What is SEO?

SEO stands for Search Engine Optimization. It’s the strategy of developing and improving your website so that it ranks highly on search engine result pages, preferably on the first page of results. We know that at least 75% of searchers never scroll past page 1 on Google. This means that we must make it to the first page in order to be considered by the vast majority of searchers.

Power Bank

1) What’s power bank?

Power bank serve as an ‘extra battery’ or external charger for your phone or other electronic devices.

2) Where is power bank made from?

Majority of the power banks in the market are actually made in China.

3) How do I charge the power bank?

You can charge your power bank via the charger that came with your phone, computer usb port or using other power bank

4) How long do I need to charge the power bank?

It’s depending on the REAL CAPACITY of the power bank. The larger REAL CAPACITY, the longer charging time may required. Different charging methods may result different charging time as well. Charging with the original charger will be faster than charging with computer usb port.

5) Why sometime I need longer time to charge the same power bank?

Even though using the same charging method, the charging time may be differ due to environment,temperature, power flow and etc

6) What is mAh?

mAh mean milli Ampere Hour, the capacity of the power bank is measure with mAh

7) A 12000mAh REAL CAPACITY power bank, able to charge a 1500mAh capacity phone for 8 times full?

This is a common mistake make by most of the people. For rough calculation of the total charge time, kindly use this formula
REAL CAPACITY * conversion rate * phone battery health / phone capacity = total charge times
EXAMPLE: 12000 x 0.8 x 0.8 / 1500 = 5.12 charge times (0.5-1 times plus minus)

8) What’s conversation rate?

Conversation rate is the remaining percentage of the battery after the battery lost in heat or PCB operation.

9) What’s phone battery health?

In simple, it’s mean how‘healthy’ your phone battery is. Phone battery storage capacity will be lower and lower. That’s also the reason why our phone can last longer when it’s newly bought than after 3-6 months we used it. Different mobile phone models also will affect the calculation as some phone drain battery faster than the other.

10) What’s PCB?

PCB means Printed Circuit Board,its control all the operation flow inside the power bank. A good quality PCB will allow the power bank to charge more and have better durability

11) What’s 18650 power bank and what’s Li-Polymer power bank?

The common type will be 18650 and a better type will be Li-Polymer

12) What’s the different between 18650 and Li-Polymer?

- 18650 size and dimension are fix. Li-Polymer size and dimension are flexible.

- 18650 produce more heat. Li-Polymer are much more safer

- 18650 are cheaper. Li-Polymer are more expensive

- 18650 have higher self discharge rate.Li-Polymer have a very low self discharge rate

- 18650 battery durability will drop faster.  Li-Polymer battery capacity are more durable

13) What’s the common mAh use in 18650?

Common mAh use in 18650 is around 1300mAh to 2200mAh.

14) What’s the common REAL CAPACITY in 18650 power bank in the market?

- Power bank using 1pcs 18650 is 1200mAh – 2600mAh

- Power bank using 2pcs 18650 is 2500mAh – 4400mAh

- Power bank using 3pcs 18650 is 3750mAh – 6600mAh

- Power bank using 4pcs 18650 is 5200mAh – 8800mAh

- Power bank using 5pcs 18650 is 6500mAh –11000mAh

- Power bank using 6pcs 18650 is 7800mAh –13200mAh

- Power bank using 7pcs 18650 (no info)

- Power bank using 8pcs 18650 is 10400mAh –14400mAh

15) Is there any power bank use higher than 2200mAh per 18650?

Yes. There are, but it’s not common due to the expensive pricing.

16) What’s the different between branded power bank and generic power bank?

Branded power bank mostly sell in REAL CAPACITY. Generic power bank mostly sell in MARKING CAPACITY. That’s the reason why you will never see any branded power bank (standard size) have anything as high as 30000mAh – 50000mAh. That’s also the reason why a good 12000-13000mAh power bank are able to charge more or about the same like the market 30000-50000mAh power bank

17)  Is it true branded power bank won’t explode and generic power bank will explode?

Anything to do with battery, will have chance to explode. No matter it’s branded power bank or generic power bank.But chances for both branded and generic power bank to explode are near to 0%.If power bank is easy to explode, everyone will use power bank in war instead of bomb

Why does x86 mean 32-bit?

Technically x86 simply refers to a family of processors and the instruction set they all use. It doesn't actually say anything specific about data sizes. 

x86 started out as a 16-bit instruction set for 16-bit processors (the 8086 and 8088 processors), then was extended to a 32-bit instruction set for 32-bit processors (80386 and 80486), and now has been extended to a 64-bit instruction set for 64-bit processors. It used to be written as 80x86 to reflect the changing value in the middle of the chip model numbers, but somewhere along the line the 80 in the front was dropped, leaving just x86. 

Blame the Pentium and it's offspring for changing the way in which processors were named and marketed, although all newer processors using Intel's x86 instruction set are still referred to as x86, i386, or i686 compatible (which means they all use extensions of the original 8086 instruction set). 

x64 is really the odd man out here. The first name for the 64-bit extension to the x86 set was called x86-64. It was later named to AMD64 (because AMD were the ones to come up with the 64-bit extension originally). Intel licensed the 64-bit instruction set and named their version EM64T. Both instruction sets and the processors that use them are all still considered x86.

Which of the following are valid ports for printing over a network? (Select TWO).

 
A. USB 001
B. \\computername\sharename
C. SNMP
D. IP_ip_address
E. IEEE 1394

Answer: B and D 

Where should a security tester be looking for information that could be used by an attacker against an organization? (Select all that apply)

A. CHAT rooms
B. WHOIS database
C. News groups
D. Web sites
E. Search engines
F. Organization's own web site

Answer: A, B, C, D, E, F

Explanation: A Security tester should search for information everywhere that he/she can access. You never know where you find that small piece of information that could penetrate a strong defense. 

Action Center

A feature in Windows 8.1 by which you can view and fix problems and run automated troubleshooters, among other things. 

Anonymous FTP

A method by which computer files are made available for downloading by the general public .