Network+ 2005 In Depth (P1) pot

... remain one of the fastest growing indus- tries in the U.S. economy, despite recent job losses. In any industry, the workforce is important to continually drive business. Having skilled workers in ... in the networking industry, including those that oversee wiring codes, net- work access methods, and Internet addressing. It also discusses, in depth, the OSI Model, which is the indus...

Ngày tải lên: 07/07/2014, 09:20

... learn by doing. Many colleges offer courses or continuing education on networking topics. You may also want to enroll at a computer training center. These train- ing centers can be found in every ... area and in many small towns. If you are pur- suing certification, be certain the training center you choose is authorized to provide training for that certification. Most computer training c...

Ngày tải lên: 07/07/2014, 09:20

... You will use this information when installing network operating systems, configuring servers and client workstations, installing NICs, troubleshooting network problems, and purchasing net- work equipment. IEEE ... Engineers)—An international society com- posed of engineering professionals. Its goals are to promote development and education in the electrical engineering and computer science...

Ngày tải lên: 07/07/2014, 09:20

... new infrastructure versus reusing existing infrastructure—Can you use existing wiring? In some cases, for example, installing all new Category 7 UTP wiring may not pay off if you can use existing ... affecting productivity—If you save money by reusing existing slower lines, are you incurring costs by reducing productivity? In other words, are you making staff wait longer to save and print...

Ngày tải lên: 07/07/2014, 09:20

... divided into a few cubicles. In general, stations must remain within 300 feet of an access point to maintain optimal transmission speeds. In addition to connecting multiple nodes within a LAN, ... explains how to install this type of cabling from the server to the desktop. Installing Cable So far, you have read about the variety of cables used in networking and the limitations inher- en...

Ngày tải lên: 07/07/2014, 09:20

... transmission occurs on a point-to-point basis, multi- casting is a point-to-multipoint method. Multicasting can be used for teleconferencing or videoconferencing over the Internet, for example. Routers ... continuous waves, resulting in an inexact transmission. 122 Chapter 3 TRANSMISSION BASICS AND NETWORKING MEDIA Suppose the segment in Figure 4-2 was sent from Computer B to Computer A....

Ngày tải lên: 07/07/2014, 09:20

... the TCP/IP host name. TIP WINS (Windows Internet Naming Service) WINS (Windows Internet Naming Service) provides a means of resolving NetBIOS names to IP addresses. WINS is used exclusively with ... running correctly. Next, you might try pinging your neighbor’s machine. If you receive a positive response, you know that your network connection is working. You should then try pinging a machine...

Ngày tải lên: 07/07/2014, 09:20

... blinking, this LED indicates that the NIC is either transmitting or receiv- ing data (in other words, experiencing activity) on the network. If steady, it indicates that the NIC is experiencing ... chapter. Physically installing a PCMCIA-standard NIC is much easier than installing an expansion card NIC. In general, you can simply turn off the machine, insert the card into the PCMCIA slot,...

Ngày tải lên: 07/07/2014, 09:20

... networks within networks, by grouping a number of ports into a broadcast domain. A broadcast domain is a combination of ports that make up a Layer 2 seg- ment. Ports in a broadcast domain rely on ... them. In contrast to a collision domain, ports in the same broadcast domain do not share a single channel. (Recall that switches separate collision domains.) In the context of TCP/IP netw...

Ngày tải lên: 07/07/2014, 09:20

... Token Ring network by connecting multiple MAUs through their Ring In and Ring Out ports, as shown in Figure 6-14. Unused ports on a MAU, including Ring In and Ring Out ports, have self-shorting ... switching: circuit switching, message switching, and packet switching. Circuit Switching In circuit switching, a connection is established between two network nodes before they begin transm...

Ngày tải lên: 07/07/2014, 09:20

... LANs and WANs and describes in detail WAN transmission media and methods. It also notes the potential pitfalls in establish- ing and maintaining WANs. In addition, it introduces you to remote connectivity ... are invalid. After waiting, the NIC determines if the line is again available; if it is avail- able, the NIC retransmits its data. daisy chain—A group of connectivity devices linke...

Ngày tải lên: 07/07/2014, 09:20

... keep the signal intelligible. In the 1970s, many busi- nesses installed T1s to obtain more voice throughput per line. In the 1990s, with increased NET+ 2.14 NET+ 2.14 ◆ Choose infrastructure mode ... while allowing patrons within the access point’s range to log on to the Internet, as shown in Figure 7-20. At T-Mobile hot spots, access points are connected (via routers) to T1 links. 322...

Ngày tải lên: 07/07/2014, 09:20

... workgroups or domains. During installation you will be asked whether the server should join an existing workgroup, be a new workgroup server, or join an existing domain. As you learned, in a workgroup ... principal name) —The preferred naming convention for users in e-mail and related Internet services. A user’s UPN looks like a familiar Internet address, including the positioning of the...

Ngày tải lên: 07/07/2014, 09:20

... area. ◆ Line conditioning—A UPS should also offer surge suppression to protect against surges and line conditioning, or filtering, to guard against line noise. Line condition- ers and UPS units include ... concept of disk duplexing is related to disk mirroring. In disk duplexing, data is contin- ually copied from one disk to another when it is saved, just as in disk mirroring. In duplex...

Ngày tải lên: 07/07/2014, 09:20

... a network. In addition to sending, receiving, and storing mail, mail services can include filtering, routing, notification, scheduling, and data exchange with other mail servers. main bus—See ... display TCP/IP addressing and domain name information in the Windows NT, Windows 2000, and Windows XP operating systems. IPng—See IPv6. IP-PBX—A private switch that accepts and interprets both an...

Ngày tải lên: 07/07/2014, 09:20