Domain Name System- Linux

DNS is an composition of Domain Name System and it’s widely used in distinct channel. As the name suggests, DNS is a naming system that gives a name to any computer or service connected to a network. DNS is absolutely important and everyone should use it. Without it, we’d have to visit websites through their IP addresses, rather than their domain. So, for example, if you wanted to visit our website through it’s IP address, you’d have to go to 209.135.140.30. But with DNS, you can go to rosehosting.com . It’s accessible to retain and it’s more user-friendly. That’s why people examine DNS “the phone book of the Internet”. Nobody wants to remember an IP, but everyone can and does remember a domain name.

Now we Discuss the DNS briefly with the Linux Training in Chandigarh :

How does DNS work?

There’s lots of stuff going on “behind the scenes” when you visit a website. There’s a communicating relationship between a few servers and your computer. These are the usual steps they take:
1. The user enters the website’s domain in the address bar
The DNS explanation system begin when a user types in a domain name/address in the URL bar of his web browser. With that, the user essentially requests the IP address of the domain and waits for a response.
2. The browser and OS check their local cache
After a user desire instructions on a domain, the user’s OS and browser investigate their local cache for any information on that domain. If the domain is already in the cache, the browser returns a positive response, if not, the Resolver needs to be contacted.
3. The Resolver checks the local cache
 
In maximum cases, the resolver is absolutely your ISP. First, the resolver analysis to see if there’s any local data available. If not, he contacts the domain’s root server.

 What is a root server you ask?

Well, a root server is a name server that covers the root zone of the Internet’s Domain Name System (DNS). It answers desire for report in the root DNS zone among other requests. For example if a request is received and asks what are the authoritative name servers for rosehosting.com it will return the authoritative name servers for the respective top-level domain (TLD). The root name servers are the primary indication in resolving civilized clear host names into IP addresses thus making them a critical part of the Internet infrastructure. There are thirteen root name servers specified in the world. But don’t let this information scare you. It does not mean that there are only thirteen existing physical servers. They each have redundant equipment in place that provides reliable service even if failure of hardware or software occurs. Additionally, the root name servers operate in multiple geographical locations that use a routing technique called anycast addressing. Wikipedia’s explanation for any cases addressing is: a network addressing and routing process in which datagrams from a single sender are routed to the topologically nearest node in a group of potential receivers, though it may be sent to several nodes, all identified by the same destination address.

CBitss Technologies is the best place for Linux Training in Chandigarh.If you want to learn more about DNS so please join this course .

Disk Management - Linux Training in Chandigarh

What is Disk Management?

Disk Management is an expansion of the Microsoft Management 
Console that allows complete authority of the disk-based hardware
 recognized by Windows. Disk Management is used to manage the
 drives installed in a computer for example hard disk drives 
(internal and external), optical disk drives, and flash drives. It can be 
used to separate drives, format drives, assign drive letters, and many 
more.Disk Management is sometimes spelling incorrectly as Disc 
Management .Disk Management  is an part of Linux training in 
Chandigarh. Also, even though they might sound relevant , Disk 
Management is not similar as Device Manager.

How to Open Disk Management

The most common way to access Disk Management is via the 
Computer Management services.Disk Management can also 
begin by shoot diskmgmt.msc via the Command Prompt or additional 
command line interface in Windows operating system. Let's have a 
look on the opening Disk Management From the Command Prompt .

How to Use Disk Management

Disk Management has two main sections - a top and a bottom:

• The top section of Disk Management contains a list of all the 

divisions, formatted or not, that Windows recognizes.

• The bottom section of Disk Management contains a graphical 
  image of the physical drives installed in the computer.

Performing positive actions on the drives separation make them available
 or unavailable to Windows and construct them to be used by Windows
 in positive ways.

Here are some common things that you can do in Disk Management:

• Division a Drive
• Format a Drive
• Change a Drive's Letter
• Shorten a Partition
• Delete a Partition
• Change a Drive's File System

Two types of Disk :- Basic Disk and Dynamic Disk

Basic Disks

Basic disks are the storage types generally used with Windows. The 

 basic disk refers to a disk that maintains parts, like primary parts and 

logical drives, and these in are normally scheduled with a file 

system to become a amount for file storage. Basic disks provide a 

simple depot solution that can contain a useful array of changing 

storage requirement scheme.

The following operations can be performed only on basic disks:

• Create and delete essential and extended partitions.

• Create and delete logical drives within an lengthy partition.

• Format a division and mark it as active.

  

   

 

 

 

 

Dynamic Disks

Dynamic disks provide quality that basic disks do not have  such  

ability to create volumes that span multiple disks and the ability to

 create fault permissive  volumes. Dynamic disks action more 

reliable  volume management because they use a database

 to record data about dynamic volumes from the disk Dynamic

 disks are a different  form of volume management that allows 

volumes to have non adjoining duration on one or more physical 

disks. Dynamic disks and volumes depend on the

 Logical Disk Manager and Virtual Disk Service and their associated 

quality. These features enable you to perform tasks such as modify 

basic disks into dynamic disks, and creating fault permissive volumes.

Types of Volumes for Dynamic Disks

When you are working with a volume on a Dynamic Disk, you can 
choose to extend or span that volume across different drives, in 
server editions you can even use RAID 5. There’s also not a real 
check on the number of volumes we have, although it would not 
 make  sense to have a large number of them. Here we have
 types of  Dynamic Disk learn more about that 
with Linux Training in Chandigarh.

