OSI Relevance

Question 1

Layer Number 1

Layer Name, Devices and Protocols

Answer 1

( Layer Name)
Physical

( Devices )
Cables , Hubs

( Protocols )
Ethernet, Cabling Protocols

Question 2

Layer Number 2

Layer Name, Devices and Protocols

Answer 2

( Layer Name)
Data Link

( Devices )
Switches

( Protocols )
MAC, ARP, NDP, VLANs

Question 3

Layer Number 3

Layer Name, Devices and Protocols

Answer 3

( Layer Name)
Network

( Devices )
Router, Layer 3 switch

( Protocols )
IPv4, IPv6, IPsec, ICMP

Question 4

Layer Number 4

Layer Name, Devices and Protocols

Answer 4

( Layer Name)
Transport

( Devices )
N/A

( Protocols )
TCP, UDP

Question 5

Layer Number 5

Layer Name, Devices and Protocols

Answer 5

( Layer Name)
Session

( Devices )
N/A

( Protocols )
N/A

Question 6

Layer Number 6

Layer Name, Devices and Protocols

Answer 6

( Layer Name)
Presentation

( Devices )
N/A

( Protocols )
N/A

Question 7

Layer Number 7

Layer Name, Devices and Protocols

Answer 7

( Layer Name)
Application

( Devices )
Proxies, Application-proxy firewalls, web application firewalls, web-security gateways, UTM security appliances

( Protocols )
DNS, FTP, FTPS, HTTP, HTTPS, IMAP4, LDAP, POP3, RDP, SCP, SFTP, SMTP, SNMP, SSH, Telnet and TFTP