Computer Networks Flashcards
7 cards from real AMCAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Computer Networks flashcards as text
Which layer of the OSI model is responsible for end-to-end communication and error recovery between hosts?
Answer: Transport Layer
The Transport Layer (Layer 4) provides end-to-end communication, error recovery, and flow control between source and destination hosts.
What is the maximum number of hosts that can be assigned in a Class C IP network?
Answer: 254
A Class C network has 8 host bits, giving 2^8 = 256 addresses, but 2 are reserved (network and broadcast), leaving 254 usable host addresses.
Which protocol is used to automatically assign IP addresses to devices on a network?
Answer: DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, gateways, and DNS servers to network devices.
In a network with subnet mask 255.255.255.192, how many subnets and hosts per subnet are created from a Class C address?
Answer: 4 subnets, 62 hosts
255.255.255.192 = /26, borrowing 2 bits gives 4 subnets, and the remaining 6 host bits yield 2^6 - 2 = 62 usable hosts per subnet.
Which of the following is a connection-oriented protocol at the Transport Layer?
Answer: TCP
TCP (Transmission Control Protocol) is connection-oriented, establishing a connection via a three-way handshake before data transfer begins.
What does ARP stand for and what is its primary function?
Answer: Address Resolution Protocol; maps IP to MAC addresses
ARP (Address Resolution Protocol) maps a known IP address to its corresponding MAC (physical) address within a local network segment.
Which topology provides the highest fault tolerance because every node is connected to every other node?
Answer: Mesh topology
In a full mesh topology, every node has a direct connection to every other node, providing the highest redundancy and fault tolerance.