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Quiz

CCNA – IOS

Sammy Javier Bar 11 questions

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Questions in this quiz (11)

  1. 1Which command encrypts all plaintext passwords?
    1. AA. Router# service password-encryption
    2. BB. Router(config)# password-encryption
    3. CC. Router(config)# service password-encryption
    4. DD. Router# password-encryption
  2. 2What can be done to secure the virtual terminal interfaces on a router? (Choose two)
    1. AA. Administratively shut down the interface.
    2. BB. Physically secure the interface.
    3. CC. Create an access list and apply it to the virtual terminal interfaces with the access-group command.
    4. DD. Configure a virtual terminal password and login process.
    5. EE. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.
  3. 3Refer to the exhibit. Why is flash memory erased prior to upgrading the IOS image from the TFTP server?


    Router# copy tftp flash
    Address or name of remote host []? 192.168.2.167
    Source filename []? c1600-k8sy-mz.123-16a.bin
    Destination filename [c1600-k8sy-mz.123-16a.bin]?
    Accessing tftp://192.168.2.167/ c1600-k8sy-mz.l23-16a.bin…
    Erasing flash before copying? [confirm]
    Erasing the flash filesystem will remove all files! continue? [confirm]
    Erasing device
    Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeee …erased
    Erase of flash: complete
    Loading c1600-k8sy-mz.l23-16a.bin from 192.168.2.167 (via Ethernet0):
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    [OK - 6888962/13777920 bytes]

    verifying checksum… OK (0x7BF3)
    6888962 bytes copied in 209.920 secs (32961 bytes/sec)
    Router#
    1. AA. The router cannot verify that the Cisco IOS image currently in flash is valid
    2. BB. Flash memory on Cisco routers can contain only a single IOS image.
    3. CC. Erasing current flash content is requested during the copy dialog.
    4. DD. In order for the router to use the new image as the default, it must be the only IOS image in flash.
  4. 4How does using the service password encryption command on a router provide additional security?
    1. AA. by encrypting all passwords passing through the router
    2. BB. by encrypting passwords in the plain text configuration file
    3. CC. by requiring entry of encrypted passwords for access to the device
    4. DD. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
    5. EE. by automatically suggesting encrypted passwords for use in configuring the router
  5. 5What is a global command?
    1. AA. a command that is available in every release of IOS, regardless of the version or deployment status
    2. BB. a command that can be entered in any configuration mode
    3. CC. a command that is universal in application and supports all protocols
    4. DD. a command that is implemented in all foreign and domestic IOS versions
    5. EE. a command that is set once and affects the entire router
  6. 6Refer to the exhibit.

    line vty 0 4
    password 7 030752180599
    login
    transport input ssh
    What is the effect of the configuration that is shown?
    1. AA. It configures SSH globally for all logins.
    2. BB. It tells the router or switch to try to establish an SSh connection first and if that foils to use Telnet.
    3. CC. It configures the virtual terminal lines with the password 030752180500.
    4. DD. It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports.
    5. EE. It allows seven failed login attempts before the VTY lines are temporarily shutdown.
  7. 7Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three)
    1. AA. ping
    2. BB. tracert
    3. CC. ipconfig
    4. DD. show ip route
    5. EE. winipcfg
    6. FF. show interfaces
  8. 8Which command shows your active Telnet connections?
    1. AA. show sessions
    2. BB. show cdp neighbors
    3. CC. show users
    4. DD. show queue
  9. 9Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?
    1. AA. enable cdp
    2. BB. cdp enable
    3. CC. cdp run
    4. DD. run cdp
  10. 10A network administrator needs to allow only one Telnet connection to a router. For anyone viewing the confguration and issuing the show run command, the password for Telnet access should be encrypted. Which set of commands will accomplish this task?
    1. AA. service password-encryption
      access-list 1 permit 192.168.1.0 0.0.0.255
      line vty 0 4
      login
      password cisco
      access-class 1
    2. BB. enable password secret
      line vty 0
      login
      password cisco
    3. CC. service password-encryption
      line vty 1
      login
      password cisco
    4. DD. service password-encryption
      line vty 0 4
      login
      password cisco

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Description
Quiz on CCNA – IOS, created by Sammy Javier Bar on 06/05/2015.
Language
English
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