Wednesday, November 10, 2010

LEADING THE LAB SESSION

Lab 10 was led by me and Ayushi Goyal. It was a really good experience,though i was very nervous in the beginning.
Our lab included the following topics:
1.Creating local host on machine using xampp
2.P2P networking
  • connecting two laptops via P2P and then sharing files(both in windows and linux)
  • connecting two or more than two laptops at a time
  • messaging over LAN
3. Creating websites using Joomla and Wordpress tools on a local machine
4. Wireshark
5. Folder gaurd
Initially we thought that we wont be able to cover all the topics in 2 hrs duration since creating websites was very time consuming. Our lab started by installing the required softwares in each pc which consumed our lot of time. But with proper time management we managed to cover all the topics within time.
Through this session my knowledge on these topics definitely got enhanced and i finally know how to create a website which i always wanted to learn. Since it was my first experience so was a little nervous but at the end enjoyed a lot :)

Anulima Choudhary
2010018

Leading the Lab Session..

We know that we are later than late but as some wise person has said"its never too late to learn", here we are , finally, sharing our Lab Session leading experience.. As usual we both kept on delaying our lab session leading but one fine day we decided to take on this heavy task and the main motivation behind it was Aditi's Group Project presentation due in the same week. So, it was the best time for us as we had our hands on atleast some part of the topics we had to cover.
It was in the first presentation week and we were damn nervous about it as we had undergone training by our peers only and had no guidance from our TAs.
The topics we had to cover were:Enabling and disabling Firewall in Windows and Ubuntu.Setting up a Wireless router and its basic utilities.Types of internet securities.WEP hacking.Well, as our group members would be already aware our lab session was almost a mess, mainly because whatever we had to teach was quite simple and already known to most of them or their projects were already on these topics. Some of our intelligent (they think so) peers tried creating nuissance in lab by changing SSID and password of the router we had setup.But our overall experience was good. Since it was our very first experience ....so....we enjoyed a lot...:)
Aditi Lal 2010005
Aishwarya Jain 2010007

SMART PHONES

SMART PHONES
Smart phones are nothing but a multi utility mobile phones. Apart from making calls you can also get additional features as it runs on a complete operating system like functionality. they are actually pda's(personal digital assisstance) with various functionalities like colour screens, audio capability, web browser, portable media player.It also allows to install additional mobile applications.

some of the smart phones that came initially were:
1 PSION ORGANISER 2 (1984)
  • was 8 bit processer
  • 9V battery, lasted for several months
  • develop own applications(opl language)
memory extensions, plug in module
2 IBM SIMON( in 1994)
  • touchscreen
  • PIM, data communication
  • first real smartphone
nokia N-95 came in 2007
it had various features like -:
  • QVGA display
  • 5mpixel camera
  • integrated gps
  • usb, radio, tv out, etc

3 SYMBIAN OS
  • mobile phone manufacturers such as 'sony ericsson. panasonic, seimens,nokia,samsung etc' are shareholders of it.
  • mainly touchscreen interface(+ combinations)
  • it is hte biggest selling operating system at present.







Tuesday, November 9, 2010

Virus threats in computer

The virus attacks on computer have been there since long time and most of us have faced it at some point of time. Starting with the basic definition a virus in computers can be a program or programming code that replicates by being copied to computer boot sector or document. Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or be present on an external drive or CD. The immediate source is downloaded file you've received is usually unaware that it contains a virus.

The common symptoms of a computer infected by virus are mainly seen by reduced performance; unknown operations working in the back ground, task manager do not work properly, cases of computer as well as operating system crashes increase significantly. The symptoms depend upon the sources code of the attacking virus. The performance is greatly reduced. Many operations which are unknown to the user run in the computer, windows task manager is disabled .Disk space gets reduced suddenly. Many other unwanted messages are displayed.

Though there are hundreds of antivirus software available but most of them are either paid antivirus or only their trial versions are available. Of all the antivirus we have tried, we found that Norton internet security 2010 in paid version and AVG and Panda antivirus are best free versions on the basis of their capability to clean up the system and the load it puts on computer.

Types of antivirus includes cloud antivirus which is able to send programs or documents to a network cloud where it uses multiple antivirus Or we can put in Network Firewalls which prevent unknown programs and Internet processes from accessing the system protected. However, they are not antivirus systems as such and thus make no attempt to identify or remove anything. Other options include Online Scanning and editing registry.

