lpic 2 linux professional institute certification study guide 2nd edition

... the following SQL code to first add $250 to account 1001 and then subtract $250 from account 2002: first transaction and completion of the second transaction, $250 would have been added to account ... Agreement (SSAA) that guides the entire certification and accreditation process Authori-Phase 2: Verification Includes refinement of the SSAA, systems development activities, and a certification analysis ... concerns that should be fore-most on the mind of any information security professional engaged in solutions development Trang 22Software DevelopmentSecurity should be a consideration at every stage

Ngày tải lên: 14/08/2014, 18:20

... decryption operation: E(K1,D(K2,E(K3,P))) The third version of 3DES (DES-EEE2) uses only two keys, K1 and K2,as follows: E(K1,E(K2,E(K1,P))) The fourth variant of 3DES (DES-EDE2) also uses two keys but ... were used to obtain the out-put value 10,718,488,075,259? Not so simple, eh? (That number is the product of the prime numbers 17093, 22441, and 27943.) There are actually 8,363 five-digit prime ... common hashing algorithms in use today:  Message Digest 2 (MD2)  Message Digest 4 (MD4)  Message Digest 5 (MD5) Trang 26Symmetric Cryptography 271 Secure Hash Algorithm (SHA)  Hash-Based Message

Ngày tải lên: 14/08/2014, 18:20

... your policies and contact your insurance professional to ensure that you’re still covered. 4335c16.fm Page 481 Thursday, June 10, 2004 5:40 AM Trang 24482 Chapter 16  Disaster Recovery PlanningTerrorist ... Flood hazard map for Miami-Dade County, Florida 4335c16.fm Page 479 Thursday, June 10, 2004 5:40 AM Trang 22480 Chapter 16  Disaster Recovery PlanningIf you live in an area susceptible to a certain ... can paralyze your business’ ability to continue functioning 4335c16.fm Page 482 Thursday, June 10, 2004 5:40 AM Trang 25Disaster Recovery Planning 483If you quickly answered no when asked if you

Ngày tải lên: 14/08/2014, 18:20

... countermeasures, 229 defined, 620 laws against, 512 logic bombs, 226 sources of, 220–221 Trojan horses, 226 viruses, 221–226 worms, 227–228 man-in-the-middle attacks, 43–44 on cryptography, 308 defined, 621 ... cryptography, 271 AES, 275 Blowfish, 274 DES, 271–272 IDEA, 273–274 keys in, 267–268, 268, 275–277, 641 Skipjack, 274 Triple DES, 272–273 symmetric multiprocessing (SMP), 320, 641 SYN flood attacks, 41, 232–233, ... 337, 622 memory pages, 622 mesh topology, 73, 74 Message Digest (MD2), 293–294, 621 Message Digest (MD4), 294, 621 Message Digest (MD5), 294, 621 message digests, 292, 622 metadata, 191, 622 metamodels,

Ngày tải lên: 14/08/2014, 18:20

... Trang 1Practical LPIC-1 Linux Certification Study Guide — David Clinton Trang 2 Practical LPIC-1 Linux Certification Trang 3David Clinton Toronto, Canada ISBN-13 (pbk): 978-1-4842-2357-4 ISBN-13 ... 37472675276 Used Available Use% 123047744 325593964 Mounted on 28% / none /dev 7259121% /run 51200% /run/lock 35889642% /run/shm 1023441% /run/user /dev/sdb1 499008 3456 4955521% ... the LPIC-1: the LPIC-2 (Linux Network Professional Certification) and LPIC-3 (Mixed Environments, Security, or Virtualization and High Availability) This book is based on the April 2015 edition

Ngày tải lên: 14/05/2018, 15:10

... Trang 1Practical LPIC-1 Linux Certification Study Guide — David Clinton Trang 2 Practical LPIC-1 Linux Certification Trang 3David Clinton Toronto, Canada ISBN-13 (pbk): 978-1-4842-2357-4 ISBN-13 ... real RAM Trang 37472675276 Used Available Use% 123047744 325593964 Mounted on 28% / none /dev 7259121% /run 51200% /run/lock 35889642% /run/shm 1023441% /run/user 4955521% /boot/efi ... 122 Test Yourself 122 Answer Key 123 ■ Chapter 9: Topic 109: Networking Fundamentals 125 Fundamentals of Internet Protocols 125 Transmission Protocols 125 Network Addressing 125 IPv4 126

Ngày tải lên: 04/11/2019, 07:47

... January 18, 2038 22:14:07 The correct answer is A.The UNIX epoch is January 1, 1970 00:00:00 UTC On 32-bit systems, the date functions are only guaranteed to work until January 19, 2038 5 Internally ... find the time stamp for the current time tomorrow, you can-not simply look 24 hours in the future, as it might be 23 or 25 hours if you cross a day-light saving time boundary.strtotime()takes this ... this code will cause $tsto be set to -1, indicating an error: $ts = strtotime(“Fri, 9 Jan 2004 03:26:23 +0000 GMT”); strtotime()has become confused because two separate time zone offsets (+0000and

