CompTIA Network+ Certification Study Guide part 3 ppt

... It isn’t until 19 83 that IBM releases the XT with the 8086 processor (and option to add an 8087 math co-processor).80286 (16-bit processor) produced in 1982.8 038 6 (32 -bit processor) produced ... more than 30 0 vacuum tubes and approximately one mile of wire. Because the war prevented them from completing a patent on their computer, the computer was dismantled when the physics department ... to a friendly domain name such as microsoft.com. In 1984, DNS became part of ARPANet, and would eventually play a major part resolving domain names on the Internet.Also during the mid-1980s,...

CompTIA Network+ Certification Study Guide part 4 pptx

... pro-tocols to be used. Common protocols associated with VPN transmission security are PPTP, L2TP, SSH, and IPSec.PPTP and L2TP are used to establish a secure tunnel connection between two sites. ... passive topology. In other words, when a computer is FIGURE 1 .3 A Bus Topology.Exam WarningOne of the testable items on the Network+ exam is being able to identify a topology based on either ... traveling over. Encapsulating Protocol The protocol, such as Point-to-Point Tun-neling Protocol (PPTP), Layer 2 Tunneling Protocol (L2TP), IPSec, or Secure Shell (SSH), that is wrapped around...

CompTIA Network+ Certification Study Guide part 6 ppt

... get?T3 lines are the fastest, but they are also the most expensive. T1 A:and T3 lines are thousands of dollars a month, and may be more than your organization needs. Before deciding on a particular ... 46MEDIA ISSUES 49CABLE TESTERS AND TROUBLESHOOTING 58SIMPLEX, HALF-DUPLEX, AND FULL-DUPLEX 63 CABLING 63 CABLE MANAGEMENT 67 LAN TECHNOLOGIES AND STANDARDS 69CONNECTORS 75OTHER MEDIA 85INTRODUCTIONIn ... connection will you choose in connecting these networks?A. Dial-up modemB. ISDNC. T1D. T3A company has several ofﬁces that are networked together across 10. the city. Each of the sales...

CompTIA Network+ Certification Study Guide part 7 pptx

... to as a bit, and 8 bits of data make a byte. A word is considered 4 bytes, which is essentially 32 bits … the same length as an IP (Internet Protocol) address, which we will learn about in Chapter ... Type Bandwidth Capacity10Base2 Coax 10 Mbps10Base5 Coax 10 Mbps10BaseT UTP or STP (Category 3 or higher) 10 Mbps100BaseTX UTP or STP (Category 5 or higher) 100 Mbps10BaseFL Fiber-optic 10 ... more expensive than UTP.DAMAGE AND DEFENSE…Physical SecurityPhysical security is an important part of any network. In terms of cabling, you should try to keep as much cabling as possible out...

CompTIA Network+ Certification Study Guide part 9 pptx

... segment, with each tap spaced 2 1/2 m apart.Determining how long a 10Base5 cable could be lengthened using dif-ferent segments can be calculated using the 5-4 -3 rule. A 10Base5 cable can have up ... type. It also supports distances of 30 0 m over a new 2000 MHz km MMF.10GBaseLX4 that uses wavelength division mul- tiplexing and supports ranges of 240 m and 30 0 m over MMF, or 10 km over single-mode ... holes that may have to be drilled Table 2 .3 Four-Pair Cable Color CodePair Solid Wire Striped Wire1 Blue Blue and white2 Orange Orange and white 3 Green Green and white4 Brown Brown and whiteTable...

CompTIA Network+ Certification Study Guide part 14 ppt

... Table 3. 3 shows an example of what is contained in the routing table.CHAPTER 3: Network Devices 120FIGURE 3. 5Enabling a Connection with Windows XP Professional.Note that in Figure 3. 4, ... Table 3. 3Information Contained in a Routing TableDestination Adjacent Router HopsNetwork 1 Router A 1Network 1 Router B 2Network 2 Router B 2Network 2 Router C 3 Network 3 Router D 3 CHAPTER ... (Figure 3. 4).FIGURE 3. 4Viewing Your Network Connections.Network Devices 117needed, a company could also lease another level of a T-carrier line called a T3 line, which provides speeds of 44. 736 ...

CompTIA Network+ Certification Study Guide part 15 pptx

... security. First, by adding a link internally, you FIGURE 3. 7A Screened Host Firewall.FIGURE 3. 6A Dual-Homed Host Firewall.Network Devices 133 examined by outsiders. In other words, all trafﬁc ... conﬁgured with identical protocols and settings.FIGURE 3. 11 A Site-to-Site VPN Established Between Two Remote Ofﬁces.CHAPTER 3: Network Devices 130 The creation of these DMZ segments is usually done ... sec-tion), a safe connection is being created between two points that cannot be CHAPTER 3: Network Devices 134 to maintain. However, hardware implementations are considered more secure, because...

CompTIA Network+ Certification Study Guide part 23 pptx

... large number of active attacks that a hacker can launch against a wireless network. For the most part, these attacks are identical to the kinds of active attacks that are encountered on wired ... doing regular wireless site surveys to see if someone has Common Exploits of Wireless Networks 2 13 violated your company security policy by placing an unauthorized AP on the network, regardless ... attack.Creating a hijacked AP DoS requires additional tools that can be found on many security sites.Many apartments and older ofﬁce buildings are not prewired for the high-tech networks in use today. To...

CompTIA Network+ Certification Study Guide part 29 ppt

... POP3 uses port 110 for communication.Exam WarningRemember that IMAP4 uses Port 1 43 (both TCP and UDP) for communication.CHAPTER 6: The OSI Model and Networking Protocols 274forwarded to a particular ... following for the Network exam:The name service uses UDP Port 137 The datagram service uses UDP Port 138 The session service uses TCP Port 139 Networking Protocols 269in Berkeley, and Microsoft developed ... WarningRemember that NTP uses port 1 23 for communication. Do not confuse this with NNTP, which uses port 119.Exam WarningRemember that DNS uses port 53 for communication.CHAPTER 6: The OSI...

CompTIA Network+ Certification Study Guide part 31 ppt

... each hop, a router decrements (reduces) this FIGURE 7.2 The IPv4 Header.Bits4481616 3 13 8168 32 32 0 – 40VariableVersionHeader LengthTOS (Type or Class of Service)Total LengthIdentificationFlagsFragment ... IPv6 2 93 Feature ComparisonThe IPv6 architecture contains integrated features that are not contained in IPv4. Table 7 .3 contrasts the features of IPv4 and IPv6.Table 7 .3 IPv4 and IPv6 ... IPv4 address, expressed as a dotted decimal address, is:10.11.12. 13 It is much easier to remember an IP address of 10.11.12. 13 than to remember a string of bits such as 00001010000010110000110000001101....

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