comptia a certification study guide 2012 pdf

... electrical charge? A: Capacitor 419. A parity error usually means a problem with? A: Memory (RAM) 21 A: Perform a full backup 254. What is the cheapest way to access the Internet? A: Dial Up access 255. ... of RAM and what? A: A swap file 445. Memory that is paged out to the hard drive is known as what? A: virtual memory Congratulations!! You have purchased one of the Troy Technologies USA Study ... AUTOEXEC.BAT? A: DOSKEY 40. Which allows faster access; RAM, ROM, or virtual memory? A: RAM 41. What batch file command will stop a batch file operation until a key is pressed? A: PAUSE 42. What...

Ngày tải lên: 11/12/2013, 14:15

... This page intentionally left blank About the Authors xiii daughter, Sara; adorable daughter, Emily; charming son, Jason; and beautiful and talented daughter, Alicia. Dustin L. Fritz (ECSA) is ... specializes in information operations conditions; information assurance vulnerability management; risk and vulnerability assessments; certification and accreditation; security awareness and plan- ning; ... provided support and worked in the areas of pro- gramming, hardware, database administration, graphic design, and network administration. In 2007, he was awarded a police commendation for his work...

Ngày tải lên: 04/07/2014, 13:20

... loopback adapter is a way to test the ports on a system without having to connect to an external device. For example, you can use a serial loopback adapter to verify that a transmitted signal ... coaxial cable and twisted-pair cable are copper cables, and fiber-optic cable uses glass or plastic fibers, different issues may arise for each type of cable. As we look at these types of cabling, ... fiber strands, as this will damage the fibers and make the cable unusable. During installation, special tools will be needed to strip the cable so that the appropriate connector can be attached....

Ngày tải lên: 04/07/2014, 13:20

... credentials to the authenticator, which passes this information to an authentication server. The authentication server may be a RADIUS data- base or another authentication database that compares ... that loops will result and flood the network. VLAN A VLAN is a virtual LAN that allows messages to be broadcast to all of the network devices that are in the same broadcast domain. A broadcast ... forward the packet only to the computer that the data is intended for. Broadcast messages are the messages that are sent out to all of the  nodes in a broadcast domain. A broadcast domain is a...

Ngày tải lên: 04/07/2014, 13:21

... network name, that can be received by attackers sniffing the WLAN. Any authentication information that is broadcast can often be sim- ply replayed to services requiring authentication (NT Domain, ... and purchase new hardware, check to see if you can update the firmware of your AP. The AP vendor may have released a more recent firmware version that supports the disabling of SSID broad- casts. ... contains a high percentage of well-known and predictable information, making it vulnerable to plaintext attacks. How can I prevent unauthorized users from authenticating and as-Q: sociating...

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 10/08/2014, 12:21

Ngày tải lên: 14/08/2014, 20:20

... two) A: Assure that you and the PC are at the same electrical charge level Use anti-static spray liberally 2 Memory Random Access Memory (RAM) - The working area of your PC where programs are ... colors PGA (Professional Graphics Adapter) First video card capable of 3-D displays VGA (Video Graphics Adapter) Replaced PGA and provide 640x480 @ 16 colors SVGA (Super VGA) Same as VGA but provides ... statements is true? A: Each PC can access any other PCs data. 128: Which bus has up to a 16bit path? A: ISA 129: What sort of chip has 168 pins? A: DIMM 36 283: How many bytes are stored in a...

Ngày tải lên: 10/12/2013, 15:15

... either an integer numeric or string value.Thus, for example, an array could contain a floating-point value, a string, a Boolean, and even another array. Although PHP will automatically provide a key ... keys n Creating and handling multidimensional arrays n Sorting arrays n Randomizing arrays n Intersecting arrays n Calculating the difference between one or more arrays n Serializing arrays Creating Arrays The ... In addition, $_REQUEST is a method-agnostic array that you can use to access form data (basically a merge of both $_GET and $_POST). Superglobal arrays are available in every scope, which makes...

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 28/06/2014, 05:20

... 81 Media, 3 Media access control. See MAC Media attachment unit (MAU), 72 Megabits per second (Mbps), 51 Mesh topology, 27 Messaging application program interface (MAPI), 257 Metropolitan area network, ... 431–432 authentication. See Authentication Network address translation (NAT), 291, 345–346, 601 Network analyzer. See Protocol analyzer Network attached storage (NAS), 138–139 Network basic ... 90 transmission, 609 Hardware, 3, 9–11 address. See MAC address security devices, 386–405, 467–468 Hardware compatibility list (HCL), 118 Hardware loopback adapter, 62 Health Insurance Portability...

Ngày tải lên: 04/07/2014, 13:20