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OSPF & EIGRP

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  • OSPF & EIGRP

    OSPF & EIGRP

    Q1. Which of the following factors determines the OSPF router ID when configuring a router with both physical and logical interfaces?
    A. The lowest network number of any interface.
    B. The highest network number of any interface.
    C. The highest IP address of any logical interface.
    D. The middle IP address of any logical interface.
    E. The lowest IP address of any physical interface.
    F. The highest IP address of any physical interface.
    G. The lowest IP address of any logical interface.

    Q12. What could be the rationale behind using passive-interface command when configuring a router?
    A. Allows interfaces to share common IP addresses.
    B. Allows an interface to remain up without the aid of keepalives.
    C. Allows a router to send routing and not receive updates via that interface.
    D. Allows a routing protocol to forward updates that is missing its IP address.
    E. Allows a router to receive routing updates on an interface but not send updates via that interface.

    Q27. What are the characteristic of link state routing protocols? (Choose three.)
    A. The exchange of advertisement is triggered by a change in the network.
    B. All routers exchange routing tables with each other in a multipoint network.
    C. Packets are routed based upon the shortest path to the destination.
    D. Paths are chosen depending on the cost efficiency factor.
    E. Every router in an OSPF area is capable of representing the entire network topology.
    F. Only the designated router in an OSPF area can represent the entire network topology.

    Q32. You are a network technician at CiscoSystem. A newly appointed trainee wants to know what the basics of distance vector and link state routing protocols are.
    What would your reply be? (Choose two.)
    A. Distance vector protocols send the entire routing table to directly connected neighbors.
    B. Distance vector protocols are responsible for sending updates to all networks listed in the routing table.
    C. Link state protocols are responsible for sending the entire routing table to the whole network.
    D. Link state protocols send updates regarding their own links status to all other routers on the network.


    Q82. What will be the calculated OSPF cost of an OSPF interface that has been configured with the bandwidth 64 command?
    A. 1 B. 10
    C. 64 D. 1562
    E. 64000 F. 128000

    Q84. Which of the following statements is true regarding the command sequence illustrated below? (Choose three.)
    CiscoSystemA(config)# interface loopback 0
    CiscoSystemA(config-if)# ip address 192.168.16.24 255.255.255.255

    A. It creates a virtual, software only, interface.
    B. It provides a way to test the convergence of OSPF routing updates.
    C. The mask of 255.255.255.255 is called a host mask.
    D. It uses a wildcard mask of 255.255.255.255.
    E. It ensures that an interface is always active for OSPF processes.
    F. These commands can only be issued to configure serial interfaces.

    Q86. Which of the statements mentioned below describes the OSPF routing protocol? (Choose three.)
    A. It confines network instability to a single area of network.
    B. It increases the routing overhead of the network
    C. It supports VLSM
    D. It routes between Autonomous Systems.
    E. It allows extensive control of routing update

    Q111. Why is it a wise decision to use a hierarchical design on OSPF networks? (Choose three options.)
    A. To reduce the complexity of router configuration
    B. To speed up convergence
    C. To confine network instability to single areas of the network
    D. To reduce routing overhead
    E. To lower costs by replacing routers
    F. To decrease latency by increasing bandwidth













    Q112. You are a network technician at CiscoSystem, Inc. You have been asked to add a new router into an established OSPF network. The CiscoSystem networks attached to the new router do not appear in the routing tables of the other OSPF routers. Given the information in the partial configuration shown below, what configuration error is causing this problem?
    Router(config)# router ospf 1
    Router(config-router)# network 10.10.10.0 255.0.0.0 area 0
    A. The AS is not correctly configured
    B. The network subnet mask is incorrectly configured
    C. The network wildcard mask is configured incorrectly
    D. The network number is not correctly configured
    E. The process id is configured incorrectly

    Q113. You are a network technician at CiscoSystem, Inc. You need to configure a router to run OSPF and to add network 192.168.10.0/24 to OSPF area 0.
    Which of the following commands do you need to achieve this? (Choose two.)
    A. Router(config-router)# network 192.168.10.0 0.0.0.255 0
    B. Router(config-router)# network 192.168.10.0 0.0.0.255 area 0
    C. Router(config-router)# network 192.168.10.0 255.255.255.0 area 0
    D. Router(config)# router ospf 0
    E. Router(config)# router ospf 1
    F. Router(config)# router ospf area 0

