| Take Assessment - Chapter 2 Exam - CCNA 4 Version 2.1.4 1 What is the most common type of packet-switched WAN network? SMDS ISDN X Frame Relay X.25 2 Which technique is used by a router to dynamically initiate circuit-switched sessions when transmitting end stations require connectivity? Point-to-point links Dedicated lines Point-to-multipoint links X Dial-on-demand routing 3 Which of the following is a packet switched WAN technology? X Frame Relay T1/E1 POTS ISDN 4 What is the process of allocating bandwidth to different sources on the same media? X Time Division Multiplexing Bandwidth allocation Load distribution Packet switching 5 What layers of the OSI model are WANs focused on? Network and transport X Physical and data link Network and data link Physical and network 6 What is the bit rate capacity of a T1 line? X 1.544 Mbps 2.048 Mbps 44.76 Mbps 155.54 Mbps 7 Which digital service provides both voice and data transmission over existing phone lines? PPP HDLC X.25 X ISDN 8 The point at which the CPE ends is known as what? Point of presence Local loop DTE X Demarcation 9 Which of the following is NOT an essential component of a leased line connection? X Switch CSU/DSU Router port Service provider circuit 10 Which OSI layer performs the following types of encapsulation: ISDN, Frame Relay, and HDLC? Network Session X Data link Transport 11 What do HDLC, PPP, Frame Relay and ISDN have in common? They operate at the physical layer. They operate at the network layer. X They operate at the data link layer. They are proprietary standards. 12 How are WAN link options classified? Multiplexed and packet switched Packet switched and broadcast Dedicated and broadcast X Dedicated and switched 13 Which of the following are examples of WAN services? Ethernet and 802.3 X ISDN and Frame Relay Token Ring and FDDI SDLC and HDLC 14 Dial-on-demand routing can dynamically initiate and close which of the following session types? Dedicated line X Circuit-switched line Packet-switched line PVC 15 What do WAN standards typically describe? All layers of the OSI model Just the physical layer of the OSI model Just the data link layer of the OSI model X Both the physical and data link layers of the OSI model 16 Which packet-switched WAN technologies are characterized by the use of Permanent Virtual Circuits (PVCs)? Frame Relay and ISDN X Frame Relay and X.25 ISDN and X.25 ISDN only 17 Which of the following devices interprets both digital and analog signals? Routers X Modem WAN switch BRI interface 18 What is the name of the collective switches and facilities (called trunks) inside the WAN provider's cloud? Customer premises equipment X Toll network Demarcation Local loop 19 The cabling that extends from the customer's site (CPE) to the Central Office (CO) is known as what? X Local loop T1 link Telco loop Switch circuit 20 Which of the following is a circuit switched WAN technology? ATM T1/E1 X ISDN SMDS 21 Which WAN service(s) employs the use of TDMs? X Basic telephone service and ISDN Frame Relay Frame Relay and basic telephone service POTS and ATM Take Assessment - Chapter 3 Exam - CCNA 4 Version 2.1.4 1 XYZ Company is considering online video training applications. Which of the following issues is most important when deploying this application on the network? Equipment location X Business critical traffic WAN service selection Media selection 2 Which of the following is an alternative to a dedicated link? DS3 Leased line X ISDN T1 3 Which of the following has no effect on availability? X User's training level Throughput Response time Access to resources 4 Which is the most expensive and time consuming method of obtaining user utilization information? Creating focus groups Building a network baseline X Administering a human factors test Conducting a performance analysis of the network 5 What type of network design is the most scalable? X Hierarchical Mesh Flat Linear 6 What is each site called in a one-layer network design? Collision domain Separate class A subnet An enterprise X Broadcast domain 7 What type of network design is the easiest to implement? X Hierarchical Mesh Hybrid Linear 8 In a hierarchical design, what layer of the OSI model can be used to control data traffic patterns? Data link X Network Physical Transport 9 Which is NOT part of the three-layer model? Core X Workgroups Distribution Access 10 In which layer of the three-layer design model would broadcast traffic be isolated? Workgroup Access X Core Distribution 11 Which layer of the three-layer design model is responsible for providing redundant paths? X Distribution Core Workgroup Access 12 WAN traffic is expected to increase in the next five years by what percentage? 3% 30% X 300% 3000% 13 Which layer of the three-layer design model controls access to services? Workgroup Access Core X Distribution 14 Which of the following statements describes sensitivity testing? X Breaking stable links and observing the results Breaking unstable links and observing the results Generating additional network traffic and observing the results Eliminating workstations and observing the results 15 What causes data traffic to flow up a three-layer hierarchical structure? Client suggestions User demands Routing protocols X Source/destination addressing 16 As a network administrator you are in charge of analyzing network requirements. Which issues would you need to include in the anaylsis? User applications, switch capacity, size of collision domains X Business requirements, technical requirements, performance requirements User applications, technical requirements, server capacity Performance requirements, switch capacity, operating systems in use 17 Which is a new network requirement that is putting a burden on traditional shared-media? Network usage has increased Network costs continue to increase Growth of corporate intranets and extranets X All of the above 18 Which layer of the three-layer design model is responsible for providing a fast path between remote sites? X Core Distribution Workgroup Access 19 In a two-layer design what is used to interconnect separate sites? X WAN link LAN link UTP STP cable 20 Which of the following is an advantage of using the OSI model in WAN design? Allows the network to be designed in layers