Cisco Semester 3 Review Packet

cisco semester 3 review packet what is the minimum amount of bandwidth that layer 2 lan switches should provide to -100 mbps users are complaining that resources housed on a remote network have become unavailable. which command can the administrator use to check whether this destination network is known to the local router? - router# show ip route what is indicated when an eigrp route is in the passive state? - the route is viable and can be used to forward traffic refer to the topology and link path costs shown in the graphic. what is the total cost of the path that ospf will use between the data_center router and bldga router? - 12 which of the following is the metric that ospf uses to determine the best route to a destination network? - cost what will prevent rip v1 updates from being correctly advertised? - the user of variable-length subnet masks which of the following tables does dual use to calculate the lowest cost routes to each destination? - neighbor table and topology table while deleting vlans from a switch, a network administrator receives the following messages, �a default vlan may not be deleted�. what did the administrator do to cause this message to be displayed? - the �no vlan 1� command was entered. the network 192.1.1.0 has been subnetted for a network design. the 192.1.1.16/28 subnet has been chosen for further subnetting to provide for point-to-point serial link addressing. how many serial link subnets can be created while minimizing the number of wasted addresses? - 4 a router is configured to connect to a trunked uplink as shown in the graphic. a packet is received on the fastethernet 0/1 physical interface from vlan 1. the packet destination address is 192.168.1.85. what will the router do with this packet? - the router will forward the packet out interface fastethernet 0/1.1. what is required for ospf routers to share routing information? - neighbor adjacencies which lan design requirement addresses user-to-user and user-to-application connectivity? - functionality when the mode led on a cisco switch is set to stat, what port status is indicated by a green flashing port led? - port is sending or receiving data

what is the purpose of a default route? - a default route will cause packets addressed to unknown destination networks to be sent to designated router interface a redundant switched topology is being installed in an enterprise. which of the following should be configured to ensure that this network operates efficiently? - stp which vlan implementation method requires less administration in the wiring closet and can provide notification if an unauthorized user attempts to connect to the network? - dynamic a switched ethernet network is experiencing unusually heavy traffic to the extent that network delays have become intolerable. while investigating the problem, a network administrator disconnects a redundant uplink between two switches. the excessive traffic quickly subsides. what was the likely cause of this problem? - broadcast storms which type of address does ospf use to initiate new adjacencies and to ensure that neighbor routers are functioning? - multicast a switch that was previously attached to another vtp management domain is added to an existing vtp domain. vlan information on all the other switches in the existing vtp management domain is lost. why did this happen? - the new switch had a higher vtp configuration revision number than the other switches in the domain and erased the vlan information on the vtp server and vtp clients in which stp sate does a switch port only receive bpdus? - blocking if eigrp routing is employed and the successor route to a destination becomes unreachable or unreliable, which of the following would be used as a replacement? - the feasible successor route in the topology table which algorithm does eigrp use to calculate routes? - dual a new color laser printer has been configured on the marketing vlan. users on the sales vlan would also like to have access to this printer. what must be done in order for the sales department users to be able to access this device? - a router must be installed and configured to connect the vlans which of the switches shown in the graphic will be elected as the root bridge of the spanning tree topology? - cat-a which command is used to copy a backup configuration file from a server to the non-volatile memory of a switch? - switch# copy tftp startup-config how many collision domains will there be in the entire network shown in the graphic if hub1 is replaced with a layer2 switch? - 4

router xyz is to be added to ospf area 0. which of the following is the correct syntax for enabling ospf on this router? - xyz(config)# router ospf 10 an ethernet switch has developed the cam table shown. what action will the switch take when it receives the frame show at the bottom of the graphic? - forward the frame out all interfaces except interface3 which action can be set to occur in response to a port security violation on a switch port? - shutdown a class c address has been assigned for use in the network shown in the graphic. using vlsm, which bit mask should be used to most efficiently provide for the number of host addresses required by router c, while wasting the fewest addresses? - /26 which ethernet device has the highest latency factor? - router an entire workgroup has lost network connectivity. after shutting down and restarting the workgroup switch in the wiring closet, it is observed that the switch system led is amber. what should be done? - the switch should be replaced in order to restore connectivity to the workgroup the spanning tree election process has taken place on a network containing five bridges. how many total root bridges have been elected? - 1 using telnet, a network administrator is unable to log in to a switch located at another office in order to make configuration changes to it. what could be the problem? - vlan 1 on the switch is not configured for tcp/ip network access which command is used to obtain the information presented in the above graphic? - show vlan brief a switch is operating in vtp client mode. what is true about the operations that can be performed by the switch? - it can only adopt vlan changes advertised from a vtp server one part of the network shown in the graphic uses igrp and another part uses eigrp. which statement is true about the network? - the route to network 192.168.1.0 will be tagged as external by the eigrp routers what is the first step in the spanning-tree process? - elect a root bridge which of the following commands can be used to configure the default management vlan on a cisco catalyst switch? - (config)# interface vlan 1 (config-subif)# ip address 10.0.0.3 255.255.255.0 (config-subif)# no shutdown employees of xyz company connect their laptop computers to the office lan using ethernet ports. the cisco switches used in the company network are configured with

