What is the difference between the router and the hub?
A hub (or L2 switch) performs data bridging/switching/forwarding at the OSI Layer 2 level for data destined to another address on the same subnet.
For data to be forwarded to another subnet, that data must be routed at the OSI Layer 3 level which is performed by a Router (or L3 Switch).
Routers collect various information about other networks it can forward traffic to and from, what routing protocols are used and which path(s) to forward that data to.
What is the difference between Windows 8 and 8.1?
Well it really depends on a few things such as what you mainly do on you're
computer the most, do you play a lot of PC games, and how familiar are you
with computer OS's generally? For an average consumer Windows 7 would be a
better investment due to the sheer fact that it is very user friendly and very
compatible to any type of computer user. Also Windows 7 is way more
compatible to most applications as it has been out for quite a while and
Windows 8 however is not 100% there with all applications yet. If you're main
focus on computers is strictly working, school, business etc. then Windows 8 is
for you, but it may take time getting used to the OS as it's not just a desktop
feature; another user interface is Metro which has many different types of built
in applications and adds for a whole new appearance and even though it looks
cool it can be deceiving. All in all, I only recommend Windows 8 for more
"experienced" computer users who are patient enough to get used to this new
and odd OS. If gaming is what you're looking for like I said earlier then go for
Windows 7 or even Linux Mint, because both are very compatible to any type of
user.
What is the difference between DDNS and DNS?
Difference between DNS and
DDNS:
• DNS is static which means it remains
fixed for a particular domain whereas
Dynamic DNS changes is dynamic in
nature which means it changes every
time.
• Both the systems comprise of the
TCP/IP protocol.
• Both DNS and DDNS are developed
because users cannot remember the
numeric IP addresses of different
websites.
The thickness of the different types of cabling and components will determine how fast or slow the test will be.
What is the difference between white LED and coloured LED?
Well apart from one being red and the other not, the red one gives out light on a different wave lenght to the white one, the red gives light out wich has a wave lenght closer the the Infa-Red spectrum, but not completely IR because then you wouldn't be able to see it :)
What are the differences between soft boot warm boot?
A soft boot is when you just turn a device off and back on. Which you can do by hitting the power button off then back on or use a reset button which also powers off and on a device automatically.
A hard boot is when you completely erase the software that runs in the device and re install it back on to the device.
How many brands of computers are?
The major ones in the U.S. in no particular order are:
There are many more all over the world.
What is the diffenrence between hyper multimedia to multimedia?
Passive media does not require significant user activity or commands. Interactive multimedia in comparison is based on user control and manipulation. Interactive media includes gaming applications, where passive media can include the playback of audio files.
What is the difference between a flat LCD or plasma computer monitor?
There are advantages and disadvantages to both the LCD flat screen television and the LED screen television. The best way to determine the differences and your preferences is to visit a local electronic store to compare which television will work for you.
What are the similarities and differences between ssh and telnet?
FTP and Telnet are similar in that they are defined as OSI layer 7 (application) protocols.
They are different in that they use different ports for sending and receiving messages and are used for different purposes. FTP is used to sending and receiving files across a network. Telnet is used to send commands remotely to another network device.
Differentiate between static allocation and dynamic allocation?
BS Anwer- static allocation is when something is moved to a location permanantally and dynamic allocation is when something is moved temporarily, but will move again.
What is difference between windows sp1 and sp2 security?
Im pretty sure its just the drivers, also sp1 is faster.
What is the difference between SDRAM and RDRAM?
SDRAM and DDR RAM are memory integrated circuits used in computers. The difference between the two is the speed because SDRAM is a single data rate which is slower than DDR RAM that stands for the double data rate. Which means the chip reads or writes two words of data per clock cycle.
What is the difference between virus and software?
Viruses are malicious programs that are downloaded onto your computer without your knowledge, often along side something you've downloaded off the internet or through email. Viruses spread from file to file and can spread to others when you email infected files. Viruses cause harm to your computer by slowing it down or destroying files on the computer. Software is a program that performs a specific task such as editing photos or playing movies. Unlike viruses, most software is only active when the user chooses to use it. Technically, viruses can be considered a type of software, but in general the term "software" is never used to describe a virus.
What is the difference between an iPhone 4 and an iPhone 4S?
The iPhone 4S has Siri built into it the mobile that will speak to you, whereas earlier versions do not have this feature. Ask Siri to list your appointments for the next hour and you will hear your appointments being read aloud by the handset.
What is the difference between access point and wireless bridge?
A wireless Access Point (AP) connects a group of wireless stations to an adjacent wired (Typically, Ethernet) LAN. An AP is like an Ethernet hub - except that a hub relays LAN frames only to other 802.3 stations, whereas an AP relays 802.11 frames to all other 802.11 or 802.3 stations in the same subnet. (In English: "it allows communication between wired and wireless..") A wireless router connects a group of wireless stations to an adjacent wired (Typically, Ethernet) LAN. A wireless router is a wireless AP combined with an Ethernet router. A wireless router forwards IP packets between your wireless subnet and any other subnet. Most routers also have a built-in firewall, and built-in Ethernet ports. (In English: same as an AP, but you can network different subnets or networks (Example: your home network and the Internet [Modem also required typically!] )
What is virtual representation?
