A computer printer is a device used for printing text or images on hard copy stored in electronic form, generally on physical print media like paper. Printers are designed to support both local and network connected users simultaneously.
Nowadays, modern printers can directly interface to electronic devices like digital cameras. Some printers that come with non printing features are commonly known as Multi-Functional Printers (MFP) or Multi-Function Devices (MFD). It integrates various functions of multiple devices into one. Such types of printers are extremely useful for small businesses and home offices.
As opposed to a traditional printer, a multi-functional printer is a combination of devices like Printer, Scanner, Photocopier, and Fax Machine. Likewise, there are numerous other types of printers widely available in the market. Let’s take a look at them:
Laser Printer: A laser printer works in a similar fashion as a photocopier does. It has a roller which is charged with electricity. A laser beam is passed to remove the charge from portions of the roller. The parts hit by the laser are powdered by the toner which is then transferred from the roller to the paper. Finally, the ink is baked into the paper with the help of a heater incorporated in the printer. People generally prefer laser printer because of its ability to give high quality output and high speed.
Dot Matrix: It has a print head that moves across the page. A dot matrix printer produces characters using a cluster of pins which press an inked ribbon to the paper, thereby creating a dot. Each character is made in the same way. Dot Matrix printers are relatively cheaper and durable. These qualities still attract businesses which use them as invoice printers.
Ink Jet and Bubble Jet: It works in a manner similar to a Dot Matrix Printer. However, its print head sprays liquid ink onto the page instead of pressing a dry ink against the page. Ink jet and bubble jet printers are better known as predecessors of laser printers. They produce better image quality and run faster.
>From inkjets to monochrome and color lasers, different printers are designed to accomplish different tasks. Companies like DELL, CANON, LEXMARK, BROTHER, EPSON, and HP HEWLETT PACKARD are most preferred when it comes to buying a printer. Nowadays, computer printer support is widely available on the Internet which saves you from taking it to any expensive technician for troubleshooting.
Acquaint Yourself With Computer Printers
Cisco CCNA,CCNP,CCENT,and CompTIA Network+ And Security+ Questions: VLANs,SYN Attacks,And More!
Let’s test your knowledge of important topics such as SYN attacks and VLANs for your Cisco CCNA, CCNP, and CCENT exams, as well as the CompTIA Security+ and Network+ certification exams!
CCNA / CCENT / CompTIA Network+ Certification:
Host A and Host B are in the same VLAN. Host C and Host D are in a different VLAN. Host A sends a broadcast. How many other hosts will receive it?
A. Zero
B. One
C. Two
D. Three
Answer: B. The other host in the same VLAN, Host B, will receive it. Broadcasts are not forwarded to other VLANs.
Security+ Certification:
Briefly describe a "SYN attack".
Answer: The intruder will generate a series of SYN requests, and the soon-to-be-victimized network device sends a SYN-ACK in response. The device then waits for an ACK, but that never comes. These unfinished connections result in the network device not being able to accept SYN request from legitimate network hosts, since its buffers will be overwhelmed with the false (and unfinished) requests.
CCNP Certification / BSCI Exam:
If an IPv6 address begins with "FF", what type of address is it?
A. broadcast
B. unicast
C. multicast
D. MACcast
Answer: C. That's a multicast. There's no such thing as a MACcast. But there should be. ;)
CCNP Certification / BCMSN Exam:
Short answer: What interface-level command takes a port operating at L3 and places it into L2 operating mode?
Answer: switchport. To change the port back to a routed port, use no switchport.
CCNP Certification / ISCW Exam:
Short answer: You're going to write a policy map that will be applied to a Serial interface running at T1 speed. By default, how much bandwidth can you assign in that policy?
Answer: The speed of a T1 line is 1544 kbps, but by default only 75% of that bandwidth can be distributed in a policy map - that's 1158 kbps (1544 * .75).
10 Creative Uses for Ecards
Ecards were once only sent for fun and as special greeting cards, but now online users are finding many creative ways to maximize the benefits of ecards. Ecards are practical, easy to send, and even free or very low priced. So what exactly are ecards? Ecard is another word for "electronic card" and describes any digital postcard or greeting card that is sent by e-mail.
While many e-card services are free, some providers offer custom e-cards for a small fee. Both free e-cards and paid e-cards are created online using sophisticated, interactive graphic software. Let's explore 10 creative ways to use e-cards.
1. E-card Memos for Companies
Companies once delivered memos in print or by fax, but today many are turning to the use of e-mail, especially those with an intranet system in place. Employees each have their own company e-mail. E-cards can be used to send out creative memos to employees. These creative ecard memos can boost morale, remind employees of an event, instruct employees on a daily task, or even give praise for a job well done. The good news is employers can customize the ecards and send them to all employees at once or to only a select few.
2. Birthday E-cards
Birthday e-cards are great for sharing a surprise "Happy Birthday" message to your friend or loved one. You can create a custom e-card for their birthday based on their personality and you can even set the date for the e-card to be sent on their birthday in advance so you won't forget! Birthday e-card messages can be personal, humorous, lovely, or romantic. They can even play music.