port security. at which layer of the three-layer design model do these switches operate? - access which switching method increases latency and reliability more than any other method? - store-and-forward which command configures the static address shown in the graphic? - switch1(config)#mac-address-table static 00e0.2917.1884 interface fastethernet 0/4 vlan 1 when should eigrp automatic summarization be turned off? - when a router has discontiguous networks attached a network administrator located at the east site needs to check the configuration of a switch located at the corporate site. the show hosts command is entered on the east route but does not produce any output. which command can be used to gain access to the corporate lan switch assuming the switch is assigned the ip address 172.16.15.5/24? - telnet 172.16.15.5 consider the network shown in the graphic. which of the following ip addresses would be valid for a company that is leasing a single class c network address and using vlsm for maximum efficiency? - 200.1.1.64 /26 for the 50 users 200.1.1.128 /27 for the 25 users 200.1.1.160 /28 for the 10 users 200.1.1.176 / 30 for one pair of serial links 200.1.1.180 / 30 for the second pair of serial links a network corporate effective - replace

administrator is having problems with excessive collisions on the network. if the network currently uses hubs, what is the most cost way to reduce collisions? hubs with switches

a network administrator asked an assistant to remove several vlans from a switch. when the assistant entered in the no vlan 1 command an error was received. what was the cause of the error? - vlan1 is the management vlan by default and can not be deleted how do eigrp routers actively maintain neighbor relationships? - by the exchange of hello packets with neighboring routers every five seconds, by default. what is an advantage of building a network such as the one shown in the graphic? - provides multiple paths for connectivity in the event of link failures which of the following statements is true when vtp is configured on a switched network that incorporates vlans? - changes made to the network can be communicated to all switches dynamically what type of connectivity (refer to point a in the graphic) is required between sw1 and sw2? note that sw1 has vlans 2, 3, 4 and 5 configured and sw2 has vlans 5, 6, 7, and 8 configured. also, the computers on the same vlan need the ability to communicate with one another. - trunk

consider the networks shown in the graphic. which of the following is the correct configuration for router b if ospf is being used as the routing protocol? - b(config)# router ospf 1 b(config-router)# network 10.10.10.64 0.0.0.31 area 0 b(config-route)# network 10.10.10.0 0.0.0.3 area 0 which layer of the hierarchical three-layer design model combines traffic from multiple idfs? - distribution what does a constant amber system led indicate on a catalyst switch? - the switch has failed post which device provides connectivity between ip routed networks and subnetworks? - router refer to the graphic. which of the following commands is used to configure switch port 2 for the host on vlan 2? - (config)# interface fastethernet 0/2 (config-if)# switchport mode access (config-if)# switchport access vlan 2 refer to the graphic. assuming that vlans are not configured on the switch, how many broadcast domains are there? - one refer to the graphic. router a and c are completely configured and the administrator needs to configure the routing protocol on router b so that communication occurs throughout the network. which of the following commands configures routing on router b? - b(config)# router eigrp 1 b(config-router)# network 192.168.10.0 refer to the graphic above. the network has stabilized and sw-f has been elected root bridge of the stp tree. network traffic indicates that sw-a would be a better selection for the root bridge. how can the network administrator accomplish this task? - change the bridge priority of sw-a to a lower value refer to the graphic. the network administrator has determined that rtra needs to be the dr because it is the more powerful router. which of the following commands would be used to control the election process? - rtra(config)# interface fastethernet 0/0 rtra(config-if)# ip ospf priority 255 refer to the graphic. which of the following commands would be used on the router to provide communication between the two hosts connected to the switch? - interface fastethernet 0/0 no shutdown interface fastethernet 0/0.2 encapsulation dot1q 2 ip address 192.168.2.1 255.255.255.0 interface 0/0.3 encapsulation dot1q 3 ip address 192.168.3.1 255.255.255.0 refer to the graphic. switch 2 has computers attached that belong to vlan 2. switch 3 has computers attached that belong to vlan 3. switch 1 is a cisco 2926g layer 3 switch that has a route module installed. switch 1 provides connectivity

