Practice Test Geeks(ACSP) Aruba Certified Switching Professional Practice Test
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Routing Protocols & IP Addressing Flashcards

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  1. Which ArubaOS-CX command verifies that a static route has been successfully installed in the forwarding plane?

    Answer: show ip fib

    The 'show ip fib' command displays the Forwarding Information Base, confirming routes are programmed into hardware for actual packet forwarding.

  2. A network uses the address block 10.0.0.0/8 and needs to create 100 subnets with at least 500 hosts each. Which subnet mask satisfies both requirements?

    Answer: /23

    A /23 provides 512 host addresses (510 usable) and allows up to 128 subnets within 10.0.0.0/8, satisfying both requirements.

  3. In BGP, what is the effect of prepending your own AS number multiple times to the AS_PATH attribute before advertising a route?

    Answer: It makes the path appear longer, making it less preferred by external peers

    AS path prepending artificially lengthens the AS_PATH, making the route less preferred by BGP peers that use AS path length as a selection criterion.

  4. On ArubaOS-CX, which command enables OSPF on a specific interface rather than using the 'network' command under the OSPF process?

    Answer: ip ospf area 0.0.0.0

    ArubaOS-CX supports interface-level OSPF activation using 'ip ospf area ' configured directly on the interface.

  5. Which address does an IPv6 host use when communicating with the DHCPv6 server during stateful address assignment?

    Answer: The link-local address as the source

    DHCPv6 messages are sourced from the host's link-local address since a global unicast address has not yet been assigned.

  6. An ArubaOS-CX switch needs to summarize the subnets 172.16.0.0/24, 172.16.1.0/24, 172.16.2.0/24, and 172.16.3.0/24 into a single advertisement. Which summary address is correct?

    Answer: 172.16.0.0/22

    The four /24 subnets share the first 22 bits (172.16.0-3), so 172.16.0.0/22 is the correct summary covering all four networks.

  7. What is a floating static route in ArubaOS-CX and how is it implemented?

    Answer: A static route with a higher administrative distance than the primary dynamic route, used as a backup

    A floating static route is configured with an AD higher than the dynamic routing protocol, so it only appears in the RIB when the dynamic route is removed.