3.1 CCNA 4 - Voucher Exam

1	Which automatic process is started first whenever power is applied to a Cisco router? empties contents of NVRAM looks for the configuration file performs a POST starts the operating system
2	Which of the following commands sets a condition to allow packets through a named ACL? adjust apply control permit
3	Which of the following authentication processes provides protection against playback attacks? CHAP DDI PAP TCP
4	Which command displays the active configuration of a router? Router# show flash Router# show configuration Router# show running-config Router# show startup-config
5	What is the default ISDN encapsulation used on Cisco ISDN routers? SLIP PPP HDLC VPP
6	How is spanning-tree path cost determined by default? total hop count sum of the costs based on bandwidth dynamically determined based on load individual link cost based on latency
7	Which command will successfully configure a router to use PPP encapsulation on one of its links? router> encapsulation ppp router# encapsulation ppp router(config)# encapsulation ppp router(config-if)# encapsulation ppp
8	Which statement describes dynamic routing correctly? Dynamic routing automatically adjusts for topology or traffic changes. Dynamic routing must always be used to reach a stub network. Dynamic routing uses route information entered by an administrator. Dynamic routing reveals everything known about an entire autonomous system.
9	The switches in the graphic are configured for VTP as shown. Select the statements that correctly describe the operation of these switches. (Choose two.) A new VLAN can be added to Switch1 and that information will be added only to Switch2. An existing VLAN can be deleted from Switch2 and that VLAN will be deleted from Switch1 and Switch4. A new VLAN can be added to Switch4 and that information will be added to Switch1, Switch2, and Switch3. A new VLAN can be added to Switch1 and that information will be added to Switch2 and Switch4. A new VLAN can be added to Switch3 and that information will be added to Switch1, Switch2, and Switch4. An existing VLAN can be deleted from Switch4 and that VLAN will be deleted from Switch1 and Switch2.
10	Which device uses logical addresses to interconnect networks or subnetworks? hub layer 2 switch router bridge repeater
11	Which device allows data communication to occur between VLANs? bridge hub switch router
12	Which of the following are types of EIGRP packets? (Choose three.) hello respond DUAL query acknowledgement holddown
13	Which Layer 4 protocol is connection-oriented and reliable? ICMP TCP TFTP UDP HTTP
14	What is the purpose of the show cdp neighbors command? to display a summary of the configurations of all directly attached Cisco devices to display information about all Cisco devices that are directly connected to a local device to display information about all Cisco networks in the WAN to display addressing information about all remote routers to display the names of all OSPF neighbors in the local area
15	Which connection modes are supported on a Frame Relay subinterface? (Choose two.) dynamic multicast multipoint multipoint-to-point point-to-point static
16	A mid-sized company has five remote locations with 55 end users at each location. The network administrator was assigned two consecutive Class C networks. Which three interior routing protocols will support this addressing scheme? (Choose three.) RIP v1 RIP v2 EIGRP OSPF BGP
17	Which type of protocol is used between routers to communicate and maintain tables? non-routable routable routed routing
18	The ISDN, Frame Relay, and HDLC encapsulations are defined at which layer of the OSI model? network session data link transport physical
19	Which layer of the OSI model provides negotiation of data transfer syntax? application presentation session transport network
20	What can be created by borrowing bits from the host portion of an IP address? extended IP addresses additional IP addresses segments subnetworks smaller collision domains
21	Which utility shows the route a packet takes to reach its destination? netstat ping Telnet traceroute
22	Refer to the graphic. This company was assigned a Class C network address for its two sites. The network administrator subnetted accordingly and configured each router with RIP. However, these routers are unable to connect to each other. What could be the problem? RIP cannot be used in place of a static route. RIPv1 was configured instead of RIPv2. RIPv2 was configured instead of RIPv1. RIP does not support stub networks.