Uses layers to simplify the task required for internetworking Design elements can be replicated as the network grows X All of the above 21 Workgroup servers should be placed in which layer of the three-layer design model? Core Distribution X Access Workgroup 22 In which layer of the three-layer design model would users with common interests be grouped? X Access Workgroup Core Distribution 23 In which layer of the three-layer design model can LANs or groups of LANs be found? Workgroup Distribution X Access Core 24 In which layer of the three-layer design model is policy-based connectivity implemented? Core Access X Distribution Workgroup 25 In which layer of the three-layer design model is the campus backbone found? Access Workgroup Core X Distribution Take Assessment - Chapter 4 Exam - CCNA 4 Version 2.1.4 1 Which type of device does PPP use to provide a reliable connection? Switches X Routers Concentrators Hubs 2 Which of the following is sent in the link establishment and configuration negotiation phase of PPP? PAP data X LCP packets NCP packets MTU data 3 Which of the following is NOT a PPP session establishment phase? Link establishment phase X Network address negotiation phase Optional authentication phase Network-layer protocol phase 4 What does PPP use to encapsulate multiple network-layer protocols? Link control protocol Simple network management protocol X Network control protocol Dynamic host configuration protocol 5 What does PPP use to establish, configure and test the WAN link? Network control program X Link control protocol Simple network management protocol Dynamic host configuration protocol 6 Which of the following is used to configure network-layer protocols in the third phase of PPP? PAP data LCP packets X NCP packets MTU data 7 What PPP protocol is used to establish, maintain and terminate the point-to-point connection? SNMP IPX/SPX TCP/IP X LCP 8 Using PAP, how are passwords sent? X As clear text Encrypted Passwords are not used By user entry 9 What are PPP services used to establish? Dedicated links SOCKS connections LAN connections X Data links 10 What is used to indicate the beginning or end of a PPP frame? Address bits Control bits Frame sequencing X Flags 11 Which protocol was PPP created to replace? X SLIP CHAP IPX SPX 12 Using PAP, how often are the passwords sent? Every 30 seconds Only upon configuration changes Never X Repeatedly until acknowledged or terminated 13 When using CHAP, what can you do to make the remote users think they are connecting to the same router when authenticating? Use the same username. Use the same password. Use the same autonomous system number. X Use the same hostname. 14 What layer(s) of the OSI model does PPP operate at? X Data link layer Physical layer Session layer All seven layers 15 What type of handshaking occurs when using CHAP? One-way Two-way X Three-way Four-way 16 How does PPP handle individual station addresses? X PPP does not assign individual station addresses. The user assigns addresses for PPP. PPP gets addresses from a DHCP server. Routers assign PPP addresses. 17 What would cause the PPP link establishment to terminate repeatedly? Incorrect URL Browser misconfiguration Incorrect DNS entry X Loss of carrier 18 What type of data links can be used by PPP? IPX and SPX SDLC and HDLC X Synchronous and asynchronous LAP and LAPB 19 What are the two authentication options supported by PPP? PAP and clear text X PAP and CHAP CHAP and clear text PPP does not support authentication 20 What command is used to configure an interface for PPP encapsulation? router>encapsulation ppp router#encapsulation ppp router(config)#encapsulation ppp X router(config-if)#encapsulation ppp 21 Using PPP, after which phase are datagrams actually sent? Link establishment phase Network negotiation phase X Network-layer protocol phase Optional authentication phase 22 Which of the following statements describes the function of the second phase of PPP negotiation? Link termination X Link-quality determination Link establishment and configuration negotiation Network-layer protocol configuration negotiation 23 What does PPP use to configure network layer protocols? X NCP LCP LPQ LPD Take Assessment - Chapter 5 Exam - CCNA 4 Version 2.1.4 1 What type of data is carried on ISDN B channels? Analog Sideband signals Signal and control X Voice and data 2 What command is used to enter the interface configuration mode and to configure the BRI interface? >interface bri 0 #interface bri 0 X (config)#interface bri 0 (config-if)#interface bri 0 3 Which ISDN channels are for voice, video, and data? D channels X B channels Data channels C channels 4 What links are typically the lowest speed links in the enterprise? LAN links WAN links X Remote access links Frame Relay links 5 What is the function of the service profile identifiers or SPIDs? Replace the DLC number Used instead of subnetting X Identify line configuration Logical address of the ISDN router 6 What ISDN device connects four-wire ISDN wiring to the two-wire local loop facility? TA TE1 NT2 X NT1 7 When installing ISDN what will the encapsulation type be if no changes are made during the installation? VPP SLIP PPP X HDLC 8 What is the function of the framing bit in an ISDN physical-layer frame? Identifies user data X Provides synchronization Adjusts the average bit value Contention resolution 9 Which of the following commands is used to confirm BRI operations? #show version #show interface #show start-up X #show isdn status 10 What is used to terminate the BRI local loop at the customer premise? X NT1 NT2 TE1 TE2 11 What is the bit rate for a PRI connection, also known as an E1, that has 30 8-bit B channels plus one 8-bit D channel plus one 8-bit framing channel? 64 kbps X 2.048 Mbps 192 kbps 1.544 Mbps 12 A TE2 requires what additional device to attach to an ISDN connection? NT1 NT2 X TA Nothing 13 A small local network uses ISDN to connect to the corporate headquarters. The router continuously dials all day even when the users are not accessing the network. What should be checked to determine what is
dialing the router? called Cisco Works on an Windows NT workstation.
What must be loaded on each router? demonstrated? to determine which route the HR users' station
is using? |