Ngày tải lên: 17/10/2013, 21:15

... PHP configuration directives Thus, the following <?php print “Testing 1 2 3” ?> is longer than <?= “Testing 1 2 3” ?> But not quite as portable Note, also, that there is a subtle difference ... your code will be well-written from the very start In this chapter, we’ll provide you with some guidelines on writing efficient code, debug-ging faulty scripts, and identifying bottlenecks when ... languages Answer D is incorrect because safe_modedoes not attempt to prevent database access Trang 2Debugging and Performance MAKING MISTAKES IS HUMAN, and so is fixing them In your day-to-day program-ming

Ngày tải lên: 24/10/2013, 12:15

... Trang 1Troy Technologies USAA+ CERTIFICATION STUDY GUIDE Core Exam Edition 4 Trang 2You have purchased one of the Troy Technologies USA Study Guides. This study guide consists of a selection of ... 10MB 16Wide SCSI 32 5MHz 20MB 16SCSI-2 Fast 8 10MHz 10MB 8Fast & Wide SCSI 16 10MHz 20MB 16Fast & Wide SCSI 32 10MHz 40MB 32Ultra SCSI 8 20MHz 20MB 8Ultra Wide SCSI 16 20MHz 40MB 16 Printers ... Pin Package) 8088, 8086, 80286 PGA (Pin Grid Array) 80286, 80386, 486 Pentium, P6 PLCC (Plastic Leaderless Chip Carrier) 80286, 80386 PQFP (Plastic Quad Flat Pack) 80286, 80386, 486 Real Mode

Ngày tải lên: 10/12/2013, 15:15

... USATrang 2You have purchased one of the Troy Technologies USA Study Guides. This study guide consists of a selection of questions and answers similar to the ones you will find on the official A+ Certification ... version of DOS. 122 What is the maximum number of FAT entries allowed on a DOS partition? A: 65536 123 What is the only file that can be loaded before HIMEM.SYS? A: SETVER.EXE Trang 20124 Your sound ... driver. 125 Where is Extended memory located? A: Above 1024KB 126 Each line of CONFIG.SYS specifies some type of configuration such as? A: Device drivers and system settings 127 What are 2 alternate

Ngày tải lên: 11/12/2013, 14:15

... 271 IPP, 268 NetBT, 265–266 NNTP, 272 NTP, 274 POP, 270–271 RIP, 274 SMB, 267–268 SMTP, 270 SNMP, 274–275 Telnet, 269 WINS, 266–267 WinSock, 268–269 Networking topologies, logical, 14–24 centralized, ... 322–329 benefits of, 324–325 class A, 323, 324 class B, 323, 324 class C, 323, 324 considerations, 324–329 DHCP operations, 326–329 relay agents, 328–329 static and dynamic assignments, 325–326 ... 118–120 types and operation, 120 updating drivers of, 585–586 wireless, 649 Networking protocols, 278–279 advantages of, 576–577 DHCP, 269–270 DNS, 12, 273–274 FTP, 272–273 HTTP, 271–272 IMAP, 271

Ngày tải lên: 04/07/2014, 13:20

... Network+ certification study guide / Robert J Shimonski [et al.] — 2nd ed p cm Includes index ISBN 978-1-59749-429-8 (pbk : alk paper) 1 Computer networks—Examinations—Study guides 2 Electronic ... Trang 2CompTIA Network+ Certification Study Guide Trang 3This page intentionally left blankTrang 4CompTIA Network+ Certification Study Guide Exam N10-004 2E Robert J Shimonski ... Electronic data processing personnel—Certification I Shimonski, Robert TK5105.5.C6357 2009 004.6—dc22 200902129 Printed in the United States of America 1 2 3 4 5 6 7 8 9 0 Trang 6Contents About

Ngày tải lên: 04/07/2014, 13:20

... math co-processor) 80286 (16-bit processor) produced in 1982 ■ ■ 80386 (32-bit processor) produced in 1985 ■ ■ Trang 580486 (32-bit processor) produced in 1989.■ ■ Pentium (32-bit processor) produced ... addresses used to uniquely identify comput-ers on TCP/IP networks Using DNS, a number like 207.46.250.222 can be translated to a friendly domain name such as microsoft.com In 1984, DNS became part ... later) Web servers for the Internet Linus Torvalds used UNIX as the basis for developing Linux 20 years later Linux is open source, mean-ing that the code is available to use for free, and is the