3. E-cards for Weddings and Anniversaries
For weddings and anniversaries, there are a number of e-cards to fit your style. These can be sent on the wedding day to the bride or groom as a relaxing gesture. They can be customized with unique themes to reflect the type of relationship enjoyed by the couple. Anniversary ecards can be customized with the date of the wedding and number of years married.
4. E-cards for Holidays
Holiday e-cards can be customized with themes for Christmas, Easter, Valentine's Day, Thanksgiving Day, Halloween, and so forth. You can find musical ecards that play Christmas songs or romantic Valentine's Day themes. For Halloween, send a spooky one! For Thanksgiving Day, send a "thankful" ecard with fall colors, pilgrims, turkeys, or harvest themes.
5. Mother's or Father's Day E-cards
For Mother's and Father's Day, customize e-cards with your own photos. You can also create e-cards with your own special designs. If you sign on for paid e-card services, your recipient will be able to print the card as a keepsake. If you have kids, get them involved in creating these special keepsake ecards.
6. E-cards for Kids
With adult supervision, kids can create e-cards of their own with puzzles, special effects, images, and photos. They can send these to their grandparents or other relatives, or even to their friends. Puzzle ecards are usually included in paid packages, but there are also many special effects and images to choose from with free e-card services.
7. Invitational E-cards
E-cards can also be used in place of mailed invitation cards. You can send printable e-cards to invite friends and loved ones to birthday parties, holiday parties, weddings, company parties, summer grill-outs, and other special functions. They're much cheaper than mailing out invitations, and you can always mail a few to those who don't use e-mail.
8. Friendship E-cards
Send an e-card just to say a quick "hello" to your friends. You can send notes of encouragement, funny ecards, and a variety of themed e-cards to let them know you're thinking of them. Some of the themes to choose from include animals, congratulations, friendship, missing you, love, flowers, cute animations, destinations, landscapes, and many others.
9. Note of Thanks by E-card
E-cards can also be used to send a note of thanks to friends or loved ones. Perhaps you received a gift and want to return thanks. You can also create e-cards as a "thank you" note to clients if you own an Internet business or a business with e-mail contacts.
10. New Baby E-cards
E-cards also come with great themes for new babies. Send a boy or girl themed e-card or unique themes such as animals with their younglings or storks carrying a baby. You can write a message of congratulations to the new mother and customize the card with love.
With e-cards, you can send messages quickly through e-mail for almost any occasion. Best of all, you'll save time and money. You won't have to spend countless hours writing out cards and envelopes. You won't have to pay for postage, and you'll avoid numerous trips to the post office! Free e-cards and paid services are definitely worthwhile for greeting cards, messages, memos, and more!
Windows Server Virtualization Allows More Efficient Use of Server Hardware
Windows Server Virtualization is a means for running virtual 64-bit versions of Windows Virtual Server. By running a virtualized version of a server, WSV 2008 and similar programs make it simple to run multiple versions of an operating system on a single machine. Essentially, an administrator running a virtual server creates multiple sections on the machine and runs a copy of the operating system of their choice within in each piece.
Each section, or partition, is an emulated copy of the entire machine, duplicating the effect of devices attached to the computer. As far as the virtualized server can tell, it is the only operating system running on the machine. This is extraordinarily useful to network administrators who want multiple, dedicated-like servers for their customers, but not at the cost of an entirely new machine. It’s also far more economical for the consumer, as well, since multiple people are sharing the cost of upkeep for a single machine. Virtual machines can also be used for trying changes to a website before going live; WSV 2008 and similar programs allow for testing a new version in a safe environment to ensure it is running correctly before actually putting the site online.
There are a several options when choosing a virtual server program, but Windows Server Virtualization is one that stands out. Unlike many other virtual servers, WSV 2008 allows the virtualization of both 32 and 64-bit systems, allowing it to run and simulate a broader range of software. Windows Server Virtualization also allows the migration of a virtualized server over to a dedicated machine; when surges in traffic occur, network administrators can quickly move the affected site to a machine with more capability.
There are other features as well. WSV 2008 offers support not only for Windows Server, but for a variety of other operating systems and platforms, allowing customization according to a customers needs. Some customers prefer a Linux based server, and with Windows Server Virtualization it is easy to provide it. All that needs to be added is a new partition, and the customer’s preferences can be fulfilled with the hardware you already have. There is no need to purchase new machines, and all of the hardware is more flexible.
Two more features make Windows Server Virtualization a good choice. The new 2008 version offers the ability for running snapshots, allowing network administrators the power to copy the server exactly as it is while it is still running. Downtime is minimized, since backing up the server no longer requires that the server be taken offline, and it is simple to bring it back up if there is a problem. WSV 2008 is also incredibly scalable. It now offers support for multiple processors and cores, among other things, allowing a single powerful machine to host a large number of virtual servers.
Whatever your specific needs Windows Server Virtualization is an excellent choice. It allows increased scalability, supports multiple operating systems, allows running snapshots, and enhances the value of your hardware. WSV 2008 allows virtualization of an entire server, enabling you to run multiple copies on a single machine. You save money and get more value from your hardware. The new 64-bit support only enhances this, offering the possibility of ever more powerful machines, and even more virtualization.
