Introduction to Network Systems -
Midterm
WAN (Wide Area Network) - ANS-Connects computers across a wider geographical area.
LAN (Local Area Network) - ANS-Connects computers networks which covers a small area.
CAN (Campus Area Network) - ANS-An interconnection of networks located in nearby buildings
(for example, buildings on a college campus).
PAN (Personal Area Network) - ANS-Connects devices located around a single person (ex:
bluetooth).
IP - ANS-Internet Protocol
MAC Address - ANS-Used to route data within the same local network. Switches uses them to
send ethernet frames. (XX:XX:XX:XX:XX:XX) 12-digit number. Also known as the Physical
Address.
Public IP - ANS-Provided by an internet service provider (ISP) and assigned to the router. Used
to access the Internet.
Private IP - ANS-Valid on a local area network e.g. at home or school. It is used to communicate
between the other computers and equipment on the network
ISP - ANS-Internet Service Provider
IPv4 - ANS-The dominant protocol for routing traffic on the Internet. Uses 32 Bits. Is in
Dotted-Decimal format: 192.168.1.1. Has 4.29 Billion Addresses.
IPv6 - ANS-A new protocol developed to replace IPv4, addressing the issue of IP address
exhaustion. Uses 128 Bits. Has 340 Trillion Trillion Trillion Addresses.
Switch - ANS-Device that allows connections between end devices with single network (LAN). It
uses MAC address.
Router - ANS-Device which allows network traffic to be forwarded from one network to another.
Uses IP addresses to make decisions about where to send IP Packets. The Wi-Fi is embedded
in the router.
Software - ANS-The programs and other operating information used by a computer.
, Hardware - ANS-The physical parts of a computer.
RAM - ANS-Random Access Memory. Inside the RAM is the running configuration of the device.
CPU - ANS-Central Processing Unit; the brain of the computer.
OSI - ANS-Open System Interconnection. Has 7 layers.
PDNT SPA
7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
Layer 1 of the OSI Model - ANS-- Physical Layer
- Cables, Hubs and Repeaters etc.
- Cat 5, Twisted Pair protocol
- Bits
Layer 2 of the OSI Model - ANS-- Data Link layer
- Two layers : LLC ( Logical Link Control layer) & MAC ( Media Access Control Layer)
- Frames
- LLC Provides the OS link to the device drivers
Layer 3 of the OSI Model - ANS-- Network Layer
- Routing- Assignment IP address
- Packet/Datagram
- Routers & Gateways
Layer 4 of the OSI Model - ANS-Transport Layer
Layer 5 of the OSI Model - ANS-- Session Layer
- creates the session between clients. establishes session
- uses a session ID to keep the data stream separate
Layer 6 of the OSI Model - ANS--Presentation layer
- handles syntax, encryption and compression
- specifies data format
Layer 7 of the OSI Model - ANS--Application layer
Midterm
WAN (Wide Area Network) - ANS-Connects computers across a wider geographical area.
LAN (Local Area Network) - ANS-Connects computers networks which covers a small area.
CAN (Campus Area Network) - ANS-An interconnection of networks located in nearby buildings
(for example, buildings on a college campus).
PAN (Personal Area Network) - ANS-Connects devices located around a single person (ex:
bluetooth).
IP - ANS-Internet Protocol
MAC Address - ANS-Used to route data within the same local network. Switches uses them to
send ethernet frames. (XX:XX:XX:XX:XX:XX) 12-digit number. Also known as the Physical
Address.
Public IP - ANS-Provided by an internet service provider (ISP) and assigned to the router. Used
to access the Internet.
Private IP - ANS-Valid on a local area network e.g. at home or school. It is used to communicate
between the other computers and equipment on the network
ISP - ANS-Internet Service Provider
IPv4 - ANS-The dominant protocol for routing traffic on the Internet. Uses 32 Bits. Is in
Dotted-Decimal format: 192.168.1.1. Has 4.29 Billion Addresses.
IPv6 - ANS-A new protocol developed to replace IPv4, addressing the issue of IP address
exhaustion. Uses 128 Bits. Has 340 Trillion Trillion Trillion Addresses.
Switch - ANS-Device that allows connections between end devices with single network (LAN). It
uses MAC address.
Router - ANS-Device which allows network traffic to be forwarded from one network to another.
Uses IP addresses to make decisions about where to send IP Packets. The Wi-Fi is embedded
in the router.
Software - ANS-The programs and other operating information used by a computer.
, Hardware - ANS-The physical parts of a computer.
RAM - ANS-Random Access Memory. Inside the RAM is the running configuration of the device.
CPU - ANS-Central Processing Unit; the brain of the computer.
OSI - ANS-Open System Interconnection. Has 7 layers.
PDNT SPA
7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
Layer 1 of the OSI Model - ANS-- Physical Layer
- Cables, Hubs and Repeaters etc.
- Cat 5, Twisted Pair protocol
- Bits
Layer 2 of the OSI Model - ANS-- Data Link layer
- Two layers : LLC ( Logical Link Control layer) & MAC ( Media Access Control Layer)
- Frames
- LLC Provides the OS link to the device drivers
Layer 3 of the OSI Model - ANS-- Network Layer
- Routing- Assignment IP address
- Packet/Datagram
- Routers & Gateways
Layer 4 of the OSI Model - ANS-Transport Layer
Layer 5 of the OSI Model - ANS-- Session Layer
- creates the session between clients. establishes session
- uses a session ID to keep the data stream separate
Layer 6 of the OSI Model - ANS--Presentation layer
- handles syntax, encryption and compression
- specifies data format
Layer 7 of the OSI Model - ANS--Application layer
