Solid State Drive (SSD)...

Traditional hard drives are available in larger capacities and cost less per storage unit than solid state drives, however. This makes them a cheaper choice if you need to store a lot of data.

Solid state drives transfer data at a much faster rate than traditional drives, which can help improve performance. But they do carry another major disadvantage: While they may not break down due to moving parts, they have a limited number of read / write sessions based on the quality of the flash memory used. Frequent file saving can be detrimental to the life of a solid state drive.

Difference bet domain and workgroup.

Domains

Domains are collections of computers grouped for management purposes; they share a group name. Domains let users’ access resources using a single logon. Administrators don’t have to create multiple user accounts for a single user to give that user access to all domain resources.

From a security perspective, a domain is a set or collection of computers that share a common security database and a common security policy. NT domains advance the concepts seen in LAN Manager for UNIX and LAN Server domains. Each domain has a unique domain name.

Workgroups
The terms workgroup and domain are used extensively in Microsoft networking and refer to the management mechanisms available to network members. Workgroups imply decentralized management, whereas domains imply centralized control.

Workgroups are collections of computers grouped just for viewing purposes; each computer user is responsible for managing its security functions. A workgroup can consist of NT Workstations, NT Servers, UNIX computers running Server Message Block (SMB) services, and others. They communicate using a common set of networking protocols at all seven layers of the OSI model

Device manager....

The Device Manager is a tool included with Microsoft Windows operating systems that allows the user to display and control the hardware attached to the computer. When a piece of hardware is not working, the offending hardware is highlighted where the user can deal with it.

Blade server..

Blade servers are currently the most efficient computer devices and are often used by modern businesses as the backbone of the office computer system.
A blade server is a computer system on a motherboard, which includes processor(s), memory, a network connection, and sometimes storage.

Windows 7 / Windows 98 shared access problem

Windows 7 is using only NTLMv2 authentication for remote access but your Windows 98 terminal is trying to authenticate with LM/NTLM. These old authentication methods block Windows 7.

You can change the authentication level in gpedit.msc:

Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\Network Security: LAN Manager authentication level

Change IP address of computer from Command prompt....

To change IP and default gateway:
netsh int ip set address "local area connection" static 192.168.0.101 255.255.255.0 192.168.0.254

To change DNS:
netsh int ip set dns "local area connection" static 192.168.0.254 primary

 

Set static IP address to getting an address from DHCP:
netsh interface ip set address name=”Local Area Connection” source=dhcp

Workgroups ...

The terms workgroup and domain are used extensively in Microsoft networking and refer to the management mechanisms available to network members. Workgroups imply decentralized management, whereas domains imply centralized control. 

Workgroups are collections of computers grouped just for viewing purposes; each computer user is responsible for managing its security functions. A workgroup can consist of NT Workstations, NT Servers, UNIX computers running Server Message Block (SMB) services, and others. They communicate using a common set of networking protocols at all seven layers of the OSI model.

FAT file system want to convert in to NTFS file system which command

Convert E: /FS: NTFS ("E"- Drive latter)

DHCP in Windows Server

Dynamic         - Means that clients IP address may change
Host               - Indicates that this is a system for clients, e.g. XP machines
Configuration  - A clue that you are in charge of the options, e.g. DNS Server
Protocol         - The rules controlling the flow of packets between client and server

What is DHCP?

Dynamic Host Configuration Protocol. It is used to Assign IP address automatically to the Client Machine.

DHCP is a protocol used by networked computers (clients) to obtain IP addresses and other parameters such as the default gateway, subnet mask, and IP addresses of DNS servers from a DHCP server. It facilitates access to a network because these settings would otherwise have to be made manually for the client to participate in the network.
 
DHCP operations fall into four basic phases. These phases are IP lease request, IP lease offer, IP lease selection, and IP lease acknowledgement
DHCP discovery
DHCP offers
DHCP requests
DHCP acknowledgement

DHCP, like BOOTP runs over UDP, utilizing ports 67 and 68.

What is IP address?

IP address is an identifier for a Computer or Device.

Class A IP Address 1 – 126, Class B IP Address 128 – 191, Class C IP Address 192 –223. And 127.0.0.1 is Loop back IP address. It will check the System Connectivity. Each machine connected to the Internet has an address known as an Internet Protocol address (IP address). The IP address takes the form of four numbers separated by dots, for example: 192.168.0.1 

You want to see System IP address goes to

Start- Run- Type cmd – type ipconfig /all

You want to confirm any system connected in the system network type ping 192.168.0.1 (192.168.0.1 this system IP address)

 

 

Network Switch

A network switch is a small hardware device that joins multiple computers together within one local area network (LAN).
A switch, in the context of networking is a high-speed device that receives incoming data packets and redirects them to their destination on a local area network (LAN). A LAN switch operates at the data link layer (Layer 2) or the network layer of the OSI Model and, as such it can support all types of packet protocols.

Network Switch symbol ....

Router.....

A router is a device that forwards data packets along networks.

This is a hardware device that routes data  from a local area network (LAN) to another network connection. A router acts like a coin sorting machine, allowing only authorized machines to connect to other computer systems. Most routers also keep log files about the local network activity.

Router symbol ....

Data center

A data center is a centralized repository, either physical or virtual, for the storage, management, and dissemination of data and information organized around a particular body of knowledge or pertaining to a particular business.
Data centres can be in-house, located in a company’s own facility, or outsourced with equipment being colocated at a third-party site.