Presentation covers all the topics which a recruiter should be well versed while working on technical requirements.

1. Welcome
to

2. Operating System (OS)
• Set of software that manages the hardware and
provides services to computer programs.
• Cycle Hardware<OS<Application<User.
• Real-time OS are for executing real-time applications
• It is predictable response to Events. Has two aspects:
a) Event Driven b) Time Sharing
• Distributed OS: Many appear as 1 computer
• Embedded OS: For embedded computer System.

3. Different Operating Systems
• Unix: All Console
• Linux: GUI of Linux
• Mac: As known
• Windows: As known
• Android: Mobile OS, Linux wrapped in Java
• AIX: Customized Unix by IBM
• HP-UX: Customized Unix by HP
• Solaris: Customized Unix by Sun Microsystems

4. Architecture (Kernel OS)

6. OSI Model For Networking

7. OSI vs Internet

8. Middleware
• Computer Software that provides services to
software applications beyond Operating System.
• It makes it easier for developer to perform
communication (I/O) so that they focus on
purpose of application.
• Communication & Mgmt of data ‘Dash in client-
server’
• Software layer that lies between OS &
Application.

9. Development Skills
• Languages: Assembly, C, C++, Java, .Net
• Difference between C & C++.
• OOPS
• Module Prog. & S/W architecture.
• Algorithm & its Optimization.
• Scripting: Perl, Shell, Tcl, Python.

10. Software Testing
• Black-Box Testing: Internal System design not considered but based on
Requirement and functionality. (Not so strong).
• White-Box Testing: Internal Logic, mainly codes (Strong).
• Unit Testing: Components & modules.
• Integration Testing: Bottom Up approach.
• Functional Testing: Output as per Req.
• System Testing: Entire system is tested as per requirement.
• End to End Testing: Similar to System, but involves real world testing
(database,network,hardware).
• Sanity Testing: Testing of Software versions.
• Regression Testing: Testing whole application if any change in module or
functionality.
• Acceptance Testing: System meeting customer requirements.
• Load Testing: Testing system under load.
• Stress Testing: System is stressed beyond its application.(data,query,connections).
• Performance Testing: How system performing under different loads.
• Usability Testing: Is customer understanding the system.

11. • Install/Uninstall testing: Recovery from
crash and hardware failure.
• Security Testing: Penetrating via hacking.
• Compatibility Testing: Working on all
platforms.
• Manual Testing: Strong/Values.
• Automation Testing: Test
cases,Scripting,Automation.

12. Security Concepts
• IPSec: Internet Security Protocol is a
protocol suite for securing IP by:
a) Authentication
b) Encrypting each IPv4 & v6 packet
• Works on Internet Layer or Upper Layer.
• SSL: Secure Socket Layer
• TLS: Transport Layer Security
• SSH: Secure Shell

13. IPSec Uses Following Protocols
• Authentication Header
• Encapsulating Security Payloads (ESP).
• Security Associations.
• Common Terms:
• Algorithm, Intergrity, Authentication, Keys,
Encapsulation,Encryption,Protocols.

14. Thanks
Any Questions?