How to enable wireless in BOSS GNU/Linux?

 Some time wireless/wi-fi is not working in BOSS GNU/Linux[or any debian based linux like ubuntu etc].  The reason

1.  The exact firmware/driver for the wireless card, what you are using is not installed.  Because your driver may not be the popular one which is used by many laptop vendor/company/product/model.

2.  Due to the license under which the firmware/driver is released.

Note: If the license of the driver allow to distribute then by default the driver is added with the Linux Operating system.  Some drivers are free but not allowed to distribute, in this case the user manually should install that driver by his own. 

In both cases you should find and install the correct firmware.  In general the following firmwares are enough for get wi-fi access. (There are some special case, where your wi-fi card not from the vendors like b43, broadcom, intel.  If it is so, you need to get the .deb file from the vendor's site or from other distro's repository.)


Install the following firmwares from the repository using terminal(with root permission),
Applications -> Accessories -> Terminal

$sudo apt-get install firmware-b43-installer firmware-brcm80211firmware-iwlwifi firmware-linux-free

Now you can check whether these firmwares installed, by the command
$dpkg -l | grep firmware
the o/p of this command will be like the following

ii  firmware-b43-installer       4.150.10.5-4        Installer package for firmware for the b43 driver
ii  firmware-brcm80211         0.32~bpo60+1    Binary firmware for Broadcom 802.11 wireless cards
ii  firmware-iwlwifi                0.32~bpo60+1    Binary firmware for Intel Wireless 3945, 4965 and 5000-series cards
ii  firmware-linux-free            2.6.32-39            Binary firmware for various drivers in the Linux kernel

How to findout make of the wireless card:

1. After the system bootup, from termianl read the message in "/var/log/syslog" by

$sudo tail /var/log/syslog

2. $lspci

3. $lshw

4. $lsusb (if you are using wireless dongle for your PC.)

after the installation of these things in your machine(some times we need to restart) wireless thing comes into the effect.  now just click on the network icon (nm-applet) and now you can see the options like

wireless network

enable wireless

create new wireless network

connect to hidden wireless network and the menu itself shows you all the available wireless networks.

For intel wifi cards:
install firmware-iwlwifi

For broadcom lp-phy type wifi cards:
install firmware-b43-lpphy-installer

A simple anology of English & Helmet

A simple analogy of English Vs Helmet.

Do you wear your helmet while eating in restaurant..? Do you wear helmet when you are traveling in a bus..? Do you wear a helmet when you are jogging in a beach..?  Do you wear a helmet while posing to a photo..? Do you wear a helmet while cycling..?  Do you wear a helmet while you bathing..?

Ans: No we don't.

Do you speak in English with your friend even you both know Thamizh well..? Do you speak in English while eating/ordering food in restaurant in Tamilnadu..? Do you speak in english while you traveling in a bus...?  Do you speak in english in a thamizh program which is going to be telecast in thamizh channel..?...

Ans: A Shameless YES we do.

So, When we need do wear helmet...? when it is really needed.  i.e, While driving bike.  But we don't ;-)

So, When we need do speak in English...? when it is really needed.  i.e, the opposite person(s) don't know Thamizh, and English is the only medium to communicate.  But we are....?

Very simply... "Use it when actually needed"

See the japanese, chinese people....

Remember am not opposing to (learn/speak) english... use it accordingly.  And don't forget thamizh (yes it's (y)our mother tongue.)

People here are not able to distinguish between english & knowledge, beauty & white in color.

"English is a language not knowledge.. White is a color not beauty.."

P.S:  Just i did write what i thought, what is my view/stance(since long time)...  If it hurts(anybody), just bear it :).  Because, its true(fact fact fact factuuuuuu Thanks to actor santhanam.).

How to change the username of your twitter account..?

1. Login into your twitter account
2. goto -> settings(on top near to search, in the drop down last but first option, just before sign out) -> account(on leftside menu first option)
3. You can see your full account details like username, time zone, mailid etc.. In username textbox type your new desired username and wait for twitter's response regarding the availability of that username.  Try with some modification in the username until you get username available message.  Once you got go to the bottom of the page and save changes. 
Thats all now your username is changed to new one as you entered.


Note: 
1. Details are based on the look of twitter in desktop/laptop web browser not from mobile browser.
2. Once your username is changed you should use that new username while signin into your twitter account.

How to view tamil(or any regional language) websites, blogspots in android phones without installing fonts?

1. Install opera mini from google play
2. Launch the opera mini browser in your mobile
3. In the address bar type "opera:config" [without quotes]
4. Scroll to the end of the page & search for "use bitmap font for complex scripts" and enable(yes) it.

Thats all... :) now open any tamil web page that will be looks properly.

Note:
1. Remember with this method you can only view the web pages in tamil(or any other language) and you can't write.  But one is not needed to install any fonts.
2. With this method, actually the browser shows the full web page as a bitmap image.  So, regardless of language all the webpages will be rendered properly.

UGC NET June 2012 Computer science and applications Questions - Paper II

Dear Friends the following are the questions asked in paper I of 2012 UGC NET Computer science and appliations.  

Paper – II [Right answers are in green color]

1. What is the protocol used by a diskless machine to get its ip address
   1. ARP
   2. RARP
2. Two Database users try to access same record
   1. recordlock
      
3. Key process areas of CMMI4 is also defined in
   1. CMMI3 2. CMMI5 3. CMMI2 4.
4. All leaves at same level in this tree
   1. AVL tree 2. B-tree 3. B+-Tree 4.
5. Color needed to draw all vertices of a planer grpah is
   1. 4 2.  5 3.   6 4.
6. station is 2000 meter apart from hub what will be used?
   1. 100Base Tx
   2. 100Base Fx
   3. 100Base T1
   4. 100Base F1
7. Data encryption/decryption occur in which layer?
   1. Data link layer
8. host and router uses TCP/IP software which layer's software not needed to include in router
   1. physical layer
   2. data layer
   3. network layer
   4. application layer
9. Page fault % for frame size m=4 43214513421
10. Which circuit switching delayed due to store in ram and send.
    1. Packet
    2. frequency
    3. time division
11. which metric is not depend on progrming lanugage?
    1. Loc
    2. function count
    3. members of token
12. Assume that, if quantum of time is increased in the round robin algorithm then,
    1. increase in turnaround time
    2. decrease in turnaround time
    3. turnaround time varies irrelevent
13. The technology used in bluetooth is
    1. Frequency multiplex
    2. Time multiplex
    3. Frequency duplex
    4. Time duplex
14. Mobile ip's main responsibility is
    1. ip binding and registration
15. functional methods
    1. minimize cohesion and maximize coupling
    2. maximize cohesion and minimize coupling
    3. maximize cohesion and maximize coupling
    4. minimize cohesion and minimize coupling
16. Maximum bits needed to store a 3 digit decimal number
    1. 8
    2. 16
    3. 10
    4. 12
17. what is the maximum value of signed integer can be stored in 2 byte
    1. 2^15-1
    2. 2¹⁶-1
    3. 2¹⁵
    4. 2¹⁶
18. output of printf(“%c”,100)
    1. prints ASCII value of 100
19. which one of the following will only delete content but not structure.
    1. ERASE
    2. DELETE
    3. PAX
    4. ZAP

Click here for Paper I Questions

All ugc-net subject syllabus.  

Computerscience & applications syllabus download