Zusammenfassung der Ressource
Networking
- Topology Types
- Star
- All the clients are
connected to a hub or
switch
- Ring
- A series of computers
connected to each
other only in a ring
- Mesh
- All the clients
are connected to
each other directly
- Path-finding
- Bus
- All clients are connected to a
single wire
- LAN
- Local Area Network
- All the clients on the
private side of a
firewall
- WAN
- Wide Area Network
- A series of LANs connected
e.g the internet
- Protocols
- Examples
- IMAP
- A newer version of POP3 that
allows for the messages to be
saved on the server
- HTTP
- Hyper text
transfer protocol
- HTTPS
- A secure version of
HTTP
- FTP
- A way of sending
files over the
internet
- DNS
- Domain Name System
- ARP
- Address
resolution
protocol
- SMB
- Windows file share
- SMTP
- A method for sending Email
- POP3
- Sends a message from
the server to the client
then removes the
message (from the
server)
- A standardised way of
communicating something between
computers
- TCP/IP
- Application
- The layer that the user or programs interact with
- Transport
- Handles data consistency (error checking)
- Network
- Provides IPs
- Data Link
- Prepares the data for sending
- Physical
- The NICs
- IPs
- V4
- Uses 4 byte (32 bit)
addresses
- Has a limited 4’294’967’296
number of addresses
- Ranges from
0.0.0.0 to
255.255.255.255
- V6
- 340000000000000000000000000000000000000
possible
combinations
- DNS
- A system for storing
all the domain names
- When a domain is requested a
DNS server is used to get the ip
of the web server
- If the local DNS servers
cannot find the IP the DNS
servers will send requests
to other nearby servers
- If they aren't found a error
will be returned that the
destination IP isn't
reachable