However, antivirus decreases system’s performance and operational speed.

In subsequent years major threat will be from network viruses. It is now only in the earliest state of developments. This type of virus make their first faint attempts to spread their code by themselves via Microsoft Mail and using FTP, but the best is yet to come.

Virus threats in computers

The virus attacks on computer have been there since long time and most of us have faced it at some point of time. Starting with the basic definition a virus in computers can be a program or programming code that replicates by being copied to computer boot sector or document. Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or be present on an external drive or CD. The immediate source is downloaded file you've received is usually unaware that it contains a virus.

The common symptoms of a computer infected by virus are mainly seen by reduced performance; unknown operations working in the back ground, task manager do not work properly, cases of computer as well as operating system crashes increase significantly. The symptoms depend upon the sources code of the attacking virus. The performance is greatly reduced. Many operations which are unknown to the user run in the computer, windows task manager is disabled .Disk space gets reduced suddenly. Many other unwanted messages are displayed.


 

Though there are hundreds of antivirus software available but most of them are either paid antivirus or only their trial versions are available. Of all the antivirus we have tried, we found that Norton internet security 2010 in paid version and AVG and Panda antivirus are best free versions on the basis of their capability to clean up the system and the load it puts on computer.


 

Types of antivirus includes cloud antivirus which is able to send programs or documents to a network cloud where it uses multiple antivirus Or we can put in Network Firewalls which prevent unknown programs and Internet processes from accessing the system protected. However, they are not antivirus systems as such and thus make no attempt to identify or remove anything. Other options include Online Scanning and editing registry.


 

However, antivirus decreases system's performance and operational speed.


 

In subsequent years major threat will be from network viruses. It is now only in the earliest state of developments. This type of virus make their first faint attempts to spread their code by themselves via Microsoft Mail and using FTP, but the best is yet to come.

Leading the lab session... my experience..

well, we finally got an oppurtinity to lead a lab session. and now, with full conviction i can say that teaching is not (Capitalised) easy.

I could go rambling on about the problems we faced but if you really are reading this i assume you're not expecting a complaint letter... lol..

My part in the lab was pretty elaborate and since the students were more interested in ''just watching the demo" i gave the demo and tried to make it as clear as it could be. This was made easier by the fact that i was covering windows utilities like Disk Cleanup and Disk Defragmenter which everyone was familiar with. Also i had to cover Prezi which is pretty easy to use and really amazing in fact. So all i would wanna say is that though my part was not so complicated but due to Diwali and the subsequent quagmire it caused in our coordination it did prove somewhat a task to gather enough knowledge that is needed to lead a lab session resulting in our last minute preparations.

The thing is that we DID lead the lab session thanks to Dr. Amarjeet sir for providing this opportunity.

Mithil Gupta
2010049

Data Compression and a few Software involved....

    Though the project seemed easy, but we were in a dilemma as to what we should cover in our project as we thought everyone is already aware of data compression and can use archives without the need of our demos.
    But, we suddenly had this idea of comparing different softwares and look at new features that these softwares provide. These included:
  • Brief description of the tools used- WinRAR , BitZipper , 7-zip
  • Backup
  • Batch tool
  • Making SFX files
  • Securing archives with passwords
I and my partners Jyotika and Shruti then took up 3 different software after going through features of many archives. After choosing 3 such software, we used to literally argue that whose archive was the best. And while debating we actually did a lot of comparisons, came up with new features that we had never heard of.
(Jyotika n Shruti ended up teasing me because we concluded that BitZipper had lost the race);-)

Practical stuff was interesting. The main challenge was to sit for hours after college and compile our search to make one SINGLE presentation!
But, we eventually succeeded in finishing the presentation in time.
Though our coordination during presentation wasn’t up to the mark (due to lack of time, we couldn’t rehearse it that well with the projector), but still I feel that our presentation was good. All of us had worked equally on it, were well aware of everything present in the slides and answered all the questions that we were asked in class.

I’d like to thank Jyotika Dora and Shruti Kapur who are equally responsible for the success of this project. I’m proud to have such hard working partners who obeyed all my instructions, are intelligent and didn't mind when I screamed at them.:)
Thank You Sir for providing us with an opportunity to learn to work as a team and gain knowledge at the same time!