    Q115. OSPF routing makes use of areas. What are the characteristics of these areas? (Choose two options.)
    A. Hierarchical OSPF networks do not need multiple areas
    B. Multiple OSPF areas must connect to area 0
    C. Single area OSPF networks must be configured in area 1
    D. Areas can be assigned any number from 0 to 63535
    E. Area 0 is called the backbone area
    F. Each OSPF area need to be configures with a loopback interface

    Q120. On which of the following types of network will OSPF elect a backup designated router?
    A. Point-to-point and point-to-multipoint casting
    B. Nonbroadcast and broadcast multipoint casting
    C. Point-to-point and multi-access broadcasting
    D. Point-to-multipoint and multi-access broadcasting
    E. Nonbroadcast and broadcast multiaccess

    Q124. Which of the following EIGRP route entries would be described as a feasible successor?
    A. A primary route, stored in the routing table
    B. A backup route, stored in the routing table
    C. A backup route, stored in the topology table
    D. A primary route, stored in the topology table

    Q131. Which of the following are features of the routing protocol EIGRP? (Select two options.)
    A. Has a maximum hop count of 25
    B. Can differentiate between internal and external routes
    C. Uses a 32-bit metric
    D. Can maintain only one routing table
    E. Need all networks to use the same subnet mask
    F. Supports only one routed protocol

    Q132. Which of the different types of packets mentioned below is sent by routers running OSPF to maintain connectivity with neighboring routers?
    A. OSP packets
    B. hello packets
    C. keepalive packets
    D. dead interval packets


    Q133. Your trainee wants to know what information a router runs through a link-state protocol to build and maintain its topological database. What can you tell her? (Select two options.)
    A. LSAs from other routers
    B. Beacons received on point-to-point links
    C. hello packets
    D. Routing tables received from other routers
    E. SAP packets sent by other routers
    F. TTL packets from exclusive routers

    Q139. When dealing with point-to-point networks, which address are OSPF hello packets addressed to?
    A. 127.0.0.1 B. 192.168.0.5
    C. 223.0.0.1 D. 172.16.0.1
    E. 224.0.0.5 F. 254.255.255.255.255

    Q149. One of your trainees wants to know what the calculated OSPF cost of the link will be if the interface has been configured with the bandwidth 64 command. What will you tell her?
    A. 128000 B. 64000
    C. 1582 D. 10
    E. 1







    Q163. One of the features of the OSPF routing protocol is that it maintains a topology database of information about other routers in the network.
    Which of the following is a characteristic of this topology database?
    A. All entries in the topology database will be included on each router.
    B. All routers in the same OSPF area will have one topology database.
    C. The Dijkstra algorithm is used in the creation of the topology database.
    D. LSA packets are used to update and maintain the topology database

    Q173. Which of the following statements can you use to describe the process identifier that is used to run OSPF on a router? (Select two options.)
    A. It is needed to identify a unique instance of an OSPF database.
    B. It is an optional parameter only necessary if multiple OSPF processes are used.
    C. It is locally significant.
    D. It is globally insignificant
    E. All routers in the same OSPF area must have the same process ID to exchange routing information.
    Q175. Study the Exhibit below carefully:

    You are the network administrator at CiscoSystem. CiscoSystemA is using multiple routing protocols according to the exhibit. Assuming that all networks that are connected are advertised, there are no redistribution of routes, and all other parameters are set to default, which path do you think will CiscoSystemA use to reach CiscoSystemD?
    A. It will take the route via CiscoSystemB.
    B. It will take the route via CiscoSystemC.
    C. It will use the route with the highest metric.
    D. It will load balance over both paths.
    E. It will take the shortest route

    Q212. Assuming that all OSPF routers in a particular area are configured with identical priority values, which of the following values would a router use for OSPF router ID when it does not have a loopback interface?
    A. The IP address of the first Fast Ethernet interface.
    B. The IP address of the console management interface.
    C. The highest IP address among its active interfaces.
    D. The lowest IP address among its active interfaces.
    E. The priority value until a loopback interface is configured.

