Documentatie EOC-EMC V1 for Candidates

7/24/2019 Documentatie EOC-EMC V1 for Candidates

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Atos level 1 dive in

Status:

Version:

Last Edited:


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PROPRIETARY NOTICE

This work product shall not be duplicated, used or disclosed in whole or in part for any purpose

other than for the evaluation of the transaction contemplated by the parties. This document shall notbe provided to a third party without the prior written approval of the issuer

Issued by:

Company Atos

Date 2015/09/07


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Document History

Version Review Status / Changes Date / Name / Organization

1.0 First Draft 07.09.2015 / EOC / Atos


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Table of Content

1 Basic know how in IT ....................................................................................................... 5

2 Windows basics ............................................................................................................... 6

3 LinuxThe operating system that doesnt require a mouse....................................... 8

4 Basic Network Knowledge easier than expected ......................................................... 9

4 SAP- just like the Romanian word only different ......................................................... 11

5

Database ......................................................................................................................... 12

6 Some other information you should know before your IT journey............................. 13


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1 Basic know how in IT

Scope and objectives of this document

After you have read this documentation the scope is to obtain the general knowledgerequired in order to start a career in IT.

This documentation will be split in two sections, the first one is common things youshould know in IT, as for the second part we will dive in a more specialized part of Atos andto more specific the last part will prepare you to start your career in the first level team EMC-

EOC. The EMC-EOC team is the perfect start for people who wish to start their career in IT,because it works with all technologies (Windows, Linux, SAP, Network, Oracle, MySQL, Lyncetc.) and from here you can easily grow into a second level of your choice.So good luck, be hungry for knowledge and always thrive to improve yourself.


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2 Windows basics

The most important piece of software on any computer is the operating system. The oper-ating system gives the framework upon which all other services and applications run. Themajority of home users use a Windows based machine.

Here are the things that everybody should know about windows:

What is a processin Windows?

A process is an instance of a computer program that is being executed. A process may bemade of multiple threads.

What is a threadin Windows?

A thread is the basic unit to which the operating system allocates processor time. A threadcan execute any part of the process code including parts currently being executed by anotherthread

What is a taskin Windows?

In computer programming, a task is a basic unit of programming that an operating systemcontrols. Depending on how the operating system defines a task in its design, this unit ofprogramming may be an entire program or each successive invocation of a program.

What is a Log Filein Windows?

A log file is a file that records events that occur in an operating system or messages betweendifferent users of communication software. Virtually all software applications and systemsproduce log files.

What is Event Viewerin Windows?

Event Viewer is a component of the OS that lets administrators and users to view the eventlogs on a local or remote machine.Event Viewer can be helpful when troubleshooting prob-lems and errors with Windows and other programs.

What is a Disk Drivein Windows?

A disk drive is a randomly addressable and rewritable storage device. A disk drive is a devicethat reads and writes data to a disk (HDD, Floppy Drives, CD, DVD, etc.)However, in popularusage, it has come to relate mainly to hard disk drives (HDDs).


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What is CMDin Windows?

CMD is commonly used to mean "command": CMD.EXE (Command Prompt), the command-line interpreter on Windows operating systems. Abbreviation for command, cmd is a Mi-

crosoft Windows command that opens the Windows command line window. One of thequickest ways to launch the Command Prompt is to use the Run window (press Win+Ronyour keyboard to open it). Then, type cmdor cmd.exe and press Enter or click/tap OK.

Win button

What are Servicesin Windows?

A service is an application that runs in the background and don't have a user interface. Ser-vices are intended to provide core operating system features such as web serving, eventlogging, file serving, printing or error reporting. To open Services, click Start, click ControlPanel, double-click Administrative Tools, and then double-click Services.

What is Regeditin Windows?

Registry Editor is a tool intended for advanced users. Using Regedit.exe. The MicrosoftRegistry Editor (regedit.exe) enables you to view, search for, and change settings in yoursystem registry, which contains information about how your computer runs. To open Regeditclick Start, in the Start Menu, either in the Run Box or Search box, type regeditand pressEnter.

What is RDPin Windows?

Remote Desktop Protocol provides the user with a graphical interface to connect to anothercomputer over a network connection. However in order to work while the other computermust run RDP server software. To open RDP click Start, in the Start Menu, in the Run Box,type remote desktop connexionand press Enter.


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3 LinuxThe operating system that doesnt re-

quire a mouse

What is Linux / Unix?

Linux is an operating system; it is the software on a computer that enables application andthe computer operator to access the devices on the computer to perform desired function. Itis a stable, multi-user, multi-tasking system for servers, desktops and laptops.

Name three Unix Operating Systemsyou know?

Red Hat, Ubuntu, Fedora

Simple Linux/Unix basic commands

- ls(list the files), mv(move or rename the file), cp(copy the file), rm(remove a file), chmod( change the permissions), mkdir (make a new directory), cd ( change the directory), pwd(show the current directory),who(tells who is logged in)

What is Kernel?

The Kernel is the central module of an operating system; it is the part of the operating system

that loads first and remains in main memory. The kernel connects the system hardware tothe application software.

What is a root user?

Rootis the user that has access to all commands and fileson a Linux or Unix-like OS.

What is a file system?

A file system is the entire hierachy of directories that is used to organize files on a computersystem. The directories start with the root directory which contains a series of subdirectories,

each of which in turn contains further subdirectories, etc. Each type of filesystem has its ownset of rules for controlling the allocation of disk space to files and for associating data abouteach file with that file, such as its filename, the directory in which it is located, its permissionsand its creation date.