23	Which LMI types are available with Cisco routers? ANSI, Cisco, HDLC ANSI, Cisco, q933a ANSI, Cisco, DLCI Cisco, IETF, q933a
24	Which statements describe the operation of VLANs? (Choose two.) All switch ports assigned to a VLAN are part of the same collision domain. All switch ports assigned to a VLAN are part of the same broadcast domain. Using VLANs to logically organize workgroups minimizes latency in the network. Members can be assigned to VLANs based on port ID, MAC address, or protocol. Multiple VLANs can be assigned to a single, Layer 3 network address and routers can be used to route traffic between VLANs.
25	All routers shown in the graphic are part of the same OSPF area. Which routers will PERTH engage in DR and BDR elections? (Choose three.) LONDON PALMER CAIRO FRANKLIN
26	How is RIP configured on a router? RIP is configured globally and then assigned an IP address and subnet mask. RIP is configured globally and then applied to each interface that will participate in the RIP routing process. RIP is configured individually on each interface that will participate in the RIP routing process. RIP is enabled globally and then networks are associated with the RIP routing process.
27	In an effort to minimize traffic, an administrator decided to keep web traffic from causing the ISDN link to come up by denying WWW traffic to the 192.168.20.5 remote server. Two minutes after making changes to the configuration as shown in the graphic, the administrator notices that web traffic is still passing over the link. What is the most likely cause of the problem? The dialer-group has not been applied to outbound traffic. The access-list is incorrectly configured. Broadcasts are creating "interesting" traffic and keeping the link active. The command ip access-group 128 out is missing from the bri0/0 interface.
28	Which of the following describe the Spanning Tree Protocol? (Choose two.) It prevents routing loops. It prevents broadcasts in a switched network. It operates at Layer 3. It uses BPDUs to select the shortest path in a switched network. It allows a router to load balance across redundant links. It prevents switching loops.
29	Which of the following WAN services uses two data link layer encapsulations, one for data and one for signaling? ISDN Frame Relay ATM FDDI
30	What is the length of a MAC address? 12 bits 24 bits 38 bits 48 bits
31	What is another term for latency? backoff algorithm hold-down timer propagation delay redundancy
32	Within a Frame Relay network, which methods are used by switches to inform DTEs of congestion? CCP and LMI CIR and LATE DLCI and SPID FECN and BECN
33	For the purpose of forwarding packets, which protocol manages communication between routers regarding available routes ? DNS ICMP RIP ARP CDP STP
34	What enables routers to learn of destination networks? proxy ARP CAM table exchanges host name tables routing protocols DNS lookups
35	Which command will display the name of the Cisco IOS currently running on a router? show ip interfaces show ip route show cdp nei detail show version
36	When connecting two routers from different vendors using a dedicated point-to-point connection, which type of encapsulation should be used? Cisco HDLC IETF PPP
37	Which fields are common to the TCP and the UDP segments? (Choose two.) source address sequence number acknowledgement number options checksum destination port
38	How are VLANs configured? by moving switches to different router ports by changing switchports for each host on the segment by physically moving equipment to a different network through software through hardware automatically with a plug and play module
39	Which commands will configure the router ports with IP addresses as shown in the diagram? (Choose three.) R1(config)# interface s0 R1(config-if)# ip address 10.1.1.146 255.255.255.252 R1(config)# interface e0 R1(config-if)# ip address 10.1.7.254 255.255.252.0 R1(config)# interface s0 R1(config-if)# ip address 10.1.1.147 255.255.255.0 R1(config)# interface e0 R1(config-if)# ip address 10.1.4.0 255.255.252.0 R2(config)# interface e0 R2(config-if)# ip address 10.1.16.1 255.255.255.0 R2(config)# interface e0 R2(config-if)# ip address 10.1.31.254 255.255.240.0
40	Which mode will a router enter if it is unable to locate a valid startup configuration file during the boot process? boot mode config mode RXBOOT mode ROM monitor mode setup mode turnkey mode
41	What are the advantages of OSPF in comparison with RIP v2? (Choose two.) OSPF provides support for Classless Interdomain Routing but RIP v2 does not. OSPF may result in faster convergence, due to triggered updates. OSPF's built-in features make it easy to design, implement, and troubleshoot. OSPF routers build a complete view of the network, reducing the potential for routing loops. OSPF sends periodic link state advertisements to keep the link active. OSPF routers have lower memory and processor requirements.
