What is the DHCP Server ? Include installation tutorial

What is the DHCP Server ? Include installation tutorial

by | Mar 6, 2023 | Learning-en, Windows Server

What is DHCP (Dynamic Host Configuration Protocol):

DHCP is a network management protocol on Windows servers to automate the process of assigning IP addresses and other network configuration settings to devices on a network.

The DHCP server on a Windows server allows clients on the network to automatically obtain an IP address, subnet mask, default gateway, and DNS server information.

This helps simplify network administration and eliminates network administrators to manually configure each device on the network.

Some of the key roles and functions of DHCP on a Windows server include:
  • IP address management: It automatically assigns IP addresses to devices on a network, ensuring that each device has a unique address to communicate with other devices.
  • Configuration management: It can also distribute other network configuration settings such as subnet mask and default gateway and DNS server information to clients.
  • Centralized management: It allows administrators to manage IP address assignments and other network configurations from a centralized location, making it easier to administer large networks.
  • Dynamic address allocation: It allows for dynamic allocation of IP addresses that means addresses are only assigne to devices when they are needed and are released when they are no longer in use however ensuring efficient use of available addresses.
DHCP plays a critical role in:
  • simplifying network administration
  • improving network efficiency
  • reducing errors by manual IP address assignment.
Command PowerShell to install it:

Install-WindowsFeature DHCP –IncludeManagementTools

 

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What is the Windows Server? Include Installation tutorial

What is the Windows Server? Include Installation tutorial

by | Feb 22, 2023 | Learning-en, Windows Server

Windows Server :

Windows Server is a server operating system developed by Microsoft and designed to provide a platform for running network services such as file and print sharing, web and application servers, database management, and other enterprise-level applications.

There are several different versions, including Server 2019, Server 2016, Server 2012 R2, and Server 2008 R2. Each version provides unique features and capabilities, and the choice of which version to use depends on the needs of the organization.

Some of the key features of Windows Server include Active Directory, which provides a centralized management system for user accounts, security groups, and other network resources; Hyper-V, which allows virtual machines to create and manage on a single physical server; and Remote Desktop Services, which allows users to access applications and desktops remotely.

Also includes several tools and utilities for managing and monitoring server performance and security, as well as backup and recovery capabilities to help ensure business continuity in the event of a system failure.

Installing Windows Server:

It involves several steps, including preparing the server hardware, creating installation media, and running the installation process. Here is a general overview of the installation process:

1. Check the hardware requirements:

Make sure that the server hardware meets the minimum requirements for the version of Windows Server you plan to install. You should also ensure that all necessary drivers and firmware are available and up to date.

2. Create installation media:

You can buy and download an ISO image of the Windows Server installation files from Microsoft’s website and then create a bootable USB drive or DVD from that ISO. You can use a tool such as the Windows USB/DVD Download Tool or Rufus to create the bootable media.

3. Boot the server from the installation media:

Insert the bootable USB drive or DVD into the server and restart it. Press the key to enter the server’s BIOS or UEFI firmware settings and make sure that the server is set to boot from the installation media.

4. Run the Windows Server setup:

Once the server boots from the installation media, you can prompt to choose the language, time zone, and other basic settings. You will then need to select the installation type, partition the hard drive, and choose the destination drive to install Windows Server.

5. Configure the server:

After the installation is complete, you can prompt to create a user account and password, and you can configure additional settings such as network settings and domain membership.

Install additional software and updates:

Once Windows Server is installed, you can install additional software and updates as you need, and configure any services or roles required by your organization.

It’s important to note that the exact installation process may vary depending on the specific version of Windows Server, the server hardware, and any custom requirements for your organization. Therefore, it’s always a promising idea to consult the official documentation or seek the assistance of a qualified IT professional.

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Functions in Python

Functions in Python

by | Feb 10, 2023 | Python

Functions in Python

A function in Python is a block of code that performs a specific task and returns a result. Functions help break down a program into smaller, more manageable pieces and make the code easier to read, test, and maintain. Functions define using the def keyword, followed by the name of the function, a set of parentheses, and a colon. The code within the function indent under the definition and execute when the function can call.

def func_name (optional_arguments)

statement

…

return optional_value

 

  • Arguments: Functions accept arguments, which values pass to the function when it calls and it specify in the parentheses of the function definition, however it use within the function to perform the desire task.
  • Return statement: Functions can return a result to the caller using the return statement for any data type, including numbers, strings, lists, dictionaries, etc. If a function doesn’t return a value, it returns None by default.
  • Scope: Variables can define inside a function are local to that function, it is not accessible outside of it. Variables define outside of a function can call global variables and can access from anywhere in the program.
  • Recursion: Functions can call themselves; this technique is recursion. Recursive functions are useful for solving problems that can break down into smaller, similar subproblems.
  • Default arguments: These arguments are used in the function definition but if a value doesn’t provide for a default argument, the default value will be used.
  • Keyword arguments: Functions can call using keyword arguments, which specify as key=value pairs but Keyword arguments allow you to specify arguments in any order if the names of the arguments can be provided.

