Sending large files using email can pose a problem. To send a file using email, the file will first have to be uploaded to the mail server. To do so, simply add the file as an attachment. This is the most convenient way to send a file to a friend, family member, or a co-worker, assuming that the file is a small one.
Any file with a file size of more than 500kb may be difficult to send as an attachment. You may still be able to send the file, but there are some inherent problems.
Firstly, since it takes a fair amount of time to upload the file, the uploading will horde your email client. You can't do anything else while the file is uploading. For large files, the process can take several minutes. In addition, the connection may be severed. If that happens, you may have to upload the file all over again. This problem is commonly encountered, especially in a congested network.
Secondly, whoever is at the other end will not enjoying having to download such a huge file. Usually, emails are downloaded in an orderly manner - emails that arrived first will be downloaded first. But if there is a large file in the queue, that email will have to be downloaded (which could take a long time) before all the other emails can be viewed. What happens if there is a very important email in the queue? Whoever is receiving the large email will probably not appreciate the huge download.
Lesson here? Always find an alternative way to transfer huge files. You can send the files via Instant Messengers, or you can use a web based application to do so. You may also upload the files to a web server, and allow the other party to download the files at any time - without jamming up the email queue and hording the email client.
Free file transfer - send file online quickly and easily.
Article Source: http://EzineArticles.com/?expert=Darren_W_Chow
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Label: Computer, Networking
Computer Networking For a Small Business Or at Home
Diposkan oleh satriyo al-jef pada Selasa, Januari 13, 2009If you have two or more computers in your home or business, it might be a good idea to network the computers together. This will allow both computers to be online at the same time. It will allow file sharing and printing capabilities, as well as other resources. What is networking, you may ask and how does it work? Computer networking is simply a network of computers that have one gateway and are liked by either wires or wireless procedures in order to have both computers up and running at the same time.
Computer networking can be done in at least two ways. There is connection by LAN cable and then there is a wireless connection. A LAN connection will allow you to physically connect two or more computers together to create a network. This network will allow you to have all computers sharing information and internet connection without having each one manually connected to a certain network. The only type of problem with this connection is that there are a lot of wires that will connect each computer to the network and it you are not careful, you can accidently unplug your network, if the wires are not out of the way.
A wireless network will include a wireless router and will also have a software program that will link the computers into a network. There are no wires going to a router with this one, as there would be with the previous one. No wires to trip over and you will still have the same capabilities as you would with a LAN network. So all your computers, whether or not they are home or business can be connected and allowed to share information and all computers online at the same time.
Article Source: http://EzineArticles.com/?expert=Sanjana_Antony
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Label: Computer, Networking
5 Powerful And Free Methods That I Use To Speed Up My PC
Diposkan oleh satriyo al-jef pada Selasa, Januari 13, 2009Many of my friends say that I am obsessed with techniques on how I can speed up my PC.
Whether I’m doing some work with Adobe Photoshop, Adobe Illustrator, and Adobe InDesign all running at the same time, or whether I’m playing Gears of War while World of Warcraft in windowed mode is minimized, I always want my PC to perform as fast as possible. Yes, I am a speed junkie. I easily get frustrated with the slightest hint of a load time.
Hence, I am always on the lookout for ways to speed up my PC.
Here are 5 such methods that I use to speed up my PC and to ensure that it will always run at optimum performance with very minimal hiccups.
Speed Up My PC, Technique No. 1: Download The Latest Drivers
The physical components of your PC stay the same, unless you remove and replace them. But the software they run? They constantly change. The programs sold today will fall pale in comparison with the programs that will be made available next week. The websites we visit will evolve based on the internet technology that will be introduced.
And how are our systems supposed to cope up?
When I want to speed up my PC, the first thing I do is to download the latest drivers for the physical components of my rig. Graphic card, motherboard, modem… you name it, I download it! I make sure that nothing but the latest driver is installed in my system.
