CompTIA SY0-201 Security+ Exam Guide phần 5 potx

... - 55 - other application. In most implementations, the application will prompt the user for a password, which will be used to create an encryption key that protects the key store. So, for example, ... certification tools, www.testking.com - 54 - Instead of being revoked, a certificate can be suspended, meaning it is temporarily put on hold. If, for example, Bob is taking an extende...

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

... - CompTIA SY0-201 Security+ Exam Guide Version 2.0 SY0 - 201 Leading the way in IT testing and certification tools, www.testking.com - 5 - v. PC-based ... Servers 4. Network 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 System...

Ngày tải lên: 10/08/2014, 10:21

... 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 ... SY0 - 201 Leading the way in IT testing and certification tools, www.testking.com - 25 - Dumpster diving is not a uniquely computer security–related activity. It refers to the activi...

Ngày tải lên: 10/08/2014, 10:21

... message is a multiple of 51 2. SHA- 256 uses sixty-four 32-bit words, eight working variables, and results in a hash value of eight 32-bit words, hence 256 bits. SHA- 256 is more secure than SHA-1, ... easy to exchange a 4-bit key such as b in hex, but exchanging the 128-bit key 4b36402c5727472d 557 1373d22675b4b is far more difficult to do securely. This exchange of keys is greatly facil...

Ngày tải lên: 10/08/2014, 10:21

... values, each pixel has an RGB value represented numerically from 0 to 255 . For example, 0,0,0 is black, and 255 , 255 , 255 is white, which can also be represented as 00000000, 00000000, 00000000 ... Infrastructure (X .50 9). SY0 - 201 Leading the way in IT testing and certification tools, www.testking.com - 50 - The following fields are included within a X .50 9 digital cer...

Ngày tải lên: 10/08/2014, 10:21

... 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 ... networks is the Ethernet protocol, and the most common connector is the RJ- 45 connector. Figure 8-1 shows a RJ- 45 connector (lower) compared to a standard telephone connector (upper). Addit...

Ngày tải lên: 10/08/2014, 10:21

... three 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 ... 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 media n...

Ngày tải lên: 10/08/2014, 10:21

... greater than 50 percent. Mathematically, we can use the equation 1.25k1/2 (with k equaling the size of the set of possible values), and in the birthday paradox, k would be equal to 3 65 (the number ... 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...

Ngày tải lên: 10/08/2014, 10:21

... queue. In Example 5- 2, similar to Example 5- 1, the fair-queue and random-detect commands are applied to the class-default class. In Example 5- 2 however, random-detect is DSCP-based as Example 5- 2 ... or WFQ to an interface simultaneously either. Example 5- 2 shows a CBWRED case that is similar to the one given in Example 5- 1; however, Example 5- 2 is DSCP based. All AF2s plus...

Ngày tải lên: 14/08/2014, 14:20