Functions are a fundamental building block of Python programming and are essential for writing clean, reusable, and maintainable code.

Example:
def exp(i) :
return i*100
>>> exp(5)                       result = 500
In this case, when we recall exp with any number, the result is number*100

def exp(i) :

if i %2 ==0:

return ‘Pair’

return ‘Odd’

>>> exp(5)                       result = Odd

>>> exp(10)                     result = Pair

 

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What is Azure?

What is Azure?

by | Jan 31, 2023 | Azure

What is Azure?

Microsoft Azure is a cloud computing platform and infrastructure created by Microsoft for building, deploying, and managing applications and services through a global network of Microsoft-managed data centers. It provides a variety of services such as computing power, storage, and networking, as well as many pre-built tools and frameworks for different programming languages and platforms, making it easy for developers to build and deploy applications on the cloud.

 

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Functions in Python

Data Structure in Python

by | Jan 18, 2023 | Python

Data Structure in Python

Data structure in python makes it possible to store and organize data in a very efficient way. Using it, we can link the data together and perform the desired operations on them.
In programming, this process is especially important because it enables us to access and recall data more easily.

There is four general Data Structures in Python:

  • List: ordered, changeable, duplicate members.
  • Dictionary: ordered, changeable, No duplicate members.
  • Set: unordered, unchangeable, unindexed, No duplicate members.
  • Tuples: ordered, unchangeable, duplicate members.

LIST: 

>>>a = []

for example:

>>>a = [2, 5, 10]             >>>b = [1.2, 5.9, “Hi”, 8]

To recall form List: >>>a [0]      result:  2              >>>a [1]      result:  5

To change in List : >>>a [0]=3           >>>a          result  a[3, 5, 10]

Methods :
  • append(): Add element end of list
  • remove(): Remove first element
  • clear(): Remove all list
  • copy(): Copy of list
  • count(): Number of elements with value
  • extend(): Add to end of list
  • index(): Index of first element with value
  • insert(): Add element to the list
  • pop(): Remove element from list
  • reverse(): Reverse list
  • sort(): Sort list

for i in a:

print(i)

Result: 3   5   10

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DICTIONARY: 

Different between Dictionary with other Data Structure is, we can make Data with TAG, now you ask what is mean? let’s to see some examples:

>>>a = {}             >>>a = {“Quantiy”: 5, “Price”: 20}

>>>b = {}             >>>b = {0: 5, 1:20}

In the second example, we use Tag 0 for “Quantity” and Tag 1 for “Price”, that’s same as first one.

>>>c = {}          >>>c = {“name”: “XXX”, “family”: “YYY”}

for z,x in c.items():

print(z, ” : “, x)

Result

name : XXX
family : YYY

Methods:
  • clear(): Removes all
  • copy(): get copy
  • fromkeys(): get the specified keys and value
  • get(): get value of the specified key
  • items(): get a list for each key value pair
  • keys(): get a list with keys
  • pop(): Removes by specified key
  • popitem(): Removes the last element
  • setdefault(): get the value of the specified key
  • update(): Updates with the specified key-value pairs
  • values(): get a list of all the values

in this structure, we can make for each element, one Tag, so that’s too easy to save and recall data of this method.

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SET: 

SET structure is same as DICTIONARY but in SET we dont have TAG. let’s to see some examples:

>>> a = {}         a = {1, 2, 3}

in this structure if we have same number, it will remove by compiler, that’s mean, we dont have repeat in this structure.

>>> a = {1, 4, 2, 5, 1, 6, 2} ==> compiler remove 1, 2 because we have same.

for i in a:

print(i)

>>1, 2, 3, 5, 6

Methods :
  • add(): Adds element
  • clear(): Removes all
  • copy(): get a copy
  • difference(): get difference between two or more sets
  • difference_update(): Removes the items included in another
  • discard(): Remove the item
  • intersection(): get the intersection of two more sets
  • intersection_update(): Removes the items that do not present in other
  • isdisjoint(): get a intersection or not
  • issubset(): get contains or not
  • issuperset(); get contains another set or not
  • pop(): Removes element
  • remove(): Removes the specified element
  • symmetric_difference(): Get symmetric differences of two sets
  • symmetric_difference_update(): inserts the symmetric differences
  • union(): get containing the union of sets
  • update(): Update

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TUPLE: 

TUPLE is unchangeable, and when we assign value, we cannot change it after.

in TUPLE, we have access to the element by command for example a = [0], in this command it return value of first element of these data

>>>a = ()                 >>>a = (1, 2, 3, 4)     or           >>> a = 1, 2, 3, 4

as you see TUPLE is same as int, if we want to make TUPLE with one element, we must use comma after it, let’s see

>>> a = (1,)     or     >>>a = 1,

Methods :
  • count(): Get the number of times with specified value
  • index(): Get the position of where it was found

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