Day 31 - Networking Models, Devices and Components Flashcards
What are the 7 layers of the OSI Model?
Application
Presentation
Session
Transport
Network
Datalink
Physical
What are the 4 layers of the TCP/IP Model?
Application
Transport
Internet
Network Access
What layers of the OSI Model coincide with the Network Access layer of the TCP/IP Model?
Datalink and Physical
This layer refers to interfaces between network and application software. Also, it includes authentication services.
Application
This layer defines the format and organization of data. Also, it includes encryption.
Presentation
This layer establishes and maintains end-to-end bidirectional flows between endpoints. It also includes managing transaction flows.
Session
This layer provides a variety of services between two host computers, including connection establishment and termination, flow control, error recovery, and segmentation of large data blocks into smaller parts for transmission
Transport
This layer refers to logical addressing, routing, and path determination
Network
This layer formats data into frames appropriate for transmission onto some physical medium. It also defines rules for when the medium can be used. It also defines the means by which to recognize transmission errors
Datalink
This layer defines the electrical, optical, cabling, connectors, and procedural details required for transmitting bits represented as some form of energy passing over a physical medium
Physical
This layer of the TCP/IP model represents data to the user and controls dialogue
Application
This layer of the TCP/IP model supports communication between diverse devices across diverse networks
Transport
This layer of the TCP/IP model determines the best path through the network
Internet
This layer of the TCP/IP model controls the hardware devices and media that make up the network
Network Access
What protocols are used at the Transport layer of both models?
TCP, UDP
What protocols are used at the Internet layer of the TCP/IP Model?
IP, ARP, ICMP
What are some examples of protocols used at the Application layer of the TCP/IP Model?
DNS, Telnet, SMTP, POP3, IMAP, DHCP, HTTP, FTP, SNMP
This provides the IP Address of a website or domain name so that a host can connect to it
DNS
This enables administrators to log in to a host from a remote location
Telnet or SSH
These 3 protocols facilitate the sending of email messages between clients and servers
SMTP, POP3 and IMAP
This assigns IP Addresses to requesting clients
DHCP
This protocol transfers information between web clients and web servers
HTTP(S)
This facilitates the download and upload of files between an FTP client and an FTP server
FTP
This enables network management systems to monitor devices attached to the network
SNMP
This transport layer protocol supports virtual connections between hosts on the network to provide reliable delivery of data
TCP
This supports faster, unreliable delivery of lightweight or time-sensitive data
UDP
This provides a unique global address to computer for communicating over the network
IP
This finds a hosts hardware address when only the IP Address is known
ARP
This sends error and control messages, including reachability of another host and availability of services
ICMP
This serves as the most popular LAN standard for framing and preparing data for transmission onto the media
Ethernet