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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
How much will it cost me to switch to wireless for my four PC's?
The cost will be about $200. The wireless router will cost around $100 and each wireless adapter will cost around $25.
Transport Layer
What hardware comes with firewall support?
Many routers come with hardware support built in to protect your connection from those attempting to hack or disrupt your service. Many netgear routers come with firewall support built in, as do buffalo and D link router equipment.
Which commands will change the current configuration mode of router?
#Configure terminal for configuration mode #exit for previous mode #ctrl+z for set up mode
What is difference between wireless and wired LAN?
The wire, and the security which comes with the wire, or the security requirements that come from the absence of a wire:
A wired network is considered a private network, in the sense that the network owner can generally grant or deny physical access to this network. For example, the wired network inside my house is only accessible to those people inside my house.
However, a wireless network not only has no wire, it also implements a public or shared media. Subject to the reach of the access points and routers, my wireless LAN may be accessible from outside my house, and the owner of a wireless network has no immediate means to grant or deny controlled access to this network.
To solve this problem, wireless networks use sophisticated authentication and encryption methods to ensure that only authorized users can access a given network, and that nobody else can decipher messages sent on that network. An early form of this security protocol is WEP, short for wire-equivalent privacy (although it was later discovered that WEP wasn't very sophisticated to begin with, and is now superseded by more powerful alternatives).
The overhead for authentication and encryption does not exist on a wired network, and impairments that impact the operation on a public media (such as radio-frequency interference. While a wired network might come at the cost of wire installation, it is in principal more secure and faster than a wireless network.
With internalization, one solidifies his or her own beliefs and values in terms of morality as opposed to those of society's as a whole. This may involve self hypnosis or the analyzing a situation in a way that allows the person to feel they are correct in doing so. Internization is the opposite of externalization.
How can you send a picture from a lap top with an IR port to the IR port of a cell phone?
you have to buy IRDA Wireless Connection Adapter(USB Adapter).
1. you should Plug & install the Driver of IRDA Adapter to Computer. 2. IF you have CD of software that which cell your are using (Sony T310, Nokia 6610) You should install that also to computer. 3. Enable your IRDA port in your cell phone.4. Keep your cell phone near IRDA adapter face to face in which your cell phone contains that IRDA port. 5. Then the System will detects the cell phone in your system.6. open the software of the cell phone which is installed in your system. You should select send files in that software, transfer the jpg. image to your cell.7. in your cell phone you should press O.K. or Yes to receive the image.8. Then You'll receive the Image.
To send the image from cell phone to computer:
You should open the image & select the send option 'send over infrared'.
after sending you will receive it on recived folder in your system in which drive software installed.
you should do all these steps Keeping the IRDA Adapter & IRDA port in cell phone face to face.
bye,
ManuNETPOINTMandya- 571401, Karnataka, India.Ph: 9343230522
What is parity checking used for?
Parity checking is used as a way to ensure data integrity and prevent errors, or detect them in the event they are occuring.
Where does a collision domain exist in a switched network?
In a LAN packet-switched environment, such as with an Ethernet network, the transmission of the data packets relies on packet switches, routers, and LAN cables. In a LAN, the switch establishes a connection between two segments only long enough to send the current packet. Incoming packets are saved to a temporary memory area or buffer in memory. In an Ethernet-based LAN, an Ethernet frame contains the payload or data portion of the packet and a special header that includes the media access control (MAC) address information for the source and destination of the packet. When the packets arrive at their destination, they are put back in order by a packet assembler. A packet assembler is needed because of the different routes that the packets may take. Bottom Line is a router breaks up a number of computers into segments. So the collision domain is all the computers in that segment. The router prevents data traveling to the other segment when it is not addressed to that segment.
How do you find absolute path name of your home directory what is it on your system?
All you need is the PWD(Print Working Directory) command, this will list your current directory absolute path All you need is the PWD(Print Working Directory) command, this will list your current directory absolute path
How do you set a password on a echolife hg520b router so no one else can use my wireless network?
Use your browser to connect to the router http://192.168.1.1 and login (default username and password are admin) In the navigation pane on the left, expand tools and click System Management The admin account will be in listed in the table. Click on the pencil in the right hand column to edit the account. Supply the old password and the enter and confirm the new one, save the changes and you're done. You will probably be prompted to login with the new password to continue on the page, but this will give you a chance to test it. Good Luck.
#1 ) Ankit Fadia ( http://www.ankitfadia.in )
Ankit Fadia is an independent computer security and digital intelligence consultant with definitive experience in the field of Internet security based out of the Silicon Valley in California, USA. He has authored 14 internationally best-selling books on numerous topics related to Computer Security that have been widely appreciated by both professionals and industry leaders the world over. His books have sold a record 10 million copies across the globe, have been translated into Japanese, Korean, Portuguese and Polish and are also being used as reference textbooks in some of the most prestigious academic institutions around the world. He was one of eight people named MTV India's Youth Icon of the Year for the year 2008.