42	Which packet-switched WAN technologies are characterized by the use of Permanent Virtual Circuits (PVCs)? Frame Relay and ISDN Frame Relay and X.25 ISDN and X.25 ISDN only
43	Which statement is correct concerning routing and routed protocols? A routed protocol allows the routers to communicate with other routers and maintain tables for a routing protocol. A routing protocol allows routers to communicate with other routers and maintain tables for a routed protocol. Routers only need to use routing protocols to work properly. There is no difference between routed and routing protocols.
44	Which of the following are commonly used routing metrics? (Choose three.) ARP hop count window size delay load media type
45	Which representations have the same meaning when representing the subnet mask? /10 and 255.224.0.0 /15 and 255.255.0.0 /21 and 255.255.248.0 /24 and 255.255.0.0
46	Which router parameters can be set from global configuration mode? (Choose two.) IP address Telnet password hostname console password subnet mask enable secret password
47	How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0? 30 256 2046 2048 4094 4096
48	What is used to resolve known IP addresses to unknown MAC addresses? ARP DNS DHCP RARP
49	What are the effects of LAN segmentation using a switch? (Choose three.) dedicated bandwidth between source and destinations enlarged collision domains decreased broadcast domains increased number of collision domains increased latency in the network
50	Network broacast traffic from the Business Department is needlessly reaching the Engineering Department LAN. What can be done to contain this traffic within the Business Department network while maintaining connectivity with enterprise servers and the Internet? (Choose two.) Establish a VTP domain to contain the extraneous traffic. Provide greater bandwidth to the Engineering Department LAN. Utilize full-duplex Ethernet on the Engineering Department LAN. Place the business department on a separate subnet and route between networks. Change the switch IP address to an address on the Engineering Department LAN. Create separate VLANs and subnets for the two departments and route between the two.
51	Which address does a bridge use to build its bridging table? destination IP address destination MAC address source IP address source MAC address
52	What are the functions of a Layer 2 Ethernet switch? (Choose three.) preventing broadcasts increasing available bandwidth per user decreasing the size of collision domains isolating traffic among segments routing traffic between different networks decreasing the number of broadcast domains
53	In reference to the TCP/IP model, which protocol is used to determine the network access layer address associated with a known Internet layer address? ARP ICMP IP RARP TCP UDP
54	Which ISDN channel is used for call setup? B D X SS-7 PRI BRI
55	Which of the following is the reference point between the NT1 and the phone company network? R S T U
56	How is the number 225 represented in binary? 11001111 11011011 11110011 11100001
57	What is the command syntax used to create a subinterface? Router(config-if)# int s0.115 point-to-point Router(config-if)# int s0 subinterface 115 point-to-point Router(config-if)# subinterface 115 point-to-point Router(config-if)# subinterface s0.115 point-to-point
58	Which item best describes the ping command? It uses ICMP echo packets to verify connectivity at the TCP/IP internet layer. It checks for connectivity at the TCP/IP application layer. It uses Time to Live (TTL) values to generate messages from each router used along a path. It verifies sliding window settings at the TCP/IP transport layer.
59	What are two authentication options supported by PPP? (Choose two.) clear text PAP CHAP LCP SLIP
60	An ISDN BRI line can be described as which of the following? 2B + D 2D + B 23B + D 23D + B
61	Which of the following is used for the delivery of EIGRP routing information? Reliable Transport Protocol (RTP) Diffusing Update Algorithm (DUAL) Protocol-Dependent Modules (PDMs) Routing Table Maintenance Protocol (RTMP)
62	Which device connects four-wire ISDN subscriber wiring to the conventional two-wire local loop? NT1 NT2 TE1 TE2
63	Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately? application presentation session transport network
64	Given a router that has already been configured, what is the correct loading sequence when powering on? bootstrap, RAM, operating system bootstrap, configuration file, operating system bootstrap, operating system, configuration file operating system, configuration file, RAM

3.1 CCNA 4 - Practice Final

1	Which of the following LCP options can be configured for PPP? (Choose three.) CHAP Stacker IPCP CDPCP Multilink
2	ITU-T Q.921 specifies the use of which protocol for sending control and signaling messages between the router and the ISDN switch? HDLC IPCP LAPB LAPD NCP SS7
3	Which of the following describe functions of the Point-to-Point protocol with regards to the OSI model? (Choose three.) PPP uses Layer 3 of the OSI model to establish and maintain a session between devices. PPP operates at all layers of the OSI model. PPP uses the data link layer to configure such options as error detection and compression. PPP provides a mechanism to multiplex several network layer protocols. PPP uses Network Control Protocols (NCP) to test and maintain connectivity between devices. PPP can be configured on both synchronous and asynchronous serial interfaces.
