Practice Test Geeks(CCST) Cisco Certified Support Technician Networking Practice Test
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Networking Fundamentals Flashcards

7 cards from real CCST 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 protocol is used to securely manage network devices remotely over an encrypted connection?

    Answer: SSH

    SSH (Secure Shell) encrypts the management session between the administrator and the network device, replacing insecure Telnet.

  2. What does 'half-duplex' mean in the context of network communication?

    Answer: Data can flow in only one direction at a time

    Half-duplex allows data to travel in both directions but not at the same time — one side must finish transmitting before the other can send.

  3. Which private IP address range is defined by RFC 1918 for Class A networks?

    Answer: 10.0.0.0 – 10.255.255.255

    RFC 1918 reserves 10.0.0.0/8 for Class A private use, providing over 16 million host addresses within a single organization.

  4. What is the primary purpose of NAT (Network Address Translation)?

    Answer: Allow multiple private IP devices to share one public IP address

    NAT allows devices with private IP addresses to access the internet by translating their addresses to one or more public IP addresses at the router.

  5. Which Ethernet frame field is used to detect transmission errors?

    Answer: FCS (Frame Check Sequence)

    The FCS field contains a CRC value calculated by the sender; the receiver recalculates and compares it to detect bit errors in the frame.

  6. Which command-line tool tests connectivity and measures round-trip time to a remote host using ICMP echo requests?

    Answer: ping

    The ping command sends ICMP Echo Request packets and reports whether the destination is reachable along with the round-trip latency.

  7. What does CSMA/CD stand for, and which network technology uses it?

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

    CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is the media access method used by legacy half-duplex Ethernet to detect and recover from frame collisions.