#2 ) Vivek Ramchandran (http://www.vivekramachandran.com )
Vivek Ramachandranis a world renowned security researcher and evangelist. His expertise includes computer and network security, exploit research, wireless security, computer forensics, embedded systems security, compliance and e-Governance. He is the author of the books - "Wireless Penetration Testing using Backtrack" and "The Metasploit Megaprimer", both up for worldwide release in mid 2011. Vivek is a B.Tech from and an advisor to the computer science department's Security Lab. In 2006, Microsoft declared Vivek as one of the winners of the Microsoft Security Shootout Contest held in India among an estimated 65,000 participants. The competition was aimed at finding leading Security Experts in India. Vivek was also awarded a Team Achievement Award by Cisco Systems for his contribution to the 802.1x and Port Security modules in the Catalyst 6500 series of switches. These are high end security features used in Enterprises
#3 ) Sunny Vaghela (http://www.techdefence.com/sunny )
Sunny Vaghela is one of the countries pioneer Information Security & Cyber Crime Consultant. The young and dynamic personality of Sunny has not only assisted in solving complex cyber crime cases but has also played an instrumental role in creating awareness about information security and cyber crimes. During his graduation at Nirma University he developed projects like SMS Based Control System, Voice Recognition Based Control System exhibiting his sharp acumen for technology. At the age of 18, Sunny exposed loopholes like SMS & Call Forging in Mobile Networks. The technology that allowed to send SMS or Make Call to any International Number from any number of your choice. At Present, He is Director & Chief Technical Officerat TechDefence Consulting Pvt Ltd which is rapidly growing security services & investigation consulting organization focusing on Cyber Crime Investigations,Cyber Law Consulting,Vulnerability Assessment & Penetration Testing,Information Security Training.
#4 ) Benild Joseph (http://www.benildjoseph.com )
Benild Joseph the 20 years old world renowned Ethical Hacker | Information Security Consultant | Speaker | Author in Indian IT Industry was born in Calicut, A City of Kerala. Currently Acting as the Chief Executive Officer of "Th3 art of h@ckin9" - International IT Security Project. He has his credit to many registered and pending patents in cyber forensic and information security domain. He specializes in Web Application security, Penetration testing and Forensic investigation. His research interests include Computer Security, Networking, Data Forensic, Virtualization, Web Application Vulnerability and Information Security. He has been interviewed by several print and online newspapers where he has shared his experiences relating to Ethical Hacking, Scope in Indian Information Security field, Cyber War and Cyber Crimes.
#5 ) Koushik Dutta (http://www.koushikdutta.com )
Koushik Dutta is responsible for Clockworkmod recovery and Rom Manager for Android rooting and the core member of famed UnrEVOked team. He has been a .net developer from heart and had his internship initially at Microsoft and is a former MVP. He decided to leave Microsoft and hack Android cellphoneslike there was no tomorrow. Sony approached him after geohot humped them like anything but he politely declined .
Top 10 Indian Hackers| Top 10 Hackers in India | Best Indian Hackers | Top Ten Indian Ethical Hackers | Top Hackers from India | No 1 Indian Hackers | Best 10 Indian Hackers | India's Top 10 Hackers | List of Hackers in India | List of Indian Hackers | List of Indian Ethical Hackers | Top 5 Indian Hackers | Top 5 Hackers | Top 5 Indian Ethical Hackers | Ankit Fadia | Vivek Ramachandran | Sunny Veghela | Benild Joseph | Koushik Dutta
What is the difference between copper cables and fiber-optic cables?
Both are meant to transfer signals, but they use quite different technologies.
Copper will transport electrical signals.
Fiber optic will transfer the signal as a ray of light.
Of course, both are part of special technologies; fiber optics cable needs special switches and network cards to work with it.
Both are meant to transfer signals, but they use quite different technologies.
Copper will transport electrical signals.
Fiber optic will transfer the signal as a ray of light.
Of course, both are part of special technologies; fiber optics cable needs special switches and network cards to work with it.
Both are meant to transfer signals, but they use quite different technologies.
Copper will transport electrical signals.
Fiber optic will transfer the signal as a ray of light.
Of course, both are part of special technologies; fiber optics cable needs special switches and network cards to work with it.
Both are meant to transfer signals, but they use quite different technologies.
Copper will transport electrical signals.
Fiber optic will transfer the signal as a ray of light.
Of course, both are part of special technologies; fiber optics cable needs special switches and network cards to work with it.
Why attenuation is much higher in coaxial cable than in twisted pair cable?
It is not true. Attenuation is higher in twisted pair cable. See related links:
It is, because coaxial cable is concluded system and magnetic field of signal in coaxial cable is kept inside the cable so there is little energy losses because no energy is spent on inducing currents outside of cable.
Which operating system is used for Apache web server?
Although Apache was originally developed for Unix and Linux based systems it will also run under Windows.
Does a domain controller always run on a dedicated server?
YES a DC needs a dedicated server to function
Which wireless communications media is used to transmit data for distances of up to 30 feet?
Bluetooth
Will adding a second wireless n router to a network increase the signal?
If you put your second router next to the first one, the answer is no. You can put the second router in another part of building and create so called bridge which allows to increase coverage.
What are the two most common interior gateway protocols?
The most common Network routing protcols used for interior routing is OSPF and RIP.
RIP is still common because of its compability whit older hardware and software.
Why is bandpass filter used in fdm telemetry?
since fdm sends many message simultaneously the message signals must be bandpassed to send through the channel along with the error messages to reduce the bandwidth of the channel
A comunications network.
Calculate the capacity of a telephone channel of 3000hz and signal to noise ratio of 3162?
Calculate the capacity of a telephone channel of 3000hz and signal to noise ratio of 3162?
