By Pawan K. Bhardwaj
If you are getting ready for the hot CompTIA 2006 certification in A+, or the present community+ and defense+ certifications, you will discover this ebook priceless. It presents all of the details you want to prepare for those tests, together with the 4 new A+ tests -- the mandatory necessities examination and 3 non-obligatory checks that pertain in your quarter of specialization.
As with different O'Reilly Nutshell books for certification checks, A+, community+ and protection + in a Nutshell follows a confirmed type and technique. It studies the entire themes had to grasp each one examination in a remarkably concise layout, with required wisdom boiled all the way down to the center. rather than plowing via 500 to seven-hundred pages to organize for every examination, this e-book covers every one in nearly one hundred fifty pages. and as the pursuits for the 3 non-obligatory A+ tests are redundant, and the publication covers them in a single section.
The tests lined include:
- A+ necessities: Required for A+ 2006 certification
- EXAM 220-602: For the A+ IT Technician specialization
- EXAM 220-603: For the A+ distant help Technician specialization
- EXAM 220-604: For the A+ IT Depot specialization
- EXAM N10-003: For community+ Certification
- EXAM SYO-101: For safety+ Certification
Each examination is roofed in 3 elements: examination evaluation, examine advisor and Prep and perform. lots of particular tables and display photographs are integrated, in addition to research notes and perform questions. upon getting accomplished the assessments effectively, you can find this all-in-one e-book to be a beneficial connection with middle management and protection skills.
Read or Download A+, Network+, Security+ Exams in a Nutshell: A Desktop Quick Reference (In a Nutshell (O'Reilly)) PDF
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Extra info for A+, Network+, Security+ Exams in a Nutshell: A Desktop Quick Reference (In a Nutshell (O'Reilly))
These are explained in the following paragraphs: Parity RAMParity RAM uses a parity checking mechanism to check the integrity of digital data stored in memory by detecting errors. Memory modules using parity checking are known as parity RAM. These modules are hardly used these days. A parity bit is used as error-detecting code. The parity bit is a binary digit (0 or 1) that indicates whether the total number of bits with a value of 1 in a given set is even or odd. Two types of parity bits are used: even parity bit and odd parity bit.
If the total count of 1s is odd, the bit is set to 1. On the other hand, the odd parity bit is set to 0 when the total count of 1s in the given set is odd. If the total count of 1s is odd, the bit is set to 0. Parity checking is only a method of checking errors. It does not indicate the cause of the error and does not correct it. Non-parity RAMIf parity RAM is used, the memory modules need to have more chips for calculation of parity. This not only increases the size of the module but also increases costs.
This connector is bigger than the floppy drive power connector. It has a particular rectangular shape that allows the connection only in correct polarity. It uses the same color codes for wires as the floppy drive power connector does. AT motherboard power connectorThis is a pair of two connectors with six pins each. The connectors have small tabs on them so that they can be securely attached to the motherboard connector. You need to place the connectors side by side with black-colored wires in the center, align the connectors in correct orientation, and then slightly push them together onto the motherboard connector.