Ngày tải lên: 04/07/2014, 13:20

... that it is scalable As the net-work grows or changes, computers FIGurE 1.4 A Star Topology. Trang 2are simply added or removed from the hub Unfortunately, because there is so much cabling that is ... of a WAN, and how could it be applied to this 1 network? What topology does the Paris firm use? 2 What topology does the Freedom Fry Corporation use? 3 On both networks, which networking component ... con-nection between the two offices The Paris firm uses a star topology, which has computers of the 2 network all connected to a single hub The Freedom Fry Corporation uses a wireless topology in

Ngày tải lên: 04/07/2014, 13:20

... home network that consists of one computer Q: running an Apple iMac and another running Windows 2000 Professional Each of them has network adapters installed already I want to network them together, ... Network card C T-Connector D Hub SElF TEST quICK ANSwEr KEy B 1 C 2 A 3 A 4 B 5 B 6 C 7 C 8 C 9 A and D 10 A 11 D 12 C 13 C 14 D 15 Trang 10ExAM oBJECTIvES IN ThIS ChApTEr INTroduCTIoN ... hub (which is cheaper than a router) using network cabling Being that security isn’t an issue, P2P networks are ideal in these situations My company wants to connect the LANs of an office in one

Ngày tải lên: 04/07/2014, 13:20

... thin (10Base2) or thick (10Base5) are two examples. The thin and thick kinds of coaxial cabling refer to the thickness of the cable. 10Base2 cabling, also known as Thinnet, is 0.25 in. while ... doesn’t suffer from the same problems. Although Table 2.2 Maximum Distance of Physical Media Media Standard Cable Type Maximum Length 10Base2 Coax 185 m 10Base5 Coax 500 m 10BaseT UTP or STP (Category ... varies depending on the media being used. Table 2.1 Bandwidth Capacity of Physical Media Media Standard Cable Type Bandwidth Capacity 10Base2 Coax 10 Mbps 10Base5 Coax 10 Mbps 10BaseT UTP or

Ngày tải lên: 04/07/2014, 13:20

... www.10gea.org. Trang 7ChApTEr 2: Network Media 72 10Base2, 10Base5, and Arcnet 10Base2 (also known as Thinnet) is a thin coaxial cable used on Ethernet net-works The cable used in 10Base2 is an RG-58 cable ... of 26 m and 82 m depending on the cable type It also supports distances of 300 m over a new 2000 MHz km MMF. 10GBaseLX4 that uses wavelength division mul-■ tiplexing and supports ranges of 240 ... drilled Table 2.3 Four-Pair Cable Color Code pair Solid wire Striped wire Table 2.4 Twisted-Pair Wire/Pin Placement pin wire 1 Orange and white 3 Green and white 7 Brown and white Trang 2or vertical

Ngày tải lên: 04/07/2014, 13:20

... cabling? Trang 10A 100 mB 185 m C 500 m D 2 km Examine the illustration shown in Figure 2.12 is a 10Base2 network, and it uses these connectors to attach to the network Which of the following ... cabling in each of the buildings, and connect the two buildings together using 10Base2 cabling FIGurE 2.12 ... up to 2 km in length 100BaseFX uses fiber-optic cabling to transmit data at speeds of ■ ■ 100 Mbps across cable segments that are up to 400 m in length with half-duplex communication or 2 km for

Ngày tải lên: 04/07/2014, 13:21

... in such a network? (Choose one.) FIGurE 2.13 Trang 2Self Test 97A RJ-11 B RG 58 C SC D BNC As a Network technician for 123 LLC, you are asked by your 12 CIO about the access method of Gigabit ... cable D A hardware loopback Trang 3ChApTEr 2: Network Media 98 SElF TEST quICK ANSwEr KEy B 1 A 2 B 3 D 4 B 5 B 6 D 7 C 8 C 9 A 10 C 11 B 12 C 13 C 14 D 15 Trang 4ChApTEr 3 ExAM ... hubs provide 24 or 28 ports and can be attached together (or more commonly referred to as uplinked FIGurE 3.1 Hubs Are Used in Star Topologies. Trang 7ChApTEr 3: Network Devices 102 or cascaded

Ngày tải lên: 04/07/2014, 13:21

... defined in RFC 1918. The private IP address ranges are 10.0.0.0–10 .25 5 .25 5 .25 5, 1 72. 16.0.0–1 72. 31 .25 5 .25 5, and 1 92. 168.0.0–1 92. 168 .25 5 .25 5. These ranges of IP addresses are defined by default on routers ... Layer 2 Forwarding (L2F)  Layer 2 Tunneling Protocol (L2TP)  Point-to-Point Tunneling Protocol (PPTP)  Integrated Services Digital Network (ISDN) 4335.book Page 60 Wednesday, June 9, 20 04 ... standards such as the following:  EIA/TIA -23 2 and EIA/TIA-449  X .21  High-Speed Serial Interface (HSSI)  Synchronous Optical Network (SONET)  V .24 and V.35 Through the device drivers...

Ngày tải lên: 14/08/2014, 18:20