CCNA | COMPLETE PRACTICE QUESTIONS, ANSWERS & STUDY GUIDE
2026/2027
Name 4 end devices - correct answer ✔✔PC, Printer, Laptop, Server
Name 3 transport media - correct answer ✔✔Ethernet cable, Fiber optic cable, WIFI
What does the physical layer of OSI cover? - correct answer ✔✔Transfer of raw data (bits)
across cable or radio waves
What does the data link layer of OSI cover? - correct answer ✔✔MAC address, frames, error
detection
What does the network layer of OSI cover? - correct answer ✔✔IP Addresses, Routers, Packet
What does the transport layer of OSI cover? - correct answer ✔✔TCP, UDP, end to end
communication
What does the session layer of OSI cover? - correct answer ✔✔Manages sessions, connections
and authentication between applications
What does the presentation layer of OSI cover? - correct answer ✔✔Translates, encrypts and
compresses data, SSL/TSL, ASCII
What does the application layer of OSI cover? - correct answer ✔✔Interfaces with users and
applications, HTTP, FTP, SMTP
What does the network interface of TCP/IP cover? - correct answer ✔✔MAC addressing,
ethernet, wifi
What does the network layer of TCP/IP cover? - correct answer ✔✔IPv4 and IPv6 for routing
What does the Transport layer of TCP/IP cover? - correct answer ✔✔TCP for reliability and UPD
for speed
What does the application layer of TCP/IP cover? - correct answer ✔✔HTTP, SMTP and DNS
What are the benefits of subnetting? - correct answer ✔✔Optimize network performance,
improve security, efficiently allocate IP addresses
2026/2027
Name 4 end devices - correct answer ✔✔PC, Printer, Laptop, Server
Name 3 transport media - correct answer ✔✔Ethernet cable, Fiber optic cable, WIFI
What does the physical layer of OSI cover? - correct answer ✔✔Transfer of raw data (bits)
across cable or radio waves
What does the data link layer of OSI cover? - correct answer ✔✔MAC address, frames, error
detection
What does the network layer of OSI cover? - correct answer ✔✔IP Addresses, Routers, Packet
What does the transport layer of OSI cover? - correct answer ✔✔TCP, UDP, end to end
communication
What does the session layer of OSI cover? - correct answer ✔✔Manages sessions, connections
and authentication between applications
What does the presentation layer of OSI cover? - correct answer ✔✔Translates, encrypts and
compresses data, SSL/TSL, ASCII
What does the application layer of OSI cover? - correct answer ✔✔Interfaces with users and
applications, HTTP, FTP, SMTP
What does the network interface of TCP/IP cover? - correct answer ✔✔MAC addressing,
ethernet, wifi
What does the network layer of TCP/IP cover? - correct answer ✔✔IPv4 and IPv6 for routing
What does the Transport layer of TCP/IP cover? - correct answer ✔✔TCP for reliability and UPD
for speed
What does the application layer of TCP/IP cover? - correct answer ✔✔HTTP, SMTP and DNS
What are the benefits of subnetting? - correct answer ✔✔Optimize network performance,
improve security, efficiently allocate IP addresses
