Server's Hardware

 Server Hardware

                Server is a high performance computer which provide services to other computers.

HDD- Hotswable hdd which we can disconnect and reconnect during system is running. Multiple hdds are used in server. (Raid is the feature in which multiple hdd work as a single hdd.) Generally SCSI hdds are used in Server.

RAM- Multiple RAMs are used in Server. ECC(Error Checking Connection), Memory monitoring software, Thermal sencing and more heat sink for cooling.

Processor- We use big performance and multiple processors, like as I9/I7/Xeon/Itanium. It may be 4/8/16/24/48/64/128. Software to monitor hardware local and network PCs- Ms Map tool kit.

SMPS- Multiple hotswable SMPS are used in server. In desktop we use 450w to 600w smps. But in server we use 900-1200 watt smps we use.

Cabinet(System Case)- Liquid cooling fan multiple cooling fan are used in server. Because Server room should be cool. Many companies uses Rack to connect hardware parts to make a server.

Motherboard- In server motherboard, There are multiple RAM slots/multiple CPU socket/multiple chipsets.

Cluster- Cluster is a group of servers which work on same services and their configuration are same. There are two types of cluster-                                                                           1. Network Load Balancing                                                                                             2. Fail over cluster

What is difference between Telnet and SSH?

 

Telnet VS SSH
Full Form	Tele Communication Network	Secure Shell
Access	Command Line Remote Access	Command Line Remote Access
TCP Port no	23	22
Security	Unsecure	Secure
Authentication	Weak	Strong
Suitable for	Suitable for Unix	Suitable for Cent OS, Ubuntu, Linux, Unix, Redhat
Encryption	It sends every data and Password is unencrypted	It sends every data and Password is Encrypted
Protection	No such protection is have to protect	SSH protection from is have to protect ip spoffing, DNS spoffing

 

How many types of Laptop?

 Types of Laptop

        There are 5 types of laptop differ according to functionality, weight and price.

1. 2-in-1 convertible

                    These types of laptops have a swivel/rotating hinge attaching the keyboard to the display. You can fold the screen up to 180 degrees so that it lies flat on the keyboard. It is now being replaced by laptops with detachable screens that also work as tablets. All latest 2-in-1's have touch screen. 

                    It is also known as Hybrid Laptops.

2. Rugged Laptops

                    Rugged laptops are designed to operate in harsh and extreme conditions, dusty or wet environments and in areas with strong vibrations. They are commonly used by public safety services such as the police, military, medical emergency and firefighting departments. They are manufactured and supplied only to such organizations.They are usually bulkier and more expensive than regular laptops. They have rubber sheeting below the keyboard, passive cooling, sealed connector covers and are made from strong magnesium alloy. 

3. Subnotebooks

                    A subnotebook is very portable since it has less weight and a long battery life (exceeding ten hours). Most subnotebooks don't have a removable media drive to lessen the weight. In such cases the laptop is paired with a docking station.

4. Desktop Replacement Laptops

                        A desktop replacement laptop provides capabilities similar to a desktop. It is usually heavier and larger than standard laptops. It look like a desktop and sometimes it looking uncomfortable like carry, change places.

5. Netbooks- 

                        Netbooks are economical, light-weight, energy efficient laptops suited for internet access and wireless communication. Most netbooks do not have an  optical disk drive and are preloaded with Windows 8 and Windows 10. Most netbooks have one memory slot supporting up to 2gb storage. This limits how the netbook functions beyond the basic functions i.e. emailing and internet.

Which is best for You and Your employees, Laptop VS Desktop

 Laptop VS Desktop

        Today we are going talking about what we should buy Laptop or Desktop. Here whatever your use. You will be sure what is good for you like Laptop or Desktop. I comparison on this Budget, Convenience, Processing Speed, Usability, Keyboard, Upgrading, Gaming and other. So I hope after reading this post your doubt has been permanently delete from your mind.

• Price- The starting price is for Desktop Computer would be Rs. 15,000. Here is good for Buying Desktop compare on budget. On the other side, the cost of an entry level Laptop would be Rs. 20,000 or more, depending on your brand and specification.

• Convenience- If you are buying Desktop then Carrying desktops from one place to another place is not convenient. Desktop are meant for a single location usage and stationary users. On the other hand Laptops are Compact, portable and are designed to be taken from place to place conveniently. It is meant for mobile Roaming users.

• Processing Speed- Desktop are installed with more powerful processors than the laptops. So there is good for Desktop .

• Usability- In the usability, There will be good for Laptop because Laptop requires very few places and very few requires for setup. But If I even talk about Desktop requires more places and more time for setup along with this we can't very easily change places in the Desktop.

• Mouse and Keyboard- In the Laptop have already touchpad but But in desktop you have to use external Mouse. Desktop keyboards come with full size keyboard with separate numeric key pad. But we talk about Laptop Keyboard, It come with smaller keyboards and mostly without a separate numeric key pad. 

• Upgrading- Desktop components are easier to remove and make upgrades simpler. Bigger Desktop cases make upgrading easy. But Laptop components are either built-in or not removable. Many laptop users prefer to buy a new laptop, rather than upgrading the hard drive and memory, which is costly.

• Gaming- Desktops have a capability to use higher wattage power supplies, and more number of graphics cards to enable for better gaming experience. High-end Laptops can provide better graphics and gaming experience. However heat reduction is limited due to less space. The Gaming Laptop is too much costly comparing on gaming desktop.

            So How much did you like this post. Do comment and tell me your Review of this post.

What is difference between Peer-to-Peer Network and Client Server Network?

