Network Protocols Flashcards
They define rules and conventions for data transfer between
network devices, ensuring successful and secure data communication.
Protocols
Network protocols can be broadly grouped into three categories
Communication Protocols
Security Protocols
Management Protocols
These control the format and transmission of data.
Communication Protocols
These help protect data as it traverses networks.
Security Protocols
These help maintain and govern network resources.
Management Protocols
OSI meaning
Open Systems Interconnection Model
It’s a conceptual framework used to understand network
interactions in seven layers:
OSI Model
OSI Model Seven Layers
Physical Layer
Data Link Layer
Network Layer
Transport Layer
Session Layer
Presentation Layer
Application Layer
: Deals with the physical connection between devices and the
transmission of binary data over those connections.
Physical Layer
: Provides error detection, flow control, and frames the data.
Data Link Layer
Manages routing, forwarding, and addressing.
Network Layer
Ensures data is transferred completely and correctly.
Transport Layer
Manages sessions and controls dialogues between computers.
Session Layer
Translates data formats and encrypts/decrypts data
Presentation Layer
Provides services for applications to exchange data.
Application Layer
Common Communication Protocols
HTTP/HTTPS
FTP/SFTP
SMTP/IMAP/POP3
TCP/IP
UDP
Security Protocols
SSL/TLS
IPSec
SSH
WPA/WPA2
Network Management Protocols
SNMP
ICMP
DHCP
is an application layer protocol used for
distributing, collaborating, and hyper-linking information on the World Wide
Web
HTTP
is the secure version, using encryption to increase
security.
HTTPS
) is used for transferring files across networks
FTP
on the other hand, provides secure file
access and transfer functionalities over encrypted SSH connections.
SFTP
Protocol used to send emails.
SMPTP
allows users to retrieve messages
from a mail server.
IMAP
enables retrieving the emails from a server to a
local machine.
POP3
nsures reliable
communication, while IP (Internet Protocol) handles addressing and
forwarding of packets.
TCP/IP
is a simpler message-based connectionless
protocol. It is used when speed is desirable and error correction is less
critical, such as streaming videos.
UDP
are
cryptographic protocols designed to provide secure communication over the
internet
SSL/TLS
encrypts and authenticates IP packets,
ensuring secure exchange over IP networks.
IPSec
is used to remotely log into and manage computers by
providing secure, encrypted communications.
SSH
These protocols enhance wireless security, with __being widely adopted
as it offers stronger security features over its predecessor.
WPA/WPA2
is used for collecting and
organizing information about managed devices on IP networks.
SNMP
delivers error messages and
operational information, often utilized in diagnostic tools like ping and
traceroute.
ICMP
automatically assigns IP
addresses and other network settings to devices, simplifying network
administration.
DHCP
