100-490 Exam Details

  • Exam Code
    :100-490
  • Exam Name
    :CCT Routing & Switching (RSTECH)
  • Certification
    :CCT Routing & Switching
  • Vendor
    :Cisco
  • Total Questions
    :60 Q&As
  • Last Updated
    :Dec 07, 2025

Cisco 100-490 Online Questions & Answers

  • Question 31:

    Which command displays a list of file systems that are available on Cisco devices?

    A. show memory
    B. show directory
    C. show file system
    D. show version

  • Question 32:

    Which command displays information about the carrier network, cell site, and available service?

    A. show cellular unit network
    B. show cellular unit radio
    C. show cellular unit hardware
    D. show cellular unit profile

  • Question 33:

    Which two commands set the configuration register value? (Choose two.)

    A. rommon>confreg 0x2102
    B. router(config)#confreg 0x2102
    C. rommon>config-register 0x2102
    D. router(config)#configuration-register 0x2102
    E. router(config)#config-register 0x2102

  • Question 34:

    Which type of memory stores the configuration of a router or switch by default?

    A. RAM
    B. ROM
    C. NVRAM
    D. flash

  • Question 35:

    Which type of physical connector does a Gigabit Ethernet port typically use?

    A. RJ-9
    B. RJ-45
    C. DB-25
    D. RJ-11

  • Question 36:

    Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)

    A. Layer 2 address B. keepalive
    C. Layer 3 address
    D. encapsulation type
    E. interface status

  • Question 37:

    Which router port is used for dial-in access to the router for CLI management purposes and does not usually pass normal network traffic?

    A. Fast Ethernet
    B. channelized serial
    C. AUX
    D. Gigabit Ethernet

  • Question 38:

    Which two features are associated with single-mode fiber-optic cable? (Choose two.)

    A. consists of a single strand of glass fiber
    B. has higher attenuation that multimode fiber
    C. carries a higher bandwidth that multimode fiber
    D. costs less than multimode fiber
    E. operates over less distance than multimode fiber

  • Question 39:

    An Ethernet interface is up and the line protocol is down. What are two possible causes? (Choose two.)

    A. There is a speed or duplex mismatch with the remote device.
    B. There is a Layer 2 mismatch in the encapsulation type.
    C. The Ethernet interface has been manually disabled.
    D. Keepalives are not being received by the local device.
    E. The Ethernet cable might not be attached properly.

  • Question 40:

    What is the correct IPv6 address notation?

    A. 2001:0DB8::/128
    B. 2001:0DB8:0::
    C. 2001:0DB8::1:1:1:1:1
    D. 2001:0DB8:130F:0000:0000:7000:0000:140B

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