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Networking Fundamentals Flashcards

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

Read the first 7 Networking Fundamentals flashcards as text

  1. Which IEEE standard defines the Spanning Tree Protocol used to prevent loops in a switched network?

    Answer: IEEE 802.1D

    IEEE 802.1D defines the original Spanning Tree Protocol (STP), which blocks redundant paths to create a loop-free Layer 2 topology.

  2. What is the purpose of a VLAN trunk port?

    Answer: To carry traffic for multiple VLANs between switches using 802.1Q tagging

    A trunk port carries tagged frames for multiple VLANs between switches or between a switch and a router, using IEEE 802.1Q encapsulation.

  3. What does CSMA/CD stand for and where is it used?

    Answer: Carrier Sense Multiple Access / Collision Detection – used in traditional Ethernet

    CSMA/CD is the media access control method used in traditional half-duplex Ethernet, where stations detect collisions and retransmit after a random back-off.

  4. Which protocol dynamically assigns IP addresses, subnet masks, gateways, and DNS server information to hosts?

    Answer: DHCP

    DHCP (Dynamic Host Configuration Protocol) automatically provides hosts with IP addressing parameters, eliminating the need for manual static configuration.

  5. What is the broadcast address for the subnet 192.168.10.64/26?

    Answer: 192.168.10.127

    The /26 subnet starting at 192.168.10.64 has a block size of 64; the broadcast address is 192.168.10.64 + 63 = 192.168.10.127.

  6. What function does NAT (Network Address Translation) primarily serve?

    Answer: Translates private IP addresses to a public IP for Internet communication

    NAT allows multiple devices using private RFC 1918 addresses to share one or more public IP addresses when communicating over the Internet.

  7. Which cable type uses light pulses to transmit data and is immune to electromagnetic interference?

    Answer: Fiber optic

    Fiber optic cables transmit data as light through glass or plastic strands, making them immune to EMI and capable of much longer distances than copper.