comptia a certification exam guide

... 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

... 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. ... 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 ... 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...

Ngày tải lên: 11/12/2013, 14:15

... Configuration 3. Network and Database Availability 4. Database Structure and Object Creation 5. Oracle Usage and Database Security 6. Backup, Recovery, and Data Loads 7. Database Tuning and Troubleshooting 8. ... containing data about a running Oracle instance. ã LocksãElements in the Oracle database that ensure that only one user at a time can make a change to any particular item of data. ã LatchesãElements ... more datafiles. Each datafile can belong to one and only one tablespace. ã Data blocks are subsets of datafiles. Each datafile will contain many data blocks, each of which is exactly the same...

Ngày tải lên: 17/01/2014, 09:20

... pass. The CompTIA A+ Essentials Exam The CompTIA A+ Essentials Exam (220-601) covers the basics of computer maintenance and support across the CompTIA A+ domains, or exam areas. Table 1-2 provides a ... breakdown of the exam areas that are covered on the CompTIA A+ Essentials Exam. This exam puts heavy emphasis on personal computer components and operating systems. Table 1-2 CompTIA A+ Essentials ... Understanding A+ Certification and its benefits ߜ Looking at the exams and their objectives ߜ Preparing for the exams ߜ Arranging to take the exams ߜ Test day S o you are interested in taking the CompTIA...

Ngày tải lên: 25/03/2014, 15:21

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

... Conserve Addresses 320 Private Network Addresses 322 Multicast, Broadcast, and Unicast 329 Understanding Basic IP Routing 335 Summary of Exam Objectives 346 Exam Objectives Fast Track 348 Exam ... Developmental Editor: Gary Byrne Copy editor: diacriTech, Chennai, India Indexer: diacriTech, Chennai, India Cover Designer: Alisa Andreola For information on rights, translations, and bulk sales, ... limitation may not apply to you. You should always use reasonable care, including backup and other appropriate precautions, when working with computers, networks, data, and les. Syngress Media đ ,...

Ngày tải lên: 04/07/2014, 13:20

... 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

... “snapshots” of you taken from virtualization software such as VMware as an example. Restoring a system, its data and add- ing more storage, hardware resources, and services becomes very easy ... computer named UNIVersal Automatic Computer (UNIVAC). UNIVAC was the first computer to use magnetic tape instead of paper cards to store programming code and data, and much faster than What Is a Network? ... two and a half years to design and build ENIAC I, at a cost of half a million dollars. The ENIAC I was faster than previous computers, and used to per- form calculations for designing a hydrogen...

Ngày tải lên: 04/07/2014, 13:20

... are available as software (such as Windows VPN, available on Windows 2003 and 2008) and hardware (firewalls such as Cisco PIX or ASA and Nokia/Checkpoint) implementations. In general, software ... into their local ISPs and create a virtual tunnel to the office. A tunnel is created by wrapping (or encapsulating) a data packet inside another data packet and transmitting it over a public medium. ... encapsulated at the source and unwrapped at the destination. The process of establishing the VPN and wrapping and unwrapping the data is transparent to the end user. Most commercially available...

Ngày tải lên: 04/07/2014, 13:20

... of LANs and WANs that data may pass through. LANs may be as small as a couple of computers networked together, and a WAN may be as large as the Internet or as small as two LANs (yours and ... isn’t a defining factor. WANs are often owned and managed by more than one organization. Each LAN that is part of the WAN may be managed by individuals or IT departments, and either maintains ... a WAN is a network that is larger than a LAN. What distinguishes a LAN from a WAN in terms of area is ambiguous and speculative at best. LANs are small- to medium-size networks, and generally...

Ngày tải lên: 04/07/2014, 13:20

... this information, which of the Offices are part of a LAN and a WAN? A.  Office A and B B. Office B and C C. Office C and D D. The entire network (Office A, B, C, and D) An organization has offices ... lines. A MAN is a group of LANs that are internetworked within a local  geographic area, which the IEEE defines as being 50 km or less in diameter. 45 EXAM OBJECTIVES IN THIS CHAPTER CABLING AND ... receptionists are automatically uploaded to the PDAs whenever the sales staff enters the main reception area. What types of networks are being used in this environment? Choose all that apply. A.  MAN B....

Ngày tải lên: 04/07/2014, 13:20

... signals to transmit data. Bandwidth Bandwidth is a measurement of the amount of data that can be passed over a cable in a given amount of time. If you compare cabling to a highway, and data to ... detail later in this chapter, be aware that there are three types of physical media that can be used on a network: Coaxial cable Twisted-pair cable Fiber-optic cable Coaxial cable, also ... provides an access point for data to move along the cable to its intended destination. The purpose of a cable is to carry data across a network. A network card passes an electronic signal onto a cable...

Ngày tải lên: 04/07/2014, 13:20

Ngày tải lên: 04/07/2014, 13:20

Ngày tải lên: 04/07/2014, 13:20

Ngày tải lên: 04/07/2014, 13:21

Ngày tải lên: 04/07/2014, 13:21