The IT Stuff

DHCP (Dynamic Host Configuration Protocol):

DHCP server  automatically configured all the IP configuration information for your client machine like DNS Servers addrese , Default Gateway,Wins Server, Domain Prefix etc
It minimize the administrative burden
It By using DHCP there is no chance to conflict ip address.
Support multiple scope like Unicast,multicast and superscope.
Using as a relay agent [...]

MCSE 70-290 Part-1

tarting up Windows Server 2003
When you first boot into Windows Server 2003, your first screen is the Manage Your Server homepage. This startup utility can helpful in  managing the roles of this server.
Administrative Tools
Administrative Tools are most used utilities by the  system administrators.
To properly manage or for easy administration use the Microsoft Management [...]

Logical Topologies: are two types
1.    Work group.
2.    Domain
Workgroup (peer to peer):

Collection of computers connected together to share the resources.
No Servers or Server Operating Systems are used.
Only Client Operating System is mostly used.
Any Operating Systems like, DOS, Windows 95, Windows  98, workstation, Windows 2000 Pro, and Windows  XP Pro can be configured as work-group model.
[...]

Network Topologies:
The way of cabling or physical layout is called topology or the architecture of a network is called topology
For example Bus, Star, Ring, and Mesh Topologies.
Bus Topology:
Components of Bus Topology:
1.    Co-axial cable (back bone cable)
2.    T- connectors
3.    BNC (British Network Connector)
4.    Terminator
5.    Patch cable
Disadvantages of Bus:
If anything goes wrong with backbone cable whole [...]

Networking devices:
Repeater or Hub:

Connects two segments of your network cable.
Retimes and regenerates the signals to proper amplitudes and sends them to the other segments.
In ethernet topology, a hub is used as a repeater.
Require a small amount of time to regenerate the signal. This can cause a propagation delay which can affect network communication when there [...]