Virtual representation stated that the members of Parliament, including the Lords and the Crown-in-Parliament, reserved the right to speak for the interests of all British subjects. This is rather than for the interests of only the district that elected them or for the regions in which they held peerages and spiritual sway.
What is the difference between information system and embedded system?
Information systems:- Information System include databases that include useful "information". Information Systems is the discipline concerned with the development, use, application and influence of information systems. An information system, following a definition of Langefors, is a technologically implemented medium for recording, storing, and disseminating linguistic expressions, as well as for drawing conclusions from such expressions. The technology used for implementing information systems by no means has to be computer technology. A notebook in which one lists certain items of interest is, according to that definition, an information system. Likewise, there are computer applications that do not comply with this definition of information systems. Embedded systems are an example.
Embedded Systems:-
Embedded systems include small computers that make things work, such as the computer in your radio, television or the computer that controls your vehicle engine. An embedded system is a computer systems that is part of a larger system.
Examples: * Washing machine * Car engine control * Mobile phone ES Characteristics
* Often mass products * 98% of the processors are in ES * Sometimes very specialized systems * No or minimal user interface * Resource constraints * Must usually fulfill strict timing * Usually runs forever (no reboot) For further reading refer to this- http://en.wikipedia.org/wiki/Embedded_Systems
Difference between property developer and building contractor?
The main difference between a property developer and a building contractor is the developer is the person who blueprints the area and buys the land to build on. The contractor is the person who actually builds the building or subcontracts the work out.
What is difference between weblogic and websphere?
Both are brand names of Software products made by their respective manufacturers i.e. IBM and BEA, however people generally refer to their Application Servers written in compliance with the J2EE specifications maintained by SUN. In that sense both are similar products and work on Java. However there may be differences between both in the way they are implemented and the J2EE features that they offer as well as additional value adds. Those would be too much to list here and suggest that you visit the respective sites of the Vendors.
(These are not just application servers actually but entire suite of products, but generally people mean 'Application Servers')
What is the difference between Windows NT and Windows 2000?
Basically, ME was a new coat of paint for Windows 98. It had a look similar to Windows 2000 and some added functionality over Win98, but also seemed to have a large number of reliability issues. ME was geared towards the personal computer user. Windows 2000 was developed from the Windows NT kernel, making it a far more robust platform. Since 2000 was developed more as a server operating system, it lacked some "personal" functionality, such as graphics and other function geared towards gamepley. Much of this is included in Windows XP, which is a more personal use extension of the Windows 2000 foundation.
Importance of educational technology?
Educational technology in education is important because it helps today's teachers to integrate new technologies and tools into their classroom. Teachers are able to upgrade and improve the learner-centeredness of their classroom. It enables teachers to engage their students in unique, innovative, and equitable ways.
What is the difference between email and wiki?
A blog is a sort of online journal. It is updated daily or weekly or whenever the author desires. A wiki is a platform that is meant for anyone to update in real time. A blog is owned by an individual whereas wiki is being updated by many people around the world.
For blogs, the timeline is more important. For wikis, when an article was published matters less, because articles are supposed to be updated as new information becomes available. Blog posts are usually one persons' opinion, followed optionally by comments. Wiki articles represent consensus, but can have an associated discussion/talk page.
A wiki is a superset of a blog. A wiki can host a blog, but not viceversa. Too emulate a blog in a wiki, the wiki page needs to be protected against editing by other users than the author, and a comment widget (e.g. Disqus) needs to be added to the page.
A wiki allows multiple users to create, modify and organize web page content in a collaborative manner.
A blog is a Web site that maintains ongoing posts. A blog is frequently updated,a personal Web site featuring diary-type commentary and links to articles or other Web sites.
Wiki:
- Multiple Authors,
- Edited by a group or team,
- Contains links to other Wiki pages,
- Continuousy changing and growing rapidly,
- Many-to-many communication.
Blogs:
- Usually a single author. Sometimes can have multiple contributors,
- Author posts, user comments,
- Opinion Sharing ,
- One-to-many content.
WHAT IS THE Difference between an inverter and UPS?
In UPS ,the main power comes to the UPS and is used to charge a battery inside. The output from the battery is fed into a sine wave inverter which converts DC into AC and feeds to the computer in case of a power failure. In such a scenario, the battery is stopped from charging and instantly starts to supply power to the computer.
In Inverter ,AC is converted into DC and then is used to charge the battery. When the power supply goes off, the relay triggers the switch from mains to inverter. It is the use of a sensor and a relay that is the main difference between a UPS and an inverter, otherwise the two are same. And the use of relay and sensor cause the time delay in power supply from an inverter.
How do you attach two different pipes?
It depends on what you mean by "different". If they are of two different metals such as one is copper and the other is iron, you'll need to use what is called a "dialectric union". It keeps the pipes from being electrically conductive to each other and significantly reduces the corrosion in the pipes. If one pipe is plastic you can just use a plastic fiting that will connect to threaded pipe. It's very common to connect two different pipes together, but to get more specific information you may need to go to a home improvement store and ask for some advice.