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  • Question

  • You want to create a standard access list that denies the subnet of the following host: 172.16.198.94/19. Which of the following would you start your list with?


  • Options
  • A. access-list 10 deny 172.16.192.0 0.0.31.255
  • B. access-list 10 deny 172.16.0.0 0.0.255.255
  • C. access-list 10 deny 172.16.172.0 0.0.31.255
  • D. access-list 10 deny 172.16.188.0 0.0.15.255

  • Correct Answer
  • access-list 10 deny 172.16.192.0 0.0.31.255 

    Explanation
    First, you must know that a /19 is 255.255.224.0, which is a block size of 32 in the third octet. Counting by 32, this makes our subnet 192 in the third octet, and the wildcard for the third octet would be 31 since the wildcard is always one less than the block size.

    • More questions

    • 1. Which of the following is an example of a standard IP access list?

    • Options
    • A. access-list 110 permit host 1.1.1.1
    • B. access-list 1 deny 172.16.10.1 0.0.0.0
    • C. access-list 1 permit 172.16.10.1 255.255.0.0
    • D. access-list standard 1.1.1.1
      • Discuss
    • 2. You are connecting your access point and it is set to root. What does Extended Service Set ID mean?

    • Options
    • A. That you have more than one access point and they are in the same SSID connected by a distribution system.
    • B. That you have more than one access point and they are in separate SSIDs connected by a distribution system.
    • C. That you have multiple access points, but they are placed physically in different buildings.
    • D. That you have multiple access points, but one is a repeater access point.
      • Discuss
    • 3. Which of the following series of commands will restrict Telnet access to the router?

    • Options
    • A. Lab_A(config)#access-list 10 permit 172.16.1.1
      Lab_A(config)#line con 0
      Lab_A(config-line)#ip access-group 10 in
    • B. Lab_A(config)#access-list 10 permit 172.16.1.1
      Lab_A(config)#line vty 0 4
      Lab_A(config-line)#access-class 10 out
    • C. Lab_A(config)#access-list 10 permit 172.16.1.1
      Lab_A(config)#line vty 0 4
      Lab_A(config-line)#access-class 10 in
    • D. Lab_A(config)#access-list 10 permit 172.16.1.1
      Lab_A(config)#line vty 0 4
      Lab_A(config-line)#ip access-group 10 in
      • Discuss
    • 4. A network administrator is connecting hosts A and B directly through their Ethernet interfaces, as shown in the illustration. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts?

      1. A crossover cable should be used in place of the straight-through cable.
      2. A rollover cable should be used in place of the straight-through cable.
      3. The subnet masks should be set to 255.255.255.192.
      4. A default gateway needs to be set on each host.
      5. The subnet masks should be set to 255.255.255.0.

    • Options
    • A. 1 only
    • B. 2 only
    • C. 3 and 4 only
    • D. 1 and 5 only
    • E. 2 and 5 only
      • Discuss
    • 5. Which of the following describe router functions?

    • Options
    • A. Packet switching
    • B. Packet filtering
    • C. Internetwork communication
    • D. Path selection
    • E. All of the above
      • Discuss
    • 6. Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

    • Options
    • A. PPP
    • B. HDLC
    • C. Frame Relay
    • D. ISDN
      • Discuss
    • 7. The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

    • Options
    • A. 802.1
    • B. Frame Relay
    • C. HDLC
    • D. PPP
    • E. PAP
      • Discuss
    • 8. You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?

    • Options
    • A. You didn't boot the router with the correct command.
    • B. NVRAM is corrupted.
    • C. The configuration register setting is incorrect.
    • D. The newly upgraded IOS is not compatible with the hardware of the router.
      • Discuss
    • 9. Which WAN encapsulations can be configured on an asynchronous serial connection?

      1. PPP
      2. ATM
      3. HDLC
      4. SDLC
      5. Frame Relay

    • Options
    • A. 1 and 2
    • B. 2 and 4
    • C. 3, 4 and 5
    • D. All of the above
      • Discuss
    • 10. When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

    • Options
    • A. The Frame Relay encapsulation on the physical interface
    • B. The local DLCI on each subinterface
    • C. An IP address on the physical interface
    • D. The subinterface type as point-to-point
      • Discuss

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