to the other switches and is used to route between vlans. at which layer of the three-layer switch design model does switch 1 operate? - distribution refer to the graphic. if the switches are new and have been cabled as shown, which switch will become the root bridge? - sc refer to the graphic. routers a and b are running eigrp and router c is igrp. which of the following is necessary for router c to automatically see routes from routers a and b? - routers a, b, and c must all use the same autonomous system number refer to the graphic. the host on vlan 2 cannot communicate with the host on vlan 3. which of the following could be the problem based on the output of the show interface fastethernet 0/1 command from the switch? - the router interface connected to switch port 1 is shut down refer to the graphic. what is the first parameter used to determine which switch is selected as the root bridge in the spanning-tree process? - lowest priority number refer to the graphic. if the network is running ospf, which subnetworks can be assigned to the serial links between router2 and the other routers shown in the diagram? - 192.1.1.192/30 and 192.1.1.196/30 refer to the graphic. both routers are configured using rip v1. both routers are sending updates about the directly connected routes. r1 can successfully ping the serial interface of r2. the routing table on r1 does not contain any dynamically learned routes from r2, and the routing table on r2 shows no dynamically learned routes from r1. what is the problem? - vlsm is not supported by rip v1 refer to the graphic. two catalyst switches are connected. both switches have ports configured for vlans 3 and 4. the hosts connected to vlan 3 on sw-a need to communicate with the hosts on vlan 3 on sw-b. conversely, the hosts connected to vlan 4 on sw-a need to communicate with hosts on vlan 4 on sw-b. which of the following is used on a cisco catalyst switch to provide this feature across a single link? - ieee 802.1q refer to the graphic. what does the mode of forwarding mean in the spanning tree process? - the switch is sending and receiving frames refer to the graphic. which of the following addresses is the most efficient summarization of the routes attached to router a? - 192.168.8.0 /22 refer to the graphic. which commands would direct outbound traffic from r1 to the isp and inbound traffic from the isp to network 200.1.1.0? - r1(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0 isp(config)# ip route 200.1.1.0 255.255.255.0 serial 0/1 refer to the graphic. consider the routing table. what is the purpose of the 128 shown in the following line and bolded in the graphic: o 192.168.12.236/30 [110/128] via 192.168.12.244, 00:35:36, serial0

- it is the ospf metric, which is cost refer to the graphic and the following configurations from the routers. router a is not receiving any ospf routes from the other routers. based on the router a and router b configurations, what is the problem? - duplicate ip address choose two which distribution layer devices enhance layer 2 switching with layer 3 functionality? (choose two.) - multilayer switches - a switch with a router module which of the following statements describe trunking? (choose two.) - trunking bundles multiple virtual links over one physical links - trunks can be configured to carry traffic for several vlans between switches which of the following statements regarding server placement are correct? (choose two.) - enterprise servers should be located in the mdf - workgroup servers should be located in an idf which strategies can a company take to enhance network reliability through redundancy? (choose two.) - eliminate single points of failure - design alternate routes to a destination how can mac address table entries be removed from a switch? (choose two.) - power cycle the switch to clear all dynamically learned addresses - the clear mac-address-table command will remove statically and dynamically configured table entries which of the following are advantages to adding a switch to a network? (choose two.) - switches create collision free domains - switches allow full allocation of bandwidth the following command was added to a router�s configuration: ip route 192.168.20.0 255.255.255.0 172.16.15.3. what will adding this command accomplish? (choose two.) - a static route will be created - information about the 192.168.20.0 network learned dynamically will be ignored as long as the static route exists. which of the following is true about spanning tree protocol? (choose two.) - eliminates logical loops in network topologies - can only e used in networks where switches are incorporated into the design why would a network administrator choose to enable authentication for ospf exchanges? (choose two.) - to prevent routing information from being falsified - to ensure that routing information comes from a valid source a company has been assigned three class c addresses and requires the use of supernetting in its addressing scheme. which routing protocol could be used to configure the company routers to support supernetting? (choose two.)

- a classless routing protocol - ospf choose three which interior routing protocols support vlsm? (choose three.) - ospf - rip v2 - eigrp which of the following are characteristics of a router-on-a-stick design for inter-vlan routing? (choose three.) - multiple logical router interfaces - one physical router interface - one logical network defined for each vlan what does the router shown in the graphic provide to the network? (choose three.) - forwarding of packets between vlans - improved efficiency in bandwidth utilization - connectivity of local hosts with remote resources the lan devices are configured as shown in the diagram. why are host1 and host2 unable to communicate? (choose three.) - a router is required to forward traffic between the hosts - the switch ports are on different vlans - the hosts are configured on different logical networks which of the following are characteristics of link-state routing protocols? (choose three.) - collection of routing information from within a defined area of the network - independent calculation of best paths to all destinations - propagation of incorrect information minimized which of the following are features of the distribution layer? (choose three.) - vlan routing - security - packet filtering with access control lists what will be the diagram? (choose - r1 will be the - r2 will be the - r4 will be the

result of ospf dr/bdr elections in the network shown in the three.) dr for the 10.1.2.0/24 network dr for the 10.1.1.0/24 network dr for the 10.1.3.0/24 network

how does an ethernet switch improve network performance? (choose three.) - allows multiple frames to be forwarded simultaneously - reduces the size of collision domains - increases the number of collision domains which of the following statements about link-state advertisements are correct? (choose three.) - lsas are multicast to all routers in the area - routers use lsas to learn about the topology of the entire network - lsas are sent when the router detest a topology change which cables are used to connect the pcs and networking devices shown in the graphic? (choose three.)

- straight-through cable from the switches to the workstations - straight-through cable from the router to the switches - crossover cable between the two switches which of the following are layers in the hierarchical design model? (choose three.) - access - distribution - core which of the following are characteristics of ospf? (choose three.) - uses shortest path - uses link-state advertisements - uses hello packets how are rip - they both - they both - they both

v1 and rip v2 similar to one another? (choose three.) use hop count as a metric have the same metric value for infinite distance use split horizon to prevent routing loops

which of the following are considered limitations of rip v1? (choose three.) - it does not support authentication - it sends updates as broadcasts on 255.255.255.255 - it does not send subnet mask information in its updates under which of the following circumstances might two routers have trouble establishing a neighbor relationship in an ospf network? (choose three.) - hello packets are not sent from either neighbor - the interfaces are on different network types - authentication passwords or keys are different which of the following are performed by a switch port that is in the forwarding state in an stp network? (choose three.) - receiving data traffic - forwarding data traffic - receiving bpdus what affects network availability? (choose three.) - throughput - response time - access to resources which of the following statements are correct concerning the default configuration of a new switch? (choose three.) - all switch ports are assigned to vlan1 - all interfaces are set to auto - the flash directory contains the ios image which statements describe features of full-duplex ethernet? (choose three.) - allows packets to be received and sent simultaneously by a host - reduces the number of collisions - allocates 100 percent of the bandwidth in both directions refer to the graphic. what will be the results of dr elections in the network presented in the graphic using ospf? (choose three.) - rtd will be dr of the 10.5.0.0/24 network - rtd will be dr of the 10.4.0.0/24 network - rtb will be dr of the 10.7.0.0/24 network

which of the following tasks must be completed to configure a router interface to serve the newly added network 192.168.10.64/27 and to advertise this network over rip v2 (choose three.) - rip v2 must be configured with the network command and the ip network number for the new network - a network host address and subnet mask must be applied to the newly activated interface - the routing protocol must be activated with the router rip and version 2 commands which of the following three.) - routers send updates - link-state protocols - link-state protocols protocols

are attributes of link-state routing protocols? (choose when a change in the network is detected converge more rapidly than distance vector protocols are less prone to routing loops than distance vector

the network administrator shown in the graphic is connected to switch3 using a lan ethernet connection. the administrator needs to verify configuration settings on the newly installed switch2. what actions must the administrator take to access switch2 with a web browser? (choose three.) - activate http service on switch2 - configure ip addressing parameters on switch2 - establish host connectivity on switch2 which of the following statements are true about routers that are running eigrp? (choose three.) - they can support multiple routed protocols - they send partial routing updates in response to topology changes - they use hello packets to inform neighboring routers of their status which of the following features do rip v1 and rip v2 have in common? (choose three.) - hop count as a metric - use split horizon - maximum hop count is 15 when configuring the networks that need to be advertised on a router using eigrp, which of the following can be configured on the router? (choose three.) - the network number - wildcard mask - autonomous system number extra: 4 refer to the graphic. which point must be reached before a bridge will forward a frame? a b c d e *f 33 what problems can occur on a redundant switched network? (choose three.) * a destination device may receive a frame more than once. * the switch may learn an incorrect mac address-to-port mapping. * broadcast storms may make the network appear down.

a frame may be dropped before reaching its destination. the network may not converge. 36 the routers in the diagram are configured for rip v2 on network 1.0.0.0. additional static routes are configured as shown in the graphic. what will ra do with a packet it receives on interface 1.1.1.1 that is destined for host 2.2.1.1 on a remote network? buffer it until it learns a route to 2.2.0.0 forward it to 1.1.1.2 forward it to 1.1.2.2 forward it to 1.1.3.2 forward it to 2.1.1.2 drop the packet 42 what do switches configured with vlans provide to an enterprise network? (choose three.) bridging between vlans * security * broadcast control physical grouping of users * logical grouping of users enlargement of collison domains 43 what is required for full-duplex ethernet transmissions? one pair of conductors in the cable and a switched connection between each node * two pairs of conductors in the cable and a switched connection between each node two pairs of conductors in the cable and a non-switched connection between each node four pairs of conductors in the cable and a non-switched connection between each node 60 what is the term that describes the cabling between the df and idf locations as shown in the graphic? horizontal cross-connect horizontal cross-cabling * vertical cross-connect vertical cross-cabling