CompTIA Network+ Certification Study Guide part 71 pptx

... locations appear to be part of the same local area network. In doing so, broadcast messages can be sent to all computers and devices that are part of the same VLAN, because they are part of the same ... locations appear to be part of the same local area network. In doing so, broadcast messages can be sent to all com- puters and devices that are part of the same VLAN because they...

Ngày tải lên: 04/07/2014, 13:21

... companies expand and spread into different locations, it became difficult to have people in the same departments on the same LAN segments. Someone envisioned being able to reconfigure one physical device ... words, when a computer is FIGURE 1.3 A Bus Topology. Exam Warning One of the testable items on the Network+ exam is being able to identify a topology based on either the description...

Ngày tải lên: 04/07/2014, 13:20

... more expensive than UTP. DAMAGE AND DEFENSE… Physical Security Physical security is an important part of any network. In terms of cabling, you should try to keep as much cabling as possible out ... can send a thousand times this amount. As we’ll see later in this chapter, the features of a particular type of cable can vary greatly. Because different types of cabling are available to use...

Ngày tải lên: 04/07/2014, 13:20

... installing several runs of cable at a time, you don’t want to be confused as to which cable runs to a particular computer or location. By labeling the cables, this confusion is removed, and you’ll ... 10Base5 cable can have no more than 100 taps per cable 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...

Ngày tải lên: 04/07/2014, 13:20

... clients and visitors to Web sites, a company may stipulate whether information is sold to third parties that may send you advertisements, spam, or phone solicitations.

Ngày tải lên: 04/07/2014, 13:21

... 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 ... 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 us...

Ngày tải lên: 04/07/2014, 13:21

... source addresses for any traffic. Although multicast addresses can be associated with particular interfaces on particular devices (such as 224.0.0.5 for Open Shortest Path First- enabled Private ... IGMP allows host computers on the Internet to participate in IP multicasting. A multicast address identifies a transmission session instead of a particular physical destination. This allows for...

Ngày tải lên: 04/07/2014, 13:21

... issues dealing with the network. After work and on weekends, however, the members of the IT department may rotate the duty of being on-call, so that a different member of the staff is responsible ... their maiden name changed to their married name on a system, or someone being unable to find a particular Web page on the corporate intranet). Network Monitoring 499 Dropped packets – Routers...

Ngày tải lên: 04/07/2014, 13:21

... be related to the computer itself. If it is affecting all computers on a particular subnet or those connected to a particular hub or switch, you can use this information to help you in the ... like a network cable, or a logical component like the Internet Protocol (IP) configuration for a particular network interface card (NIC). You’ll use the information you gather to determine which

Ngày tải lên: 04/07/2014, 13:21

... one of your company’s employees needs to access the FTP site of one of your company’s business partners, ftp.airplanes.com, to download large PDF files containing prod- uct marketing information. ... Mask: 255.255.0.0 B. Default Gateway: 172.16.0.1 C. DNS Servers: 172.16.0.100 D. 172.16.0.101 As part of a recent network redesign, you had to change the default gate- way used by your clie...

Ngày tải lên: 04/07/2014, 13:21