The types of volumes to create Dynamic Disk:

• Simple Volume – this is a regular “division”. If the disk type is 

normal, this creates an actual partition.

• Striped Volume – data is striped across different hard drives 

so that every other segment of data is alternate between the drives

 for outside performance.There is no repetition.

• Spanned Volume – Data stuff up on one drive and then 

stuffing up the next drive as it gets more full. Two or more drives are

 normally taped together to make a larger disk.

• Mirrored Volume – for home users, this is the only form of 

repetition that you will get with software options. Read performance

 should be rapid , but write performance will possibly be slightly slower,

 since Windows has to write to both drives for everything.

• RAID5 Volume – only works on server parts, but it can stripe

 across 3 or more hard drives and include a parity stripe to prevent 

data loss if a drive was to fail.

 

These above points are based on Disk Management  which is 
used in Linux Operating System and learn more about Linux
 from Linux Training in Chandigarh.

       Logical Volume Management 

Lets us learn the linux concept “ Logical Volume Management” with Linux Training in Chandigarh :

Logical Volume Management : In Linux, Logical Volume Management (LVM) is a device mapping target that initiate logical volume management for the Linux kernel. Most modern Linux distributions are LVM. The concept that user have to aware to the point of being able to have their root file systems on a logical volume. This is called Logical volume management.

 

How to Manage and Use LVM (Logical Volume Management) in Ubuntu ?

Learning a concept to manage the logical volume management with linux training in Chandigarh. In ubuntu, user have to follow the following steps:

Today, we will discuss about the key management tools for the logical volume management in ubuntu so that you will get confident in setting up expanding the installation process.

To manage Logical Volume Management there are GUI tools available  as it’s a management that is used if the hard disk gets full. LVM helps to manage those hard disk so that you don’t need to take new hard disk for your device. There is lot of the commands in Logical Volume Management are very similar to each other. Each valid command is as follow by one of the following:
 

• Physical Volume = pv
• Volume Group = vg
• Logical Volume = lv

Learn how to Use Logical Volume Manager with Red Hat Certification in Chandigarh. ?

LVM Using the Command Line

There is a lot of set of commands that handle the LVM administration tasks. In this section, we are going to learn  a full scenario starting with a raw new empty disk, till the creation

1. Given that you have two new disks of sizes 4GB and 6GB, we need to create a new file system /sales_data with  8 GB size.
2. Provide the already physical volumes to recheck the result of the last step.

Two commands could be used

I.  pvs

II.  pv display.

Now, the newly-created physical volumes could be used to create a volume group. To create a new volume group, use the vgcreate command.

How Linux training Chandigarh with CBitss will help you to become linux administration ?

CBitss Technologies is the best and optimum institute in Chandigarh.CBitss has best mentors who are providing best teaching in dedicated manner to their students. Currently the latest technologies are not upgraded in some academy and they are working on old technologies but CBitss Technologies is constantly reviewed and updated with all the new stuff as the mentors are young and energetic who all aware of latest techniques

Here in CBitss, we have:

• Own Web Hosting servers
• 10 LIVE server machines: i5-8GB-1TB
• Dedicated Lease Line with a pool of LIVE IPs
• All training is assignments based.

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Web Server

Web Servers (Linux training in Chandigarh)

Today, we discuss the Web Server. What is a Web server? How it is work? How it can help us to receive our request and takes us to the web page?

Linux is an open source operating system which works on web servers. If you want to learn more about different web servers then you can join Linux training in Chandigarh which is provided by CBitss Technologies. Firstly we discuss Web server:

What is Web Server?

The web server is the software that receives your request to access a web page. However, a web server is not simply your host however additionally your server. Once it’s found the web page you requested, it additionally serves you the web page. It runs some security checks on your HTTP request and takes you to the web page. Depend upon the page you have got requested, the page could ask the server to run some additional modules whereas generating the document to serve you. It handles your communications with the website, handles your requests, makes sure you that other modules are ready to serve you. It then serves you the document you requested.

Apache Server:

Apache is that the most generally used web server software. Developed and support by Apache Software Foundation, Apache is an open source software which is available free of cost. It runs on 67% of all web servers in the world. It is fast, reliable, and secure. It can be extremely customized to fulfill the needs of various different environments by using extensions and modules. Most WordPress hosting service providers use Apache as their web server software. However, WordPress will run on different web server software as well.

Apache server is one of the modules of Linux training in Chandigarh. If you wish to learn more about Apache and also want to learn about other web servers that are used to access our request and send us to a web page, then it’s the best place for learning Linux Operating System.

Linux training in Chandigarh - About AWS

AWS (Amazon web services)

Amazon web services is a cloud computing platform provided by Amazon. Sometimes we can call web services as remote computing services or Cloud services. In 2006, Amazon offers first web service to provide online web services to websites.

• Cloud Drive
• Cloud Search
• Simple Storage Service
• Elastic Compute cloud
• DynamoDB (Dynamo Database)

Benefits of AWS:

• It is easy to use.
• AWS is flexible because it enables you to select the operating system, programming languages, database, web applications and other services.
• A performance of Amazon web services is high.  
• It is reliable.
• In the case of security, it uses end to end approach to secure our infrastructure.
• It is a cost effective approach. It consumes only the amount of computing, storage and other IT resources needed.
• Amazon has a global presence with different locations.
• Numerous API’s are available in various programming languages which help you to manage your infrastructure programmatically.

For complete knowledge about AWS, you can join Linux training in Chandigarh which is provided by CBitss Technologies.  

Redhat Linux training in Chandigarh