Where is messages.log file stored?

- /var/log/messages.log

What is a process in Linux / Unix?

A process is an executing instance of a program.


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4 Basic Network Knowledge easier than expected

What is a Network?

A network is a group of two or more computer systems linked together. There are manytypes of computer networks, including the following: local-area networks (LANs); wide-areanetworks(WANs)

What is a LAN?

Local Area Network(LAN) - A network infrastructure that provides access to users and end

devices in a small geographical area such as a school or a small office.

What is a WAN?

Wide Area Network(WAN) - A network infrastructure that provides access to other networksover a wide geographical area.

What is a TCP/IP?

TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communicationlanguage or protocol of the Internet. It can also be used as a communications protocol in a

private network (either an intranet or an extranet).

What is a Intranet?

An intranet is a computer network that uses Internet Protocol technology to share infor-mation, operational systems, or computing services within an organization. This term is usedin contrast to extranet, a network between organizations, and instead refers to a networkwithin an organization.

What is a Extranet?An extranet is a website that allows controlled access to partners, vendors and suppliers or

an authorized set of customers - normally to a subset of the information accessible from anorganization's intranet.

What is a MAC Address?

A media access control address (MAC address) is a unique identifier assigned to networkinterfaces for communications on the physical network segment. MAC addresses are usedas a network address for most IEEE 802 network technologies, including Ethernet and WiFi.

8. What is a switch?

A network switch (also called switching hub, bridging hub) is a computer networking device

that connects devices together on a computer network, by using packet switching to receive,process and forward data to the destination device. Unlike less advanced network hubs, a


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network switch forwards data only to one or multiple devices that need to receive it, ratherthan broadcasting the same data out of each of its ports.

What is a router?

A router is a computer networking device, it is essentially a specialized computer. It requiresa CPU and memory to temporarily and permanently store data to execute operating systeminstructions, such as system initialization, routing functions, and switching functions. Routerstake information that arrives through your broadband signal, decipher it, and deliver it to yourcomputer. The router will also choose the best route for the data packet so that you receivethe information quickly.

What is a firewall?

A firewall is a network security system, either hardware- or software-based, that controls in-coming and outgoing network traffic based on a set of rules.

Basic Network commands

Ipconfig= a Microsoft Windows program to display information about the the computer'sInternet Protocol settings, including IP address, DHCP lease information, network cardEthernet address, and DNS information.

ping= is a command used to verify whether or not a network data packet is capable of beingdistributed to an address without errors. The ping utility is commonly used to check fornetwork errors.

traceroute= is a utility that records the route (the specific gateway computers at each hop)through the Internet between your computer and a specified destination computer. It also

calculates and displays the amount of time each hop tooknetstat = is a command-line tool that displays network connections for the TransmissionControl Protocol (both incoming and outgoing), routing tables, and a number of networkinterface (network interface controller or software-defined network interface) and networkprotocol statistics.


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4 SAP- just like the Romanian word only different

What is SAP?

SAP is a software company known for making enterprise resource planning (ERP) software.ERP software allows organizations to manage business operations, and usually refers tosuite of modular applications that collect and integrate data from different aspects of thebusiness.

Is SAP system an operating system?

No!

What isSAPGUI?

SAP Graphical User Interface is a GUI client which is part of the presentation layer. Thereare 3 layers: presentation, application and database. The SAPGUI Family consists of:SAPGUI for HTML, for Windows and for Java.

What is an SAP instance?

An SAP instance defines a group of resources such as memory, work processes and so on,usually in support of a single application server or database server within a client/server envi-ronment. Application servers share the same memory areas and are controlled by the samedispatcher process.

What is an RFC connection?

Remote Function Call (RFC) is the standard SAP interface for communication between SAPsystems. The RFC calls a function to be executed in a remote system.

What is SAPSID?

Each R/3 installation (SAP system) of a database server and several app servers running theapplication logic is uniquely identified by a single SID (SAP System Identification), SAPSIDa three-character code such as C11, PRD, E56, etc.)


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6 Some other information you should know be-

fore your IT journey

What is Sharepoint?

SharePoint is Microsofts enterprise information portal. It can be configured to run Intranet,Extranet and Internet sites. SharePoint also provides tools for setting up employee socialnetworking platforms and company wikis.

What is Citrix?

Citrix is an American corporation that produces software designed to facilitate secure accessto applications and content. Citrix offers products for Windows, Macintosh and Linux plat-forms.

What is a Microsoft Exchange Server?

Microsoft Exchange Server is a commercial product, developed & marketed by Microsoft,that is an enterprise-level mail server. It is part of the Windows Server System line of serverproducts and is widely used by enterprises using Microsoft infrastructure solutions. Ex-change's major features consist of electronic mail, shared calendars and tasks, and supportfor mobile and web-based access to information, as well as supporting very large amounts ofdata storage.

What is a Web Application?

An application in which all or some parts of the software are downloaded from the Web eachtime it is run. It may refer to browser-based apps that run within the user's Web browser, orto "rich client" desktop apps that do not use a browser or to mobile apps that access the Webfor additional information.

What is Cloud?

Cloud storage means "the storage of data online in the cloud," wherein a company's data isstored in and accessible from multiple distributed and connected resources that comprise acloud.

What is Backup and Restore?

The combination of manual and machine procedures that can restore lost data in the event ofhardware or software failure.

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Documentatie EOC-EMC V1 for Candidates