4	Which of the following statements regarding point-to-point subinterfaces are true? (Choose two.) A point-to-point subinterface on one router must be connected to a similar subinterface on a remote router. Each point-to-point subinterface connection is configured with its own subnet. The DLCIs configured on the remote and local routers must be the same for the PVC. LMI frames are not transmitted through a subinterface. Routing updates in point-to-point networks are not subject to the split-horizon rule.
5	How will data be transmitted from the router to the ISP if the router has the two links shown in the graphic? Both links will transmit data at the same rate. 1544 bits can be transmitted simultaneously from the router over the T1 line. Both links will transmit bits one by one. The 56K link will transmit a maximum of 53 bits at the same time.
6	A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task? routable translation dynamic translation static translation port address translation
7	Which of the following statements are true about Frame Relay? (Choose three.) Frame Relay operation is defined by a series of ISO standards. Frame Relay is a packet switched, connection-oriented, wide area network service. Frame Relay only supports point-to-point connections. A router can be considered as data terminal equipment (DTE) in a frame relay system. Frame Relay is a cell switched, connection-oriented, wide area network service. Frame Relay networks use a subset of the HDLC protocol to carry information.
8	Why would data frames be discarded in a Frame Relay network? (Choose two.) The frame contains an incorrect IP address. An error has been detected in computing the frame check sequence. There is not enough bandwidth dedicated for the data contained in the frame. Data is transmitted at a rate greater than the access speed. The frame contains an incorrect DLCI.
9	Which of the following can be concluded from the router output displayed in the graphic? (Choose two.) The local DLCI number of this PVC is 100. The interface has been configured for subinterfaces and this map is for subinterface 0. Inverse ARP has determined the remote ip address as 10.140.1.1. The LMI type is ANSI (0x64). There is currently no congestion on the link.
10	When planning simple WAN connections for a small company, which feature of the three layer hierarchical model makes it a good choice for the WAN topology. It provides for redundancy. It allows for easy WAN expansion in case of company growth. It is less expensive. It provides faster connection time. It provides less latency and jitter.
11	The command output shown in the graphic was taken from a Cisco 806 broadband router. Which kind of address translation is in effect on this router? static dynamic overload private public
12	A network administrator has been asked to provide the network in the United States with an ISDN WAN link. The router available to provide the WAN connection is a non-modular Cisco router with two serial connections. What must be done to adapt one of the serial interfaces of this router for the ISDN connection? Nothing. The router is already suitable. Purchase a BRI WAN interface card to install in the router. Purchase a U interface to install in the router. Purchase a TA/NT1 device to install on the router.
13	How does Frame Relay technology process frames that contain errors? (Choose two.) Frame Relay services depend on the upper layer protocols to handle error recovery. It requires the receiving device to request that the sender retransmit erroneous frames. FECN, BECN, and DE bits are set in the frames to minimize errors. The receiving device drops any frames that contain errors without notifying the sender. The frame relay switch notifies the sender that errors were detected.
14	Which statements about DHCP are true? (Choose three.) DHCP uses TCP. DHCP uses UDP. DHCP sends messages to the server on port 67. DHCP sends messages to the server on port 68. DHCP sends messages to the client on port 67. DHCP sends messages to the client on port 68.
