CompTIA SY0-201 Security+ Exam Guide phần 6 docx

... Routers operate by examining each packet, looking at the destination address, and using algorithms and tables to determine where to send the packet next. This process of examining the header ... testing and certification tools, www.testking.com - 68 - Once considered by many users to be immune, Apple Macintosh computers had very few examples of malicious software in the wild. This...

Ngày tải lên: 10/08/2014, 10:21

... some cases, a multiport router). 4831x.book Page 461 Tuesday, September 12, 20 06 11:59 AM 4 56 Chapter 8  Networking Fundamentals FIGURE 8.19 Examples of ST connectors Wireless Networks One of ... channels and one D channel. The total bandwidth of a 23B+D ISDN line is 1536Kbps (23 B channels × 64 Kbps per channel +64 Kbps for the D channel). In many cases, to maximize throughput, the t...

Ngày tải lên: 10/08/2014, 12:21

... in IT testing and certification tools, www.testking.com - 1 - CompTIA SY0-201 Security+ Exam Guide Version 2.0 SY0 - 201 Leading the way in IT testing and ... Interface Cards 5. Hubs 6. Bridges 7. Switches 8. Routers 9. Firewalls 10. Wireless 11. Modems 12. Telecom/PBX 13. RAS 14. VPN 15. Intrusion Detection Systems 16. Network Acce...

Ngày tải lên: 10/08/2014, 10:21

... and execute as indicated in the example access control matrix. SY0 - 201 Leading the way in IT testing and certification tools, www.testking.com - 16 - The first thing that you might ... financial institutions, for example, require that certain security measures be taken. Other standards may be set by the organization to meet its own security goals. Guidelines are SY0 - 201...

Ngày tải lên: 10/08/2014, 10:21

... SHA-2 56 SHA-2 56 is similar to SHA-1, in that it will also accept input of less than 264 bits and reduces that input to a hash. This algorithm reduces to 2 56 bits instead of SHA-1’s 160 . Defined ... become a multiple—in this case a multiple of 16 bytes. After padding, a 16- byte checksum is appended to the message. The message is then processed in 16- byte blocks. MD4 MD4 was...

Ngày tải lên: 10/08/2014, 10:21

... covered. Invisible ink placed on a document hidden by innocuous text is an example of a steganographic message. Another example is a tattoo placed on the top of a person’s head, visible only when ... ways and through many different media. Covering them all is beyond the scope for this short study guide, but we will discuss one of the most common ways to encode into an image file, LSB enc...

Ngày tải lên: 10/08/2014, 10:21

... SY0 - 201 Leading the way in IT testing and certification tools, www.testking.com - 56 - and more diversified group of people and organizations. If a company uses a public CA, the ... organization for individual certificates and for the service of maintaining these certificates. Some examples of public CAs are VeriSign (including GeoTrust and thawte), Entrust, and Go Daddy....

Ngày tải lên: 10/08/2014, 10:21

... address spaces are:  Class A 10.0.0.0 – 10.255.255.255  Class B 172. 16. 0.0 – 172.31.255.255  Class C 192. 168 .0.0 – 192. 168 .255.255 The use of these addresses inside a network is unrestricted, ... Unguided Media Electromagnetic waves have been transmitted to convey signals literally since the inception of radio. Unguided media is a phrase used to cover all transmission medi...

Ngày tải lên: 10/08/2014, 10:21

... in the interest of promoting better security for everyone. Information is also gathered through examination and forensic analysis, often after a major incident has already occurred and information ... spreading into your network. Firewalls control traffic flow between zones of network traffic; for example, between the Internet (a zone with no trust) and an internal network (a zone with hi...

Ngày tải lên: 10/08/2014, 10:21

... or game, for example. Once it has been copied and is inside the system, the Trojan will perform its hidden purpose with the user often still unaware of its true nature. A good example of a ... scheme utilizing a 40-bit key would be much easier to attack than a scheme that utilized a 2 56- bit key. The bottom line is simple: an exhaustive search of the keyspace will decrypt the messa...

Ngày tải lên: 10/08/2014, 10:21