IT 422 Requirements

"Verse"

2008-01-27T19:31:00.000-08:00

"Word English Bible"

Be free from the love of money, content with such things as you have, for he has said, “I will in no way leave you, neither will I in any way forsake you.”

"King James Version"

Let your conversation be without covetousness; and be content with such things as ye have: for he hath said, I will never leave thee, nor forsake thee.

"American Standard Version"

Be ye free from the love of money; content with such things as ye have: for himself hath said, I will in no wise fail thee, neither will I in any wise forsake thee.

Fiber Optic Cable

2008-01-27T02:06:00.000-08:00

ADVANTAGES

SPEED: Fiber optic networks operate at high speeds - up into the gigabits

BANDWIDTH: large carrying capacity

DISTANCE: Signals can be transmitted further without needing to be "refreshed" or strengthened.

RESISTANCE: Greater resistance to electromagnetic noise such as radios, motors or other nearby cables.

Three types of fiber optic cable commonly used:

single mode,

multimode and

plastic optical fiber (POF).

Fiber Optic Cable: The transport fibres of glass or plastic that are enclosed by material of a lower index of refraction and that transmit light throughout their length by internal reflections. These fibres are bundled into cables and are capable of transmitting very large amounts of digital information (data) in both directions with very little loss in signal quality. From Glossary of Distance Education and Internet Terminology.

Iis a network cable that contains strands of glass fibers inside an insulated casing. These cables are designed for long distance and very high bandwidth (gigabit speed) network communications.
Fiber optic cables carry communication signals using pulses of light. While expensive, these cables are increasingly being used instead of traditional copper cables, because fiber offers more capacity and is less susceptible to electrical interference. So-called Fiber to the Home (FTTH) installations are becoming more common as a way to bring ultra high speed Internet service (100 Mbps and higher) to residences.

Single Mode fiber optic cables are designed for the transmission of a single ray or mode of light as a carrier, and are used primarily for long-distance signal transmission.
SINGLEMODE fiber cable only has one mode of propagation, a single wavelength of light in one fiber core. As a result there is no interference or overlap between different wavelengths of light over long distances. Please Call or request a Quote for any of the following:
SC to SC Fiber Cables
ST to ST Fiber Cables
SC to ST Fiber Cables
LC Fiber SINGLEMODE Patch Cables, LC Connectors
LC to SC Fiber Optic Cable
LC to ST Fiber Optic Cable
LC to LC Fiber Optic Cable
LC to FC Fiber Optic Cable

Single-mode fiber - is a type of fiber optic cable through which only one light signal can travel at a time.
Because single-mode fiber is more resistant to attenuation than multi-mode fiber, it can be used in significantly longer cable runs.
The core of a single-mode fiber is normally 9 microns wide. A micron is one millionth of a meter.
Single-mode fiber can support Gigabit Ethernet over distances as long as 10 kilomters.
The opposite of single-mode fiber is multi-mode fiber.

Multimode fiber optic cable - and components are less expensive and easier to work with than their singlemode counterparts. This is due largely to the fact that the multimode fiber core is larger, and alignment tolerances are much less critical than they are for singlemode fiber. Like singlemode, multimode fiber provides high bandwidth at high speeds, but transmission is limited to shorter distances than singlemode. (In longer cable runs, the multiple paths of light in a multimode fiber tend to create signal distortion).Standard multimode cable is made of glass fibers, usually 50-to-100 micron in diameter (most common is 62.5). Multimode cable is also available as low-cost Plastic Optical Fiber (POF), which offers performance similar to glass cable for very short runs.

New Blog

2008-01-20T00:36:00.000-08:00

Purchase small stopgap upgrades

If you have systems to which you can add some memory or drive space, this is a good opportunity for minor upgrades. They can be especially helpful if you don’t foresee capital monies for a new project, yet the business demands expanded functionality.
But be cautious here: If you accommodate unfunded requests, you may be setting a poor precedent for the business. This is a better strategy for systems used entirely by your department.Moving from a purely technical net admin role to a managerial position can be a long and winding road full of pitfalls. Steven Crane has become quite familiar with that road during his long career in the IT industry.ne of the easiest ways to boost performance for any PC is to add memory to the system. But before you go to get that memory upgrade, be sure to gather information about your computer to ensure you get the right memory for your system. You need to know what type of memory the computer uses, the memory module sizes and what already exists in the system. Adding Random Access Memory (RAM) is an easy and cost effective way to boost your computer’s performance. Although the computer may function with 512MB of RAM or even less, generally 1024MB is a reasonable minimum. Computer consultants build entire careers around advising businesses when to upgrade their hardware.

Purchase evaluation equipment or software

The Equipment, Software and any related documentation are the proprietary and confidential information of Verso and/or Verso’s licensors. Participant shall not distribute, disclose, or display the Equipment.The Equipment and Software shall be used exclusively by Participant at the Authorized Location solely for the purpose of evaluating and testing the Equipment during the Evaluation Period. Verso and/or its licensors shall retain all and sole right, title and interest in and to the Equipment and Software, and Participant will not make any representation to the contrary nor permit any lien, claim or encumbrance on the Equipment. Participant shall not itself, nor shall Participant authorize or permit any other person or entity, to manufacture, adapt, rent, lease, lend, trade-in, create derivative works from, translate, reverse engineer, disassemble or decompile or otherwise modify the Equipment or Software or any portion thereof. Verso hereby grants Participant a non-exclusive, nontransferable license to use the software products or programs, if any (the “Software”) shipped with or installed on the Equipment solely for the purpose of evaluating the Equipment during the Evaluation Period. Participant shall not sublicense, modify, create derivative works from, decompile, disassemble, translate, or reverse engineer the Software. Participant shall not copy the Software except for backup purposes and to install the Software. Software or related documentation to any person or entity, except that Participant may (a) disclose or display the Equipment and Software to the employees of Participant participating in the evaluation, or (b) demonstrate the Equipment and Software to Participant’s customers and potential customers as part of product demonstrations. Participant shall at all times protect and maintain the confidentiality of the Equipment, Software and related documentation and all trade secrets, proprietary or confidential information contained therein using at least the degree of care used by Participant with respect to its own proprietary and confidential materials, but in no event less than reasonable care. If Participant does not purchase the Equipment and the Software at the end of the Evaluation Period, Participant shall cease using the Equipment and the Software at the end of the Evaluation Period. Participant shall not remove any copyright, trademark or other intellectual property rights notice from the Equipment, Software or related documentation. Participant shall ensure that the Equipment and Software media is clearly and conspicuously marked “Property of Verso” at all times. Participant shall not disclose the results of its evaluation or testing to any third party (other than Participant’s customer or potential customer participating in the evaluation) without Verso’s prior written consent.

Ability to create the plan

2008-01-09T23:18:00.000-08:00

Ability to create the plan

Once they know where they want to be, successful managers know how to develop a plan that will get them there. That means choosing the right priorities for the situation and developing plans that are aggressive but achievable. Planning is an essential ingredient for a “high achiever” manager, but too many managers fail to plan. Instead, they react, accomplishing much less than the organization is capable of. Having the ability to develop a plan that addresses company goals and objectives positions you for more responsibility. Planning denotes a sense of being proactive vs. reactive. As an IT professionals,One of the most challenging situations faced by highly skilled IT professionals is the opportunity to present to a group. The ability to communicate well in a group setting is often key to advancing or maintaining one's career. In certain roles, one is expected to present frequently, comfortably, and capably. Presenting well requires a combination of knowledge of the topic and audience, presentation preparation and delivery skills, confidence in one's ability, and "stage time". This workshop provides solid information on presenting, builds the participants' confidence, and provides the opportunity to practice in a safe and comfortable environment.The workshop will use technically-oriented examples and skill-building exercises, be conducted by a senior IT, and utilize small, highly interactive sessions.

Punch down tool

2007-12-20T23:11:00.000-08:00

A punch down tool, also called a punchdown tool or a Krone tool (after wiring systems manufacturer ADC Krone), is a small screw-driver sized tool used for connecting wiring to a punch down block[1]. The tool consists of a handle with a spring mechanism inside and at the tip a small square piece of metal with a square hole in it. To use the punch down tool, a wire is inserted in between the two metal blades on a punch down block and the punch down tool is pressed down on top of the wire and the two blades on the punch down block. This requires a bit of pressure until with an audible snap the wire is stripped and contact made as it is pushed down between the two punch down block blades.
66 and 110 blocks require different types of blades.

110 block

2007-12-20T23:04:00.000-08:00

A 110 block is a punch-down block used to connect wiring for telephone systems, data network wiring, and other low-voltage wiring applications.
The 110 block improves on the 66 block by supporting higher frequencies and using space more efficiently.
A punch-down tool is used to force solid wire into metal slots on the 110 block.

A 110 block is a type of punch block used to connect sets of wires in a structured cabling system. 110 is also used to describe a type of Insulation-displacement connector used to terminate twisted-pair cables which uses the same punchdown tool as the 110 block.

Patch Panel

2007-12-20T20:46:00.000-08:00

A patch panel or patch bay is a panel, typically rackmounted, that houses cable connections. One typically shorter patch cable will plug into the front side, while the back will hold the connection of a much longer and more permanent cable. The assembly of hardware is arranged so that a number of circuits, usually of the same or similar type, appear on jacks for monitoring, interconnecting, and testing circuits in a convenient, flexible manner.
Patch panels offer the convenience of allowing technicians to quickly change the path of select signals, without the expense of dedicated switching equipment. This was first used by early telephone exchanges, where the telephone switchboard (a massive array of patch panels) and a large room full of telephone operators running it was ubiquitous.

A panel of network ports contained together, usually within a telecommunications closet, that connects incoming and outgoing lines of a LAN or other communication, electronic or electrical system. In a LAN, the patch panel connects the network's computers to each other and to the outside lines that enable the LAN to connect to the Internet or another WAN. Connections are made with patch cords. The patch panel allows circuits to be arranged and rearranged by plugging and unplugging the patch cords.

CSMA/CD AND CSMA/CA

2007-11-22T17:16:00.000-08:00

We can detect collisions on both by means of listening CSMA/CD, and by the lack of an ACK in CSMA/CA. a network contention protocol that listens to a network in order to avoid collisions, unlike CSMA/CD that deals with network transmissions once collisions have been detected. CSMA/CA contributes to network traffic because, before any real data is transmitted, it has to broadcast a signal onto the network in order to listen for collision scenarios and to tell other devices not to broadcast.

CSMA/CD is used on Ethernet networks (or similar). We can detect any collisions because all the receivers are on the same wire as the transmitters.senses the medium and then immediately transmits. If it detects a collision, it backs off for a random period.

CSMA/CD, when a station has data to send, it first listens to determine whether any other station on the network is occupying the medium. If the channel is busy, the station will wait until it becomes idle before transmitting data. Since it is possible for two stations to listen at the same time and discover an idle channel, it is also possible that two stations could then transmit at the same time. When this occurs a collision will take place, and then a jamming signal is sent throughout the network in order to notify all stations of the collision. The stations will then wait for a random period of time before re-transmitting their respective frames.

CSMA/CA cannot do this as the receivers may suffer a collision due to the hidden terminal problem. Senses the medium, then waits a random number of slots, then senses again. This avoids the problem of all stations waiting until the medium is free, and then immediately all transmitting (i.e. colliding). Therefore introduces slight delays, because of this extra random wait time.

CSMA/CA is a modified version of the CSMA/CD access system. Under the CSMA/CA technique, as before stations are listening to the medium at all times. A station that is ready to transmit a frame will sense the medium, if the medium is busy, it will wait for an additional predetermined time period of DIFS (DCF Interframe Space) length and then, based upon a random calculation, picks a time slot within a contention window to transmit its frame. If there were no other transmissions before this time slot has arrived, it will start transmitting its frame. On the other hand if there were transmissions by other stations during this back-off time period, the station will freeze its counter and will pick-up the count where it left off after the other station has completed its frame transmission. The collisions can now occur only when two or more stations select the same time slot to transmit. These stations will have to reenter the contention procedure to select new time slots to transmit the collided frames.

Difference with CSMA/CD and CSMA/CA

2007-11-21T19:06:00.000-08:00

CSMA/CA stands for Carrier Sense Multiple Access with Collision Avoidance. The difference between CSMA/CD and CSMA/CA is that with CSMA/CA the transmitting station sends the jamming signal FIRST, then the data frame after sufficient time has passed and all other nodes have sensed the jamming signal.

CSMA/CD is the technique used by Ethernet to control access to the shared medium. Any node may attempt to transmit when it senses the medium is silent. If two nodes transmit simultaneously a collision occurs, both nodes stop transmitting, and then wait a random amount of time before attempting to retransmit.

"Im already there.."

2007-11-18T18:40:00.000-08:00

Hi every body, just call me "rey" for short.I am regular student of Holy Child School of Davao. Taking of Information technology course, at the same time i'm working as Student Assistant (SA). Every Saturday, Sunday and Monday im go to school to do my responsibility as SA. Living here alone in davao without the care of the parents is very hard for me. I'm here in davao sence when i was 17 years of age. Im so glad that in my young age, i already have an experience working here in davao in diff. big companies most specialy in different Hotel's. Like, Orange Grove, Hotel Elena and Garden Oasis. Working as a waiter is so hard, because some of the customer is very arrogant. But its okey because, thats the life of being a worker. You apply that kind of work, so you dont have a choice but to survive what ever it is.

Back to school is very hard for me, it is because i dont have any background about computers and everything about computers. I like cooking, my parents say that, why i'm taking this kind of course if my special skills is cooking? I say that, simply because i like to explore my self about computers and knowing about the new technology. hehehehe

Im already here, where in what we call as the final steps of being a student. im afraid to fail now because it is my only chance.