Network Concepts - OSI Model

Question 1

7 Layers of OSI Model

Answer 1

Application
Presentation
Session
Transport
Network
Data Link
Physical

Question 2

What devices are in Layer 1

Answer 2

Hub
Repeater
Ethernet Network
Fiber or Copper Cables
Radio Frequency
Cat5
Cat6

Question 3

What devices are in Layer 2

Answer 3

NIC
Bridges
Switches
MAC Addresses
VLAN
Qos

Question 4

What devices are in Layer 3

Answer 4

Routers
Multi-Layer Switches
IP Addresses
IPv4
IPv6
Qos

Question 5

What devices are in Layer 4

Answer 5

Transmission Control Protocol (TCP)
User Datagram Protocol (UDP)
Load Balancers
Firewalls
WAN Accelerators

Question 6

What devices are in Layer 5

Answer 6

H.323
NetBios
Authorization
Authentication

Question 7

What devices are in Layer 6

Answer 7

Scripting Languages (HTML, CSS, XML…)
Standard Text
Pictures (GIF, JPG, TIF) / Movie Files
Encryption Algorithms (TLS, SSL)
ASCII / Unicode

Question 8

What devices are in Layer 7

Answer 8

Email Apps (Pop3, IMAP, SMTP)
Web Browsing
DNS / FTP / SSH
HTTP & HTTPS
DHCP

Question 9

What are the 7 Protocol Data Unit (PDU) types in OSI Model

Answer 9

Data
Data
Data
Segments (TCP) | Datagrams (UDP)
Packets
Frames
Bits

Question 10

What are the 4 TCP/IP Models in OSI Model

Answer 10

Application
Transport
Internet
Physical