15	Which command configures the SPID on the first B channel of an ISDN interface? Router(config)# isdn spid0 spid-number [ldn] Router(config)# isdn spid1 spid-number [ldn] Router(config-if)# isdn spid0 spid-number [ldn] Router(config-if)# isdn spid1 spid-number [ldn]
16	Which command would produce the output shown in the graphic? show ip dhcp server statistics show ip dhcp binding debug ip dhcp server events debug ip dhcp binding
17	Which commands can be used to identify which DLCIs are active? (Choose two.) show frame-relay map show frame-relay lmi show frame-relay pvc show frame-relay interface show interfaces show ip route
18	When PPP authentication is enabled, which of the following may be checked before establishing a PPP link between two devices? (Choose two.) the enable password on the remote device the ip host configuration on the remote device the security server database for the username and password of the remote device the hostname and enable password on the local device the local database for the username and password of the remote device
19	Which of the following are supported by a BRI interface on a router? (Choose two.) Two independent channels that can carry analog data with a bandwidth of 64 KHz. A single 128 Kbps digital bearer channel. Two multiplexed channels carrying digital data. A single 64 Kbps signaling channel. A multiplexed data channel that can only handle SS7 information. A 16 Kbps delta channel used for signaling purposes.
20	An administrator consoled into the Jelly router needs to telnet to the Butter router. What DLCI will the Jelly router place in the frame to perform this operation? 110 115 220 225
21	What is placed in the address field of a frame that will travel from the DC office of ABC company to the Orlando office? MAC address of the Orlando router MAC address of the DC router 192.168.1.25 192.168.1.26 DLCI 100 DLCI 200
22	The WAN connection for a nationwide company with 250 offices must support constant connections to core layer services for file sharing, and occasional Internet access. Which combination of WAN technologies will meet these needs with minimum expense? Frame Relay PVC for Internet access and ATM for file server access Frame Relay PVC for Internet access and ISDN for file server access ISDN for Internet access and X.25 for file server access ISDN for Internet access and Frame Relay PVC for file server access
23	What does a DLCI of 0 indicate about a frame? (Choose two.) This is the first data frame sent by the router. This is a management frame. The encapsulation type is Cisco. The encapsulation type is IETF. The LMI type is Ansi or q933a. The LMI type is Cisco.
24	A company needs a WAN connection that is capable of transferring voice, video, and data at a minimum data rate of 155 Mbps. Which WAN connection is the best choice? X.25 DSL ATM ISDN BRI ISDN PRI
25	What are three features of the CHAP protocol? ( Choose three.) exchanges a random challenge number during the session to verify identity sends authentication password to verify identity prevents transmission of login information in plain text disconnects the PPP session if authentication fails initiates a two-way handshake
26	Which of the following devices is used to establish the communications link between the customer equipment and the local loop for digital lines? terminal adapter modem CSU/DSU PBX switch ISDN switch Frame Relay Switch
27	Which command would be used to exclude the IP address 192.168.24.5 from the DHCP address pool on a router? Router(dhcp-config)# ip dhcp excluded-address 192.168.24.5 Router# ip dhcp excluded-address 192.168.24.5 Router(config-excluded)# ip dhcp excluded-address 192.168.24.5 Router(config)# ip dhcp excluded-address 192.168.24.5 Router(config)# excluded-address 192.168.24.5 Router(dhcp-config)# excluded-address 192.168.24.5
28	A router needs to forward a message received from a host. How does the router identify the correct VC to forward the message? (Choose two.) The router forwards the frame to all ports in the network and learns the address from the reply frame. The destination host IP address is embedded in the DLCI. The router searches Inverse ARP tables for maps of DLCIs to IP addresses. A table of static mappings can be searched. The router broadcasts a request for the required IP address.