Speed Up My PC, Technique No. 2: Keep Your Registry Squeaky Clean
Does it take forever to boot up your system? Chances are, your registry is bogged down by useless leftover files from the programs you have installed, even if you have already uninstalled them.
Whenever I want to speed up my PC, I open my favorite registry cleaner to scan my system for some redundant, and sometimes harmful, leftover files. Then I let it do its thing, deleting the non-essential files whenever it could.
Reg cleaners really help speed up my PC, and there is no reason why they can’t help you speed up yours.
Speed Up My PC, Technique No. 3: Your System May Have Been Infected By Spyware And/Or Adware
Sometimes, slow boot up time and slow processing speed are caused by the infestation of spyware and/or adware in your system. Spyware and adware are forms of malware that surreptitiously find their way into your PC, often through the websites you visit or the email attachments you open.
If I am infected by spyware and/or adware and I want to speed up my PC, I simply open my most trusted spyware remover – Search & Destroy – a free utility that is powerful enough to wipe out all the known spyware and adware variations today.
Speed Up My PC, Technique No. 4: Scan For Viruses And Kill Them
Slow PCs may also be caused by viruses, the most popular of which are Trojans – wicked programs that keep hammering our systems their evil deeds.
There is only one way to determine the existence of a virus in your system, that is, by running a complete diagnostic scan using an anti-virus software. The best anti-virus software I can recommend is AVG, a free, open source program that is regularly updated with the latest virus descriptions which allows the program to run a really comprehensive examination of your system.
Thereafter, the anti-virus program will eliminate the threat and I’d be able to speed up my PC with no hassle at all.
Speed Up My PC, Technique No. 5: Defragment Regularly
One of the really under-appreciated features of a Windows-based PC is the Disk Defragmenter. Basically, the Disk Defragmenter will eliminate useless and redundant files in your entire system, not just your registry.
I swear to God, defragmenting your disk is THE best way to speed up my PC. Defragmenting may take a couple of hours or more, but the end result is very much worth it.
To access the Disk Defragmenter, go to START, then ALL PROGRAMS, then ACCESSORIES, then SYSTEM TOOLS, and voila! You’d be able to speed up your PC as efficiently as I can speed up my PC!
by: Mehmet Onatli
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Label: tips komputer
CCNA, CCENT, Network+, And Security+ Practice Questions: TCP, UDP, Smurf Attacks, And More!
Diposkan oleh satriyo al-jef pada Selasa, Januari 13, 2009Let’s test your knowledge of UDP, TCP, smurf attacks, EIGRP, and more with these questions designed to help you prepare for success on your CCENT, CCNA, CCNP, Network+, and Security+ certification exams!
CCENT Certification / Network+ Certification:
Which of the following protocols runs on both UDP and TCP?
A. DHCP
B. SNMP
C. DNS
D. ARP
E. Inverse ARP
Answer: C. DNS runs on port 53, both on TCP and UDP.
Security+ Certification:
Briefly define the term "smurf attack". (Not too briefly, though!)
Answer: Basically, a smurf attack involves sends ICMP Echo packets (pings) with the intended victim's IP address specified as the source of the Echo packets. This transmission takes the form of a directed broadcast, which means that quite a few hosts can receive it - and then respond with ICMP Echo Replies, which will all be sent to the intended victim.
CCNA Exam:
R1 and R3 are directly connected at their respective Serial1 interfaces via a DTE/DCE cable. What command will tell you whether the interface is connected to the DTE or DCE end of the cable?
Answer: Run show controller serial 1 on either router - the DTE / DCE information is near the top of the output.
CCNP Certification / BSCI Exam:
DUAL has discovered four possible paths to a remote network, with the following metrics: PathA, 1500. PathB, 1500. PathC, 2600. PathD, 3100. What command will allow EIGRP to use the first three paths without using the fourth?
Answer: variance 2 would do the job. Any path with a metric of 3000 or lower will be utilized; setting it to 3 would bring PathD into the equation.
CCNP Certification / BCMSN Exam:
What is the main purpose of IEEE 802.3ac?
Answer: The IEEE 802.3ac standard allows the maximum frame length to be extended to 1522 bytes, which means the dot1q 4-byte header doesn't cause problems in transmission.
CCNP Certification / ONT Exam:
Which queueing strategy gives priority to interactive, low-bandwidth communications by default?
Answer: Weighted Fair Queueing (WFQ) gives priority to interactive, low-bandwidth conversations, and then splits the remaining bandwidth fairly among the remaining conversations.
Look for a new set of Cisco and CompTIA certification exam questions soon!
by: Chris Bryant, CCIE #12933
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Label: Networking, tips komputer
Blogs are now an extremely popular and important part of the internet. Millions of people blog every day. As blogs have evolved over the years, so has the commenting system. Now anyone can make comments on a particular blog posting. As blog commenting has grown more popular, so has spam commenting. In this newsletter, we’ll go over why comments are a great form of feedback for your blog, how they help the credibility of your content, what spam comments are and how to prevent them from happening.
Comments – A great form of feedback
When blogs first came around, they were simply online journals. No one could post comments on a blog posting. That all changed in 1998 with OpenDiary, a site which allowed people to comment on blog postings. Now every blog, whether it is remotely or self-hosted, includes this option to comment.
Commenting is great because it allows real people to tell you what they think about your form. It gives you feedback on what you are doing right and what you may need to improve. Comments can be encouraging to you and motivate you to post more quality blog messages. Or they can be constructive criticism to make you work harder to get better at writing content.
Whatever the style of comment is, it is still very useful to your blog. High numbers of comments have the ability to make a blog look credible because they show that the blog is being read by a lot of people. That’s something that every blog owner wants, and comments help to let them know just how many people enjoy their content.
Bad comments
Unfortunately, spammers have now started to use comments as a way to spam. How do you know what a spam comment is? Well, a spam comment is a comment that only advertises another site or product. If the comment seems bland/generic with a cheap link thrown in, then it’s definitely a spam comment.
Here is an example of a typical spam comment:
“Hey, this site is really cool. Check out my really cool site at spamsite.com.”
Of course not all spam comments will be this blatant, but you get the point.
Fortunately for bloggers, as spam comments have grown, so has the ways to prevent it. Here are a couple ways that you can prevent spam comments from even being posted on your blog.
#1: Close off commenting on older blog posts
There are options for you to stop comments from being posted on any particular blog post. Lots of times, spammers will post comments in weeks or months old posts. So take away this opportunity from them to keep it from happening. Most blog hosters now offer this as a standard option in the tool panel. If one of your posts has been up for a couple weeks, close it up.
#2: Take advantage of software offered to prevent comment spam
If you host your own blog using WordPress, you can use an option in that software to prevent spam. Even if you aren’t using WordPress, you can still use other Spam comment blocking software like Spam Karma, Akismet, and Bad Behavior. While these aren’t 100% effective, they have proven to be quite effective in preventing spam from happening.
#3: Take a look at your settings and see what can be tweaked to toughen your protection
Lots of blogs now have settings to help prevent spam. If you already have a spam blocker on in your blog and are still experiencing spam, take a closer look at the settings to see if there’s anything that can be tweaked to make your protection stronger. However, if you do this, you should closely monitor your posts to make sure legit comments aren’t being blocked out. If they are, you might have to lighten up a bit.
#4: Regularly read your blog comments
Be sure to keep an eye on your comments. Even the best software or setting can’t prevent everything, so you will have to occasionally manually remove comments on your own.
By applying the above principles, you can ensure that your blog is full of only good, quality comments, which will help your credibility tremendously.
Comments are a great form of communication between yourself and your readers. They help the credibility of your blog!
author len hutton
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Label: komputer, tips komputer