Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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Infrastructure Services Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Infrastructure Services flashcards as text

  1. Which DHCP message does a client send to request an IP address from a specific DHCP server after receiving multiple offers?

    Answer: DHCPREQUEST

    DHCPREQUEST is broadcast by the client to select one server's offer and inform all other servers their offers were declined.

  2. What is the default lease time for DHCP addresses on a Cisco IOS router?

    Answer: 1 day

    Cisco IOS DHCP server defaults to a 1-day (86400 seconds) lease time unless configured otherwise.

  3. A router needs to forward DHCP broadcasts from clients on one subnet to a DHCP server on another subnet. Which command enables this?

    Answer: ip helper-address

    The 'ip helper-address' command on the client-facing interface forwards DHCP broadcasts as unicast to the specified DHCP server.

  4. Which DNS record type maps an IPv4 hostname to an IP address?

    Answer: A

    An 'A' record maps a fully qualified domain name (FQDN) to an IPv4 address.

  5. What well-known UDP port does NTP use?

    Answer: 123

    NTP operates on UDP port 123 to synchronize time between network devices.

  6. Which NTP stratum level is assigned to devices that synchronize directly from an atomic clock or GPS source?

    Answer: Stratum 1

    Stratum 1 devices synchronize directly from a Stratum 0 reference clock (atomic/GPS) and serve as primary NTP servers.

  7. A Cisco router is configured with 'ntp server 192.168.1.1'. What role does this router play?

    Answer: NTP client

    The 'ntp server' command configures the router as an NTP client that synchronizes its clock from the specified server.