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Computer Networks Flashcards

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

Read the first 7 Computer Networks flashcards as text
  1. Which protocol operates at the Network Layer and is used to report errors and send diagnostic messages?

    Answer: ICMP

    ICMP (Internet Control Message Protocol) operates at the Network Layer and is used by tools like ping and traceroute to report errors and network diagnostics.

  2. What is the purpose of the three-way handshake in TCP?

    Answer: To establish a reliable connection between client and server

    The TCP three-way handshake (SYN, SYN-ACK, ACK) establishes a reliable, synchronized connection between a client and server before data transfer.

  3. Which layer of the OSI model handles MAC addresses and controls access to the physical medium?

    Answer: Data Link Layer

    The Data Link Layer (Layer 2) uses MAC addresses to transfer frames between adjacent nodes and controls access to the shared physical medium.

  4. What is the default port number for HTTPS?

    Answer: 443

    HTTPS (HTTP Secure) uses port 443 by default, providing encrypted communication over TLS/SSL.

  5. Which routing protocol uses the Bellman-Ford algorithm to calculate the shortest path?

    Answer: RIP

    RIP (Routing Information Protocol) uses the Bellman-Ford distance-vector algorithm to calculate routes, with hop count as its metric.

  6. In IPv4, what is the size of an IP address in bits?

    Answer: 32 bits

    IPv4 addresses are 32 bits long, typically written as four octets in dotted-decimal notation (e.g., 192.168.1.1).

  7. Which device operates at all seven layers of the OSI model and is used to connect networks with different protocols?

    Answer: Gateway

    A gateway operates at all seven OSI layers and translates between different network architectures or protocols, such as connecting an IP network to an X.25 network.