    Q224. You are a technician at CiscoSystem. Your newly appointed CiscoSystem trainee wants to know what the maximum number of hops are that OSPF allows before marking a network as unreachable.
    What would your reply be?
    A. 15
    B. 16
    C. 99
    D. 255
    E. Unlimited
    F. OSPF doesn't use hop count

    Q230. You are a trainee technician at CiscoSystem. Your instructor tells you that the OSPF routing protocol maintains a topology database of information about other routers in the network. Your instructor wants to know what the characteristics of this database are.
    What would your reply be? (Choose two)
    A. The Dijkstra SPF algorithm is used to create the topology database.
    B. All entries listed in the topology database will be included in the routing tables on each router.
    C. The topology database is a routing table for which no path decisions have been made.
    D. Each router in the OSPF area will have a unique topology database.
    E. The topology database is updated by link-state advertisements (LSAs).

    Q234. You are the network administrator at CiscoSystem. CiscoSystem has an OSPF network. You want to observe the DR/BDR election process in the CiscoSystem network. What command can you issue in privileged EXEC mode to accomplish this?
    A. CS#show ip ospf interface
    B. CS#Show ip ospf priority
    C. CS#Show ospf neighbor detail
    D. CS#Show ospf processes
    E. CS#Show ospf neighbor state


    Q251. You are a network administrator at CiscoSystem. To routers on the CiscoSystem network, router TK1 and router TK2 are configured to run OSPF. However, the two routers cannot establish an adjacency relationship on their common Ethernet link. In troubleshooting this problem you issue the show ip ospf interface e0 command for routers TK1 and TK2. The output from the command is shown in the following
    exhibit:
    TK1: Ethernet is up, line protocol is up
    Internet address 192.168.1.2/24, Area 0
    Process ID 1, Router ID 192.168.31.33, Network Type BROADCAST, Cost: 10
    Transmit Delay is 1 sec, State DR, Priority 1
    Designated Router (ID) 192.168.31.33, Interface address 192.168.1.2
    No backup designated router on this network
    Time intervals configured, Hello 5, Dead 20, Wait 20, Retransmit 5
    TK2: Ethernet0 is up, line protocol is up
    Internet address 192.168.1.1/24, Area 0
    Process ID 2, Router ID 192.168.31.11, Network Type BROADCAST, Cost: 10
    Transmit Delay is 1 sec, State DR, Priority 1
    Designated Router (ID) 192.168.31.11, Interface address 192.168.1.1
    No backup designated router on this network
    Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Based on the exhibit, what is the probable cause of this problem?
    A. The OSPF area is misconfigured.
    B. The priority on TK2 should be set lower.
    C. The cost on TK2 should be set lower.
    D. The hello and dead timers are misconfigured.
    E. You need to add a backup designated router to the network.
    F. The OSPF process ID numbers do not match.

    Q256. You are the network administrator at CiscoSystem. Your newly appointed CiscoSystem trainee wants to know what the default administrative distance of OSPF routing protocol is.
    What will your reply be?
    A. 90
    B. 100
    C. 110
    D. 120
    E. 170

    Q257. You are the network administrator at CiscoSystem. You must configure a router for load balancing across 4 unequal cost paths on the CiscoSystem network.
    Which of the following routing protocols can you use? (Choose two.)
    A. RIP v1
    B. RIP v2
    C. IGRP
    D. EIGRP
    E. OSPF
    F. VLSM


    Q260. Which of the following routing protocols minimize the effects of the problems created by discontiguous networks? (Choose three.)
    A. RIP v1
    B. RIP v2
    C. EIGRP
    D. IGRP
    E. OSPF
    F. VLSM

    Q274. With regard to the OSPF Hello protocol, which of the following statements are true? (Choose two.)
    A. The OSPF Hello protocol provides dynamic neighbor discovery.
    B. The OSPF Hello protocol detects unreachable neighbors in 90 second intervals.
    C. The OSPF Hello protocol maintains neighbor relationships.
    D. The OSPF Hello protocol negotiates correctness parameters between neighboring interfaces.
    E. The OSPF Hello protocol uses timers to elect the router with the fastest links at the designated router.
    F. The OSPF Hello protocol broadcast hello packets throughout the internetwork to discover all routers that are running OSPF.