 Peer-to-Peer Networks

            Peer-to-Peer (P2P) networks involve two or more computers pooling individual resources such as disk drivers. Each computers acts as both the client and the client server. These computers can directly communicate with the other computers. Ex.- A scanner on one computer can be used by any other computer on the network.

Client-Server Networks

            This involves multiple client networks which are connected to at least a central server on network where, applications are installed. Clients need access to these server resources, they can access them only from the server. This network are too much secure comparison on P2P.

Difference between Peer-to-Peer Networks and Client-Server Networks

Content	Peer-to-Peer Networks	Client-Server Networks
Organization size	Limited number of Workstations	Large number of Workstations
User Type	Local User created on PCs	Centralized users created on server by an administrator
Security	Low, Individual users are responsible for security	High, Network and Server administrator is responsible for security
Network Traffic	Limited number of Users	Support Large number of Users
Scalability	Limited growth of users and shared resources	Higher growth can be projected in terms of users and shared resources
Cost	Cheap	Expensive
User Type	Home, small business	Colleges, hospitals or large corporations
Example	Peer	Client

 

Number of Systems

 Number of Systems

            There are four types of number of system.

1. Binary number system or Machine  Language or Low
2. Decimal number system
3. Octal number system
4. Hexa-decimal number system

1. Binary number system- There are only two digit (0,1). There are base two in binary number system. It is used in Micro Computer.

2. Decimal number system- There are ten digit from (0-9). There are base in 10. It is used in main frame Computer.

3. Octal number system- There are eight digit from (0-7). There are base in 8. It is used in mini Computer.

4. Hexa Decimal number system- This combination is (0-15). There are base is 16. 

     Value is 0-9 and A-F alphabet. It is used in super Computer.

How many types of Network?

 Types of Network

1. LAN- LAN stands for Local Area Network. It is used to network computers for a limited area like office, school by using the network media. This connection length is up to 1 km.

2. CAN- CAN stands for Campus Area Network. CAN is an interconnections of local area network within a limited geographical area. Campus network can be additional to the set of wireless connections, connect several buildings to the same network, but it's not the same thing. A CAN is smaller than a WAN network. Ex- Corporate Office campus, University etc . This connection length is up to  3 km.

3. MAN- MAN stands for Metropolitan Area Network. which optimized for a larger geographical area than a LAN, CAN, ranging from several blocks of building to entire city. This network connection length is up to 100 km.

4. WAN- WAN means Wide Area Network that is network connection of wide area such as the world. Ex. Internet This connection length is above 100 km.

5. PAN- PAN is Personal Area Network which is referred to the interconnection of information technology devices. These interconnected devices might include laptop computers, mobile phones, printers or other computer devices. It is also known as Wireless Personal Area Network (WPAN). This connection length is up to 10 m.

What is Networking and What is Benefits of Network?

 Networking

               A network is a group of two or more computer systems, which are linked computer together. It has single purpose to share the information as far as possible. A networked environment sharing of resources such as files, printers, programs storage disks etc. 

Benefits of Network

• Send or receive data between computers by sharing of files.
• Resources sharing like scanners, printers
• Internet sharing
• Increasing storage capacity: ex- Network Attached Storage (NAS) This will make your storage available on the network. Many people nowadays also use this option at homes to share files, videos, and pictures between computers.
• Desktop remote access on the network
• You can easily take backup on the server of your system
• Along with this Your system will be work quickly

Units of storage in Computer 1KB=?, 1MB=?, 1TB=?

 Unit of Storage

            We often use Bit, Byte, KB, MB, GB, and TB when we talks about Memory in our conversation but  do you know their Storage unit and full form. Below I am trying to tell you about storage unit by diagram.

Memory Storage Unit
Bit	1 Bit
Nibble	4 Bit
Byte	8 Bit
Kilobyte (KB)	1024 Byte
Megabyte (MB)	1024 Kilobyte
Gigabyte (GB)	1024 Megabyte
Terabyte (TB)	1024 Gigabyte
Petabyte (PB)	1024 Terabyte
Exabyte (EB)	1024 Petabyte
Zettabyte (ZB)	1024 Exabyte
Yottabyte (YB)	1024 Zettabyte

 

How to solve error of Peripheral device is not connection?

 Fix error of Peripheral device is not Connecting

                    If you are getting issue related to mouse, keyboard, printer, pendrive, scanner and others then How to solve error of this types of Issue?

Troubleshoot

• Check connection
• Check in another port
• Go to BIOS check USB/ LAN/ Audio/ Parallel Port should be enable
• Open OS and check related driver from device manager. Uninstall and reinstall driver, update driver
• Try that device with another PC
• May be port problem

How to fix Audio not working issue?

 Fix Issue of Audio not working

• Check audio driver is installed or not
• Update audio driver / Reinstall driver
• Check with external speaker or headphone
• Check from BIOS, may be disabled
• Connect USB Soundcard, and check external speaker
• If sound is coming from external speaker means, internal sound card is faulty

How to solve Overheating Issue?

 Solve Overheating Problem

Causes of Overheating

• Hard Disk over space
• RAM over space
• Battery shotting
• Adaptor over uses

Solution of Overheating

• Keep some space in Hard Disk
• Don't use adaptor for long time
• Go to BIOS and check CPU temperature. It should be max. 45 degree celsius. we can solve this issue, check cpu fan speed and If need then increase fan speed.
• Open system case and clean heat sinking
• Apply thermal paste between CPU and heat sink
• Clean internal parts of PC- RAM, Motherboard, SMPS, Graphic card and Fan.
• Room temperature should be normal.
• PC shouldn't be in sunlight.