29	Which of the following switching types will allow the communication devices in the provider's network to be shared and only allocated to an individual subscriber during data transfer? circuit-switched packet-switched frame-switched dedicated-switched lines lease-switched
30	Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.) 192.168.146.0/22 172.10.25.0/16 172.31.0.0/16 20.0.0.0/8 10.172.92.8/29
31	Which of the following describes the PAP protocol? (Choose two.) sends unencrypted authentication passwords performs a three-way handshake allows repeated login attempts uses the remote router hostname to verify identity sends a random challenge throughout the session
32	Which of the following protocols can be used to encapsulate data traffic sent from a router BRI interface? (Choose two.) Link Access Protocol - Data High-Level Data Link Control Logical Link Control Serial Data Link Control Point to Point protocol Binary Synchronous Control protocol
33	Which statement explains why basic DSL is an unpopular WAN connectivity choice for enterprise computer departments that support home users? DSL offers insufficient bandwidth to home users. DSL requires the installation of new cables, which is not always possible for home users. DSL dialup connection time is too slow for business use. DSL has limited geographical availability.
34	Which of the following are functions of the Local Management Interface used in Frame Relay networks? (Choose three.) exchange information about the status of virtual circuits map DLCIs to network addresses provide flow control provide error notification provide congestion notification send keepalive packets to verify operation of the PVC
35	An ISDN router is configured for DDR as shown in the graphic to provide Internet connectivity for the company. Immediately after a user in the company attempts opens a web browser to connect to the Internet, another user in the company tries to download a file using FTP. What will happen? (Choose two.) The user that opened the browser will connect to the Internet because the DDR link will consider this traffic interesting. The Internet user will be disconnected because the FTP data will cause the DDR link to shut down. The DDR link will allow the FTP traffic because it is interesting. The DDR link will not allow the FTP traffic because it is not interesting. The FTP connection will fail because the DDR link is already in use for the Internet connection. The FTP connection will succeed because the web user already opened the DDR link.
36	Which command will provide for CHAP authentication if the hostname on a challenging router is tampa with a password of florida? username tampa password florida username tampa florida hostname tampa password florida hostname tampa florida
37	Which of the following is a function of a DCE device? determines the next-hop address for a packet multiplexes signals from several sources adapts information for use on a service provider's network used to directly connect two DTEs to simulate a WAN network
38	Which operating systems support multiuser capability? (Choose three.) Linux Windows 98 Windows ME Windows XP Windows 2000
39	Why was NAT created? (Choose two.) to create firewalls on routers to conserve IP addresses to translate domain names into IP addresses to map network addresses to the corresponding data link address to hide internal addresses from external devices
40	Which of the following terms describes a device that will put data on the local loop? DLCI CO DCE DTE PRI BRI
41	How many separate B channel circuits can be provisioned on a PRI interface that uses a T1 line for connectivity? 2 16 23 24 30 128
42	The LAN attached to the Ethernet interface of the Raleigh router shown in the graphic is addressed with private IP addresses. If one public IP is assigned to the company, which commands could be used in a configuration that allows all devices with private IPs in this network to access the Internet? (Choose two.) ip nat inside source list 1 interface serial0 overload ip nat outside source list 1 interface serial0 overload ip nat inside serial0 ip nat inside source list 1 pool Raleigh overload ip nat inside Raleigh overload ip inside nat source list 1 interface serial0 Raleigh
43	Which of the following describes the WAN devices and cabling shown in the graphic? (Choose two.) A null-modem cable is used between RouterD and DeviceC for connectivity. A DB-25 or DB-9 serial cable is connected to interface S0/0 of RouterA. DeviceB and DeviceC are DCE devices. The same encoding scheme must be used by DeviceB and DeviceC. A synchronous serial connection exists between DeviceB and DeviceC.
44	Which of the following are commonly used as Data Communications Equipment? (Choose two.) modem router CSU/DSU ISDN Switch Frame Relay Switch
45	What does the command debug isdn q921 display? exchange of call setup and teardown messages PAP and CHAP authentication traffic Layer 2 messages on the D channel protocol errors and statistics Layer 2 messages on the B channel
46	A technician is testing the functionality of a recently installed router. The technician is unable to ping the serial interface of a remote router. The technician executes the show interface serial0/0 command on the local router and sees the following line in the output: Serial0/0 is up, line protocol is down What are possible causes for this command output? (Choose three.) remote CSU/DSU failure serial cable missing interface shutdown keepalives not being sent clocking signal missing