comptia network 2009 in depth by tamara dean pdf

... standards 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 industry ... accessing networks from remote locations, including dial-up network- ing and VPNs (virtual private networks). Chapter 8, Network Operating Systems and Windows Server 2003-Based Networking,” covers ... 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...

Ngày tải lên: 07/07/2014, 09:20

... protocols, topologies, networking hardware, and network troubleshooting. network interface card—See NIC. network operating system—See NOS. network services—The functions provided by a network. NIC (network interface ... easily by a single network administrator and the network operating system’s internal functions. For instance, suppose a user called to report a problem logging on to the network. The administrator ... 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...

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 ... used in token-passing networks like Advisory Group FDDI 802.9 Integrated Voice/ Integration of voice and data traffic over a single network Data Networks medium 802.10 Network Security Network ... equipment. IEEE Networking Specifications In addition to frame types and addressing, IEEE networking specifications apply to connec- tivity, networking media, error checking algorithms, encryption, emerging...

Ngày tải lên: 07/07/2014, 09:20

... 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 reports ... 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 ... affect the cost of installing and maintaining the network, the ease of adding new segments or nodes to the network, and the technical exper- tise required to maintain the network. The connectors...

Ngày tải lên: 07/07/2014, 09:20

... 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- ent in ... 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, ... cables were improperly installed. This section outlines the most common method of installing UTP cable and points out cabling mistakes that can lead to network instability. In the previous section,...

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 ... nearby wire pairs infringing on another pair’s signal. demarcation point (demarc)—The point of division between a telecommunications service carrier’s network and a building’s internal network. demultiplexer ... rule—A guideline for 10-Mbps Ethernet networks stating that between two communi- cating nodes, the network cannot contain more than five network segments connected by four repeating devices,...

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 ... command may vary depending on the operating system. But a ping command always begins with the word “ping” followed by a hyphen (-) and a switch, fol- lowed by a variable pertaining to that switch....

Ngày tải lên: 07/07/2014, 09:20

... Device heading. Click Apply to install the drivers and configure network settings for the new NIC. Interpreting LED Indicators After you have installed a NIC, you can test it by attempting to transmit ... 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 ... a 10BASE-T network) . ◆ TX—If blinking, this LED indicates that the NIC is functional and transmitting frames to the network. ◆ RX—If blinking, this LED indicates that the NIC is functional and receiving...

Ngày tải lên: 07/07/2014, 09:20

... are finding niches in specialized applications such as linking large Internet nodes or completing digitized telephone calls. The concept of routing, and everything described in the remainder ... routing loops from continuing indefinitely by limiting the number of hops a packet can take between its source and its destination to 15. If the number of hops in a path exceeds 15, the network ... routing, by default, when a router is added to a network, routing protocols update its routing tables. Most networks primarily use dynamic routing, but may include some static routing to indicate,...

Ngày tải lên: 07/07/2014, 09:20

... for token passing. Specifically, the active monitor maintains the timing for ring passing, monitors Chapter 6 265 TOKEN RING NET+ 1.2 Backbone Networks A network backbone is the cabling that connects ... because of its higher cost and lagging speed. Token Ring networks use the token-passing routine and a star-ring hybrid physical topology. In token passing, a 3-byte packet, called a token, is transmitted ... in the following sections. Serial Backbone A serial backbone is the simplest kind of backbone. It consists of two or more internetwork- ing devices connected to each other by a single cable in...

Ngày tải lên: 07/07/2014, 09:20

... FDDI (Fiber Distributed Data Interface) is a networking standard originally speci- fied by ANