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Personal computer Network Topology

Large numbers of computer system sites benefit from wifi ways of go records from just one process to an alternative, nonetheless a large number of online communities even so apply certain type of electrical wiring (Birdwatcher or possibly Fiber Optic) for connecting systems. The way line together with devices, or cordless information url to 1 another to make a multi-level referred to as the particular ‘network ‘ Topology. Famous circle topologies consist of Coach, Engagement ring, and also Music artist, when contemporary topologies comprise of Mixture, Mesh, Point-to-Multipoint, together with Point-to-Point.

Heritage Topologies



Shuttle bus: A fabulous shuttle topology works on a solo shuttle cable connection which hooks up all of the pcs from a collection, and even facts fades around the general motorcoach. To forestall records coming from highlighting along at the closes of this cable television as well as establishing unwarranted traffic a fabulous tour bus topology must have terminators each and every last part in the cord.

Wedding ring: A hoop topology is just like any mci motor coach topology except that it all leads just about all computer systems with a middle engagement ring connection, consequently there isn’t any real finishes for the motorcoach and this doesn’t require canceling. The info passes in a very radius from one computer system to another location inside exact guidance.

*If a connection is definitely harmed at any point in a very tour bus or even hoop topology the total group breaks down. The actual broken ends in any shuttle bus topology generates reflectivity of info between your also linked laptops because cancellation time has stopped being connected to the system. A new destroyed cable connection in the arena topology rests the particular world plus can stop the move of web data.

Celeb: An important superstar topology runs on the key relationship issue for all computer systems at a group, that offers mistake limit out of stock together with shuttle bus and also hoop topologies. In the event that each one of these interconnection is cracked in any movie star topology other systems at the networking commonly are not stricken and able to give and even get facts.

Present day Topologies

Hybrid: Any crossbreed topology includes characteristic within the motor coach rv and also band topologies together with the superstar topology by shrinking the actual tour bus and / or diamond ring towards a small-scale pack booked a mainstay which will serves the intention of typically the important internet connection level and / or music artist. Star-bus and star-ring topologies mentally or physically look like music artist topologies despite this specific digital schematics act like a good mci motor coach or even wedding ring. Every topology that mixes an actual topology by using an electric powered signalling topology is actually a Crossbreed Topology.

Capable: A capable topology links every last technique to every single additional strategy in a group thru two or more avenues, from time to time demanding certain routes to navigate by means of an alternative procedure within the to be able to networking. A new partially meshed topology involves as a minimum two methods having redundant relationships, each and every laptop does not have to hook up with any pc. Within a totally meshed topology every desktop computer logs onto straight to every other computer. A new meshed topology is quite stronger and in case one single internet connection can be cracked the particular models commonly are not affected, yet a result of the intricacy of binding converter cables come back any personal pc from a networking any allow air through topology just isn’t helpful designed for cabled cpa affiliate networks and can commonly basically noticed in cordless networks.

Point-to-Multipoint: A new point-to-multipoint topology carries a one pc which is used a typical resource whereby the rest of the programs within the multilevel opposite. Like the music artist topology because you will find there’s main place, the real difference is inside the machine that is available in the middle of all the networking. The core of the celebrity topology is little eco-friendly tea’s health benefits pathway to your records to journey to the many units, unlike the midst of a new point-to-multipoint topology involves the proper center, router, or possibly change which often adjustments the knowledge flow on the alternative models inside the networking. The particular point-to-multipoint topology is oftentimes known as a Shrub Topology which is generally known as a good System ‘network ‘.

Point-to-Point: Your point-to-point topology features two pcs immediately affiliated in addition to no need for a fabulous essential center, the router, or simply switch. Point-to-point topologies can be found throughout the born and also wireless networks. They are known as Ad-hoc or Expert to Peer cpa networks.

Via HamsterGamer - games. gamer. hamster.

Motorola Talkabout 2-Way Radios MC220R – Review

Motorola Talkabout 2-Way Radios MC220R



Motorola Talkabout 2-Way Radios MC220R

My wife and I were looking for portable 2-way radios for her wedding coordination group and my photography. We decided to buy something that is locally available and I found this, Motorola Talkabout 2-Way Radios MC220R.

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1 set contains 2 radios which comes with 2 batteries, 2 belt clips, a charging cradle/mount which can charge 2 radios and a power supply for the charger. The power supply that came with the charger was 110V, but the vendor was kind enough to include a 110V to 220V converter for free. :)

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A closer look at the Motorola Talkabout 2-Way Radio MC220R. It has a simple design with all the buttons on the front and the volume at the top of the unit. It’s very light and compact yet rugged enough for everyday use. The speaker is loud enough to be heard in a public place like a shopping mall or in the streets. The mic of the unit also delivers good voice quality. Navigating through the different functions in the radio is easy. I figured out all its functions without reading the manual and this is my first Motorola 2-way radio unit.

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At the side you can find the Push-to-talk (PTT) button. Accessible and easy to press.

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At the other side is the headphone/headset/earbud plug. I bought the earbud with the PTT mic. Useful when shooting events and situations where silence is needed.

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At the backside you will find the cover to the battery compartment and the hole where you attach the belt clip.

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Inside the battery compartment. It’s a nice feature to include that ribbon strip. It really helps in quickly and easily removing the battery pack.

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This is the battery pack. It’s made up of 3 AA batteries. If the pack rans out, you can just replace it with any AA battery. This is another reason why I like this battery. AA batteries are common and easily available including the rechargeable versions. So purchasing backup and replacement batteries is not a problem.

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This is how it looks with the battery pack installed.

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The belt clip. This is one of the thing that I don’t like about the unit. The clip looks fragile, I don’t use the clip and instead I bought a pouch for it. The pouch was originally for a mobile phone. Because of the small size of the radio unit, its not hard to find a cellphone pouch that fits.

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The 2 sets of radios mounted on the charging cradle. Charging the units takes around 8 hours. It’s a good thing the vendor included in the package a 110V to 220V converter for free.

Battery Life
Regarding the batteries, they only last around 6 to 8 hours depending on how often you transmit over the radio. But because it’s powered by AA batteries, its not hard to find backup batteries for this unit. Even if you already used up all your rechargeable batteries, you won’t have problem looking for alkaline batteries from stores.

Radio Range
The features indicate 16 miles or 25.75 kilometers. In my own experience, it didn’t reach that range. In the mountain areas with thick vegetation and foliage, the range is drastically lowered. With thick forest and mountain range, you’ll be lucky to get a good signal over 1km. I’ve tested these radios in the mountains of Talamban, Cebu and in Olango Island and there are times when I can barely get a signal from someone back at the campsite and I was only about 1km away from it. But there were a lot of thick vegetation and foliage between us.

Fortunately, my wife and I use these for events which doesn’t require that much range. I’ve tested this in malls and 5 star hotels and I get good coverage from the executive rooms down to the basement parking.

If you seriously need the range, get the higher models like the Motorola Talkabout MR350R or the MR356R. My only problems with the higher versions is their face plate design since its camouflage design. I recommend you purchase the face plate replacements with a different more “civilian” looking design. It’s not advisable to be bringing devices with camouflage design in photo treks in the local mountain ranges of the Philippines.

Overall
I love these units and I’ll be purchasing similar models in the future. Very useful for those who need 2-way radios for use in events and activities that don’t require range distances of 5km and above.

Note: I will update this topic from time to time giving you my opinion regarding this model over time.

Via dbgg1979

Kabang Waterfalls at Budla-an, Talamban, Cebu City



Kabang Falls at Budla-an, Talamban
A waterfalls within the Cebu City’s boundaries located at Sitio Budla-an, Talamban.

Group photo at the Kabang Falls, Budlaan, Talamban.
Group with iStorya.net Photography Club buddies and guides. Photo taken at the base of the waterfalls. I decided to take one photo from the top to give viewers some reference as to how high the waterfalls is.

The rest of the photos can be viewed here: http://www.flickr.com/photos/dbgg1979/sets/72157627740523090/

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The Kalesa

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A kalesa or calesa (sometimes called a karitela) is a horse drawn calash (carriage) used in the Philippines. The word, also spelled calesa, predates the Spanish conquest and descends ultimately from an Old Church Slavonic word meaning “wheels.” This was one of the modes of transportation introduced in the Philippines in the 18th century by the Spaniards that only nobles and high ranked officials could afford. They are rarely used in the streets nowadays except in tourist spots and some rural areas. The Kalesa driver is commonly called as “Cochero” or “Kutsero”. When “Cochero” direct the horse to turn right he says “mano” and he says “silla” to direct the horse to turn left. – Wikipedia

Via dbgg1979

The Church of Baybay City

The Church of Baybay City in IRA Roman Catholic Church made during the Spanish Occupation.

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Photos from the Old School meets New School Photowalk

Old School Meets New School PhotowalkThe group photo at the starting point – Magellan’s Cross across the City Hall.

Random snapshots before the start of the photowalk.

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Here are some of the photos I took during the photowalk.

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The rest of the photos can be viewed in this Flickr set: http://www.flickr.com/photos/dbgg1979/sets/72157627298190917/

Via dbgg1979

Cebu Pizzeria – Pizza Delivery from Ryan’s Pizzarelli

Papa visited us here in Cebu. I was busy with my usual chores in a Monday but I didn’t want him to go back to Leyte without spending some time together. Pops was also here for business but luckily he finished early and we had a few hours together here in the apartment before his trip back to Leyte. Tisha and I decided to just have dinner at home and just have food delivered. We decided to have pizza & calzone from Ryan’s Pizzarelli
Pizza from Ryan's Pizzarelli
We had the Harsimran’s Special and Romantico Calzone. I’m not a professional food critic, but let me just tell you the pizza they make are some of the best pizza’s in Cebu City. Check them out at Ryan’s Pizzarelli

Via dbgg1979

The desire to reach for the sky runs deep in our human psyche. ~ Cesar Pelli

The desire to reach for the sky runs deep in our human psyche.  ~ Cesar Pelli
The landscape somewhere in the mountains of Cebu City.

Photos taken earlier before the sunrise.
2011-07-23 somewhere in busay
2011-07-23 somewhere in busay-4

Via dbgg1979

Energizer 7LED Headlight

After numerous sunrise & sunset photo trips, I finally decided to buy a headlight. I realized a head mounted light can be very useful because both of your hands are free to do something else. For sunrise, we usually arrive at the place around 4am so its really dark. For sunsets, it can get dark really quick right as soon as the sun is out of sight.

Since I’m on a budget, I settled with the Energizer 7LED Headlight. I bought this at Handyman Robinsons Fuente Osmeña for only P699.00 and it already comes with 3 x AAA Energizer Batteries.
Energizer 7LED Headlight

This headlight has 4 light modes. The batteries can last up to 30 hours depending on which light mode is used.
- Night Vision (2 LED red) – 30 hours
- Flood (3 LED white) – 20 hours
- Spot (2 LED white) – 30 hours
- Spot & Flood ( 5 LED white) – 16 hours

Here’s a closer look at the LEDs. I have placed notes on the photo, please click on the photo and you will be redirected to my Flickr photostream where the photo has notes.
Energizer 7LED Headlight

The headlight can tilt down to suit your preferred angle.
Energizer 7LED Headlight

The strap is comfortable and easy to adjust. My only comment about it is that it should have another strap running from the headlight to the top of your head and down to the back connecting to the main strap for added support. If you use this for jogging or fast paced trekking, you’ll be adjusting this a lot.
Energizer 7LED Headlight

The battery compartment is located right behind the LEDs. Even with this design, the headlight just weights right and doesn’t fall down due to the weight. Other headlight designs have a separate battery compartment which is placed at the back end of the headstrap or at the back of your head for distribution of the weight. It has a soft material on the back that serves as a cushion as the headlight rests on your forehead. The cover of the battery compartment is secured by 2 locks one on each side. The headlight and the battery compartment has IPX4 rating. Meaning it can take water splashing from any direction without any damage.
Energizer 7LED Headlight

The battery compartment takes 3 x AAA batteries. The package already comes with 3 x AAA batteries.
Energizer 7LED Headlight

The Light Modes

1. Night Vision mode. Only the 2 Red LEDs light up. I think this is useful if you are using a night vision device. The red LEDs are supposed to help illuminate the area.
Front View
Energizer 7LED Headlight
Side View
Energizer 7LED Headlight
Red LEDs used. Distance to wall around 1.5 meters. Light spread around 1 meter including the faded area.
Energizer 7LED Headlight

2. Flood Mode. 3 big White LEDs light up.
Energizer 7LED Headlight
Energizer 7LED Headlight
Distance to the wall is 1.5 meters. The light spread measures around 1 meter in diameter. This is very usefull for walking around in the dark and at the same time saving on battery power.
Energizer 7LED Headlight

3. Spot Mode. 2 smaller White LEDs light up.
Energizer 7LED Headlight
Energizer 7LED Headlight
The diameter of the light spread including the light fall off is around 1 meter. The spot however measures around 1 foot. This is probably useful for me when I’m working on something. Like fixing a PC or doing more DIY projects. :)
Energizer 7LED Headlight

4. Spot & Flood Mode. All 5 white LEDs light up.
Energizer 7LED Headlight
Energizer 7LED Headlight
This mode basically combines the effect of the spot and the flood mode. You get around 1meter light spread with a bright spot light at the center. This mode drains the batteries quicker as I mentioned earlier in this post cutting battery life to almost half.
Energizer 7LED Headlight
This is probably best used in emergencies when you are in a hurry and moving around in the dark.

I have only tested this light indoor and so far the Energizer 7LED Headlight has met my expectations.

I only have 2 complaints about the product so far.

1. The button. I have to click on it to get to the other modes which is kind of annoying specially that the button is a little bit hard to press on. I recommend you hold the headlight with one hand and press on the button with the other.
2. The Strap. It would have been better if they added another strap that runs from the headlight to the top of your head and to the back end of the main strap. This will give the headlight better support since all the weight is in the front.

Hopefully if the weather permits, I will be able to test this on the field tomorrow for the scheduled sunrise photo trip at the mountains of Busay, Cebu.

I will update this post as I spend more time using the headlight. (durability and IP rating)

Via dbgg1979

New Hat!

New Hat! :)
Omni Shade by Columbia

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