    Q287. You are the network administrator at CiscoSystem. You are troubleshooting an EIGRP problem on Router TK1. You want to check the IP addresses as well as the retransmit interval and the queue counts for the devices which have established an adjacency with Router TK1.
    What command should you issue?
    A. TK1#show ip eigrp adjacency
    B. TK1#show ip eigrp topology
    C. TK1#show ip eigrp interfaces
    D. TK1#show ip eigrp neigbors

    Q300
    Your boss, CiscoSystem, is curious about EIGRP route information. She asks you which EIGRP route information are held in RAM and maintained through the use of hello and update packets.
    What should you tell Tess? (Select two.)
    A. Neighbor Table
    B. SRF Table
    C. RTP Table
    D. Topology Table
    E. Quey Table

    Q306
    Exhibit: bandwidth 64
    You work as a technician at Cisco.com. You have an OSPF interface configured with the command displayed in the exhibit.
    What is the calculated OSPF cost of this link?
    A. 1
    B. 10
    C. 1562
    D. 64000
    E. 128000

    Q311
    Your boss at Cisco.com is interested in the concept of OSPF routing areas.
    What are the characteristics of OSPF areas? (Choose three.)
    A. Each OSPF area requires a loopback interface to be configured.
    B. Areas may be assigned any number from 0 to 65535.
    C. Area 0 is called the backbone area.
    D. Hierarchical OSPF networks do not require multiple areas.
    E. Multiple OSPF areas must connect to area 0.
    F. Single area OSPF networks must be configured in area 1.

  • #2
    ? bạn post nhiều câu hỏi như vậy mình cũng không biết bạn thắc mắc câu nào, mỗi lần bạn chỉ nên post một vài câu mà bạn nghi ngờ trong TK sai, và nên đưa ra những ý kiến của riêng bạn.

    ...
    And we are all connected to each other
    In a circle, in a hoop that never ends
    ...

    Comment


    • #3
      Re: OSPF & EIGRP

      Originally posted by Thang Tam
      OSPF & EIGRP



      Q120. On which of the following types of network will OSPF elect a backup designated router?
      A. Point-to-point and point-to-multipoint casting
      B. Nonbroadcast and broadcast multipoint casting
      C. Point-to-point and multi-access broadcasting
      D. Point-to-multipoint and multi-access broadcasting
      E. Nonbroadcast and broadcast multiaccess

      ai giải thích chi tiết hộ cái?

      Q131. Which of the following are features of the routing protocol EIGRP? (Select two options.)
      A. Has a maximum hop count of 25
      B. Can differentiate between internal and external routes
      C. Uses a 32-bit metric

      D. Can maintain only one routing table
      E. Need all networks to use the same subnet mask
      F. Supports only one routed protocol

      B, có phải EIGRP cho phép 1-> đa process?

      Q139. When dealing with point-to-point networks, which address are OSPF hello packets addressed to?
      A. 127.0.0.1 B. 192.168.0.5
      C. 223.0.0.1 D. 172.16.0.1
      E. 224.0.0.5 F. 254.255.255.255.255

      hello packets trỏ tới địa chỉ multicasst ah? tôi chưa rõ những kiểu địa chỉ này, ai biết?


      Q173. Which of the following statements can you use to describe the process identifier that is used to run OSPF on a router? (Select two options.)
      A. It is needed to identify a unique instance of an OSPF database.
      B. It is an optional parameter only necessary if multiple OSPF processes are used.
      C. It is locally significant.
      D. It is globally insignificant
      E. All routers in the same OSPF area must have the same process ID to exchange routing information.

      ko hiểu lém!

      RK
      CCxx 2004
      Goal: MCXX2008
      :106:

      Comment


      • #4
        Q120:Trong OSPF chỉ trong mạng multiaccess mới có bầu DR,BDR.
        Q131:EIGRP quản lý bằng AS, và hình như có cho phép đa process.
        Q139:vì trong OSPF, các hello packet sử dụng các gói tin multicast để gửi:
        224.0.0.5 :cho các OSPF router
        224.0.0.6:cho các DR/BDR router
        Q173:vì khi cấu hình OSPF, thì ta có cấu hình thêm các process trên đó, và nó chỉ có ý nghĩa cục bộ trong một router, chỉ có tác dụng phân biệt các phiên routing của OSPF.

        ...
        And we are all connected to each other
        In a circle, in a hoop that never ends
        ...

        Comment

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