SNTP server \r\nD.   MIB \r\n\r\nQuestion 51: \r\nWhat routing protocol does Novell use?\r\nA.   IGRP \r\nB.   RIP \r\nC.   EIGRP \r\nD.   IPX \r\n\r\nQuestion 52: \r\nWhat command is used to configure an interface for PPP encapsulation?\r\nA.   router>encapsulation ppp \r\nB.   router#encapsulation ppp \r\nC.   router(config)#encapsulation ppp \r\nD.   router(config-if)#encapsulation ppp \r\n\r\nQuestion 53: \r\nWhat type of network design is the most scalable?\r\nA.   Hierarchical \r\nB.   Mesh \r\nC.   Flat \r\nD.   Linear \r\n\r\nQuestion 54: \r\nWhich of the following single router changes should NOT adversely affect network operations?\r\nA.   Creating a router banner \r\nB.   Changing the DNS server\'s address \r\nC.   Changing subnet mask length \r\nD.   Changing the routed protocols in use \r\n\r\nQuestion 55: \r\nWhich packet-switched WAN technologies are characterized by the use of Permanent Virtual Circuits (PVCs)?\r\nA.   Frame Relay and ISDN \r\nB.   Frame Relay and X.25 \r\nC.   ISDN and X.25 \r\nD.   ISDN only \r\n\r\nQuestion 56: \r\nWhat type of data is carried on ISDN B channels?\r\nA.   Analog \r\nB.   Sideband signals \r\nC.   Signal and control \r\nD.   Voice and data \r\n\r\nQuestion 57: \r\nWhat command is used to configure a subinterface that will forward broadcasts and routing updates?\r\nA.   router(config-if)#interface serial 1 multipoint \r\nB.   router(config-if)#interface serial 1 point-to-point \r\nC.   router(config-if)#interface serial 1.1 multipoint \r\nD.   router(config-if)#interface serial 1.1 point-to-point \r\n\r\nQuestion 58: \r\nWhich of the following improves security in PPP authentication?\r\nA.   LCP \r\nB.   NCP \r\nC.   CHAP \r\nD.   PAP \r\n\r\nQuestion 59: \r\nThe point at which the CPE ends is known as what?\r\nA.   Point of presence \r\nB.   Local loop \r\nC.   DTE \r\nD.   Demarcation \r\n\r\nQuestion 60: \r\nWhat method does a router use to build a Frame Relay map?\r\nA.   ARP requests \r\nB.   RARP requests \r\nC.   Inverse RARP requests \r\nD.   Inverse ARP requests