AND CORRECT ANSWERS COMPLETE
STUDY GUIDE
●● OSI Physical Layer
Answer: Transmits raw bits over cables, voltages, signals
●● OSI Data Link Layer
Answer: Handles MAC addresses, framing, error detection
●● OSI Network Layer
Answer: Routes packets using IP addresses
●● OSI Transport Layer
Answer: End-to-end delivery, TCP/UDP, error correction
●● OSI Session Layer
Answer: Manages communication sessions
●● OSI Presentation Layer
Answer: Encryption, compression, data translation
, ●● OSI Application Layer
Answer: Interfaces with applications (HTTP, FTP, DNS)
●● TCP
Answer: Reliable, connection-oriented transport protocol
●● UDP
Answer: Fast, connectionless transport protocol
●● IP Address
Answer: Logical address identifying device on network
●● MAC Address
Answer: Physical hardware address of NIC
●● Packet
Answer: Unit of transmitted network data
●● DNS
Answer: Translates domain names into IP addresses