Home
C-CAT
Flashcards
Computer Networks

Computer Networks

Flip-card revision for computer networks — OSI model, TCP/IP, routing, switching, and protocols for fast C-CAT recall before the exam.

Card 1 of 14

Question

How many layers does the OSI model have?

Answer

7 — Physical, Data Link, Network, Transport, Session, Presentation, Application

Question

How many layers does the TCP/IP model have?

Answer

4 — Network Access, Internet, Transport, Application

Question

TCP vs UDP — which is connection-oriented and reliable?

Answer

TCP. UDP is connectionless and unreliable, but faster — used for streaming/gaming

Question

TCP three-way handshake steps

Answer

SYN → SYN-ACK → ACK

Question

Default port for HTTP

Answer

Question

Default port for HTTPS

Answer

443

Question

Usable host addresses in a /24 subnet

Answer

254 — 256 total minus one for the network address and one for the broadcast address

Question

Which device forwards data based on MAC address?

Answer

A switch (Data Link layer / Layer 2)

Question

Which device forwards data based on IP address?

Answer

A router (Network layer / Layer 3)

Question

RIP uses which routing approach?

Answer

Distance Vector — routers share their routing tables, decisions based on hop count

Question

OSPF uses which routing approach?

Answer

Link State — each router builds a full map of the network topology

Question

Which error detection method best catches burst errors?

Answer

CRC (Cyclic Redundancy Check)

Question

What switching technique does the modern internet use?

Answer

Packet switching — data split into packets, routed independently

Question

What does DNS do?

Answer

Translates human-readable domain names into IP addresses

Deck Complete!

You've reviewed all 14 cards.

📖 Study first: View Cheat Sheet