INSIGHTFUL A+ QUESTIONS AND ANSWERS.
Forward acknowledgment
Indicates the next expected byte from the sender.
Full-duplex mode
Allows simultaneous two-way data transmission.
Error checking
Verifies data integrity using checksums in TCP.
Sequencing of packets
Numbering segments to ensure correct order upon receipt.
Data recovery features
Allows retransmission requests for lost TCP segments.
Max Hosts Class A
Supports 16,777,214 hosts (224-2).
Max Hosts Class B
Supports 65,534 hosts (216-2).
Max Hosts Class C
Supports 254 hosts (28-2).
Transport Layer
Layer responsible for end-to-end communication.
Dynamic Host Configuration Protocol (DHCP)
Automates IP address assignment to devices.
Internet Control Message Protocol (ICMP)
Used for error messages and operational information.
Internet Group Management Protocol (IGMP)
Manages multicast group memberships.
TCP Segment
Structure containing header and data sections.
Source Port
16-bit field identifying sending port.
Destination Port