Tài liệu Trắc nghiệm về công nghệ thông tin 2 docx

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Tài liệu Trắc nghiệm về công nghệ thông tin 2 docx

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Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 1 Take Assessment - ERouting Final Exam - CCNA Exploration: Routing Protocols and Concepts (Version 4.0) Time Remaining: 00:54:12 1 Refer to the exhibit. A network administrator is troubleshooting the OSPF network. The 10.10.0.0/16 network is not showing up in the routing table of Router1. What is the probable cause of this problem? The serial interface on Router2 is down. The OSPF process is not running on Router2. Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 2 The OSPF process is configured incorrectly on Router1. There is an incorrect wildcard mask statement for network 10.10.0.0/16 on Router2. 2 Which of the following could describe the devices labeled "?" in the graphic? (Choose three.) DCE CSU/DSU LAN switch modem hub 3 Using default settings, what is the next step in the router boot sequence after the IOS loads from flash? Perform the POST routine. Search for a backup IOS in ROM. Load the bootstrap program from ROM. Load the running-config file from RAM. Locate and load the startup-config file from NVRAM. 4 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 3 Refer to the exhibit. What are two of the routes added to the routing table of R1? (Choose two.) R 172.16.1.0/24 [120/1] via 192.168.3.0, 00:00:24, Serial0/0/0 R 192.168.1.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/1 R 192.168.9.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0 R 192.168.100.0/24 [120/1] via 172.16.1.1, 00:00:24, Serial0/0/0 R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0 5 Which statement is true regarding routing metrics? All routing protocols use the same metrics. EIGRP uses bandwidth as its only metric. Routers compare metrics to determine the best route. The larger metric generally represents the better path. Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 4 6 Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative distance values. All devices are properly configured and the destination network is advertised by both protocols. Which path will be used to transmit the data packets between PC1 and PC2? The packets will travel via R2-R1. The packets will travel via R2-R3. The traffic will be load-balanced between two paths — via R2-R1 and via R2-R3. The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path. Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 5 7 Refer to the exhibit. Which combination of IP address and subnet mask can be used on the serial interface of Router2 in or der to put the interface in the same network as the serial interface of Router1? IP 172.16.0.18, subnet mask 255.255.255.0 IP 172.16.32.15, subnet mask 255.255.255.240 IP 172.16.0.18, subnet mask 255.255.255.252 IP 172.16.32.18, subnet mask 255.255.255.252 8 Which two technologies can be used in distance vector routing protocols to prevent routing loops? (Choose two.) authentication link-state advertisements hold-down timers Spanning Tree Protocol split horizon 9 A network administrator is in charge of two separate networks that share a single building. What device will be required to connect the two networks and add a common connection to the Internet that can be shared? hub router access point Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 6 Ethernet switch 10 Refer to the exhibit. Which host has a combination of IP address and subnet mask on the same network as Fa0/0 of Router1? host A host B host C host D Showing 1 of 6 <Prev Page: 1 Next> Close Window All contents copyright 1992-2009 Cisco Systems, Inc. Privacy Statement and Trademarks. Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 7 Take Assessment - ERouting Final Exam - CCNA Exploration: Routing Protocols and Concepts (Version 4.0) Time Remaining: 00:47:29 11 A company is using static routes that are configured with an administrative distance of “1” on all routers in the network. The network administrator decides to introduce a dynamic routing protocol to reduce the manual configurations for the static routes. Which option identifies the correct procedure for the dynamic routing to take place in the network? The static routes and the dynamic routes will have the traffic alternate between them. The static routes will be automatically removed once the dynamic routing is configured. The static routes will be automatically updated with the next hop IP address once the dynamic routing is configured. The static routes must be manually removed from all routers in order for the dynamic routes to be installed in the routing table. 12 Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing table that is shown? The packet is discarded. The packet is flooded out all interfaces. Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 8 The packet is forwarded via Serial0/0/0. The packet is forwarded via FastEthernet0/0. 13 The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology? The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork. The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2. The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. 14 Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been recently installed in the network. Which set of commands is required to configure a single area OSPF for the networks that are connected to R2? Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 9 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config)# router ospf 2 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 1 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.0.0.0 0.0.0.3 area 1 15 A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? A(config)# router rip A(config-router)# passive-interface S0/0 B(config)# router rip B(config-router)# network 192.168.25.48 B(config-router)# network 192.168.25.64 A(config)# router rip A(config-router)# no network 192.168.25.32 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 10 B(config)# router rip B(config-router)# passive-interface S0/0 A(config)# no router rip 16 The command ip route 192.168.2.0 255.255.255.0 172.16.2.2 was entered into the router. After network change s were made, the new next hop for the 192.168.2.0/24 network is 172.16.5.1. What should an administrator do so that the router will use the new next hop to reach the 192.168.2.0 network? Enter the command clear ip route *. Lower the administrative distance for the new path to ensure that it is used first. Negate the original command and enter a new static route with the new next hop. Nothing. The router will learn of the new next hop and automatically update the route table. 17 Refer to the exhibit. A technician has configured the interfaces on the Router, but upon inspection discovers that interface FastEthernet0/1 is not functioning. Which action will most likely correct the problem with FastEthernet0/1? A clock rate should be added to the interface configuration. The subnet mask should be added to the interface configuration. An interface description needs to be added to the interface configuration. The no shutdown command needs to be added to the interface configuration. 18 [...]... dynamic routing processes Which route will be used to reach this network? D 1 72. 16.1.0 /24 [90 /21 95456] via 1 92. 168 .20 0.1, 00:00:09, Serial0/0/0 O 1 72. 16.1.0 /24 [110/10 12] via 1 92. 168 .20 0.1, 00:00 :22 , Serial0/0/0 R 1 72. 16.1.0 /24 [ 120 /1] via 1 92. 168 .20 0.1, 00:00:17, Serial0/0/0 I 1 72. 16.1.0 /24 [100/11 92] via 1 92. 168 .20 0.1, 00:00:09, Serial0/0/0 48 Refer to exhibit Given the topology shown in the exhibit,... configures the router with the ip route 1 72. 16.1.0 25 5 .25 5 .25 5.0 1 72. 16 .2. 2 command How will this route appear in the routing table? C 1 72. 16.1.0 is directly connected, Serial0/0 S 1 72. 16.1.0 is directly connected, Serial0/0 17 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk C 1 72. 16.1.0 [1/0] via 1 72. 16 .2. 2 S 1 72. 16.1.0 [1/0] via 1 72. 16 .2. 2 29 What is the function of the OSPF LSU... gateway for Host B is missing or improperly configured The entry for 1 92. 168.1.0 /24 is missing from the routing table of R1 The entry for 1 92. 168.1.0 /24 is missing from the routing table of R2 The entry for 1 92. 168 .2. 0 /24 is missing from the routing table of R1 The entry for 1 92. 168 .2. 0 /24 is missing from the routing table of R2 44 24 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk... route 1 92. 168 .2. 0 25 5 .25 5 .25 5.0 1 72. 16.1 .2 16 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk What is the result of running this command? Traffic for network 1 92. 168 .2. 0 is forwarded to 1 72. 16.1 .2 This route is automatically propagated throughout the entire network Traffic for all networks is forwarded to 1 72. 16.1 .2 The command invokes a dynamic routing protocol for 1 92. 168 .2. 0 27 ... FastEthernet0/0 R2# configure terminal R2(config)# passive-interface FastEthernet0/0 R2# passive-interface FastEthernet0/0 R2# configure terminal R2(config)# interface FastEthernet0/0 R2(config-if)# passive-interface FastEthernet0/0 46 Refer to the exhibit Both routers are using the RIPv2 routing protocol and static routes are undefined R1 can ping 1 92. 168 .2. 1 and 10.1.1 .2, but is unable to ping 1 92. 168.4.1... administrator adds this command to router R1: ip route 1 92. 168 .2. 0 25 5 .25 5 .25 5.0 S0/0/0 What is the result of adding this command? This route is automatically propagated throughout the network The traffic for network 1 72. 16.1.0 is forwarded to network 1 92. 168 .2. 0 A static route is established The traffic for all Class C networks is forwarded to 1 72. 16.1 .2 25 15 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info... lookup? (Choose two.) 10.0.0.0/8 64.100.0.0/16 128 .107.0.0/16 13 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk 1 72. 16.40.0 /24 1 92. 168.1.0 /24 1 92. 168 .2. 0 /24 22 Refer to the exhibit If the router loopback interfaces, FastEthernet interfaces, and OSPF priorities are configured as shown, which router would win an OSPF DR election? A B C D 23 What happens if an EIGRP network path fails... R2 is not forwarding the routing updates The 1 92. 168.4.0 network is not included in the RIP configuration of R2 26 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk RIPv1 needs to be configured 47 In a lab test environment, a router has learned about network 1 72. 16.1.0 through four different dynamic routing processes Which route will be used to reach this network? D 1 72. 16.1.0 /24 ... same information, calculate best paths, and update their routing tables 12 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk Showing 2 of 6 Take Assessment - ERouting Final Exam - CCNA Exploration: Routing Protocols and Concepts (Version 4.0) Time Remaining: 00 :28 :33 21 Refer to the exhibit Packets destined to which two networks will require the router to perform... The command network 1 72. 16.7.0 0.0.0 .25 5 area 0 on RTRB is incorrect 45 Refer to the exhibit R1 and R2 are both configured with RIPv1 Beginning from global configuration mode, what comand or commands will eliminate RIP updates on the Ethernet segment of R2? 25 Shared by www.ccna4u.org www.ccna4u.net www.ccna4u.info www.ccna4u.tk R2# configure terminal R2(config)# router rip R2(config-router)# passive-interface . 1 72. 16. 32. 15, subnet mask 25 5 .25 5 .25 5 .24 0 IP 1 72. 16.0.18, subnet mask 25 5 .25 5 .25 5 .25 2 IP 1 72. 16. 32. 18, subnet mask 25 5 .25 5 .25 5 .25 2 8 Which two technologies. R 1 92. 168.9.0 /24 [ 120 /1] via 1 72. 16.1 .2, 00:00 :24 , Serial0/0/0 R 1 92. 168.100.0 /24 [ 120 /1] via 1 72. 16.1.1, 00:00 :24 , Serial0/0/0 R 1 92. 168 .2. 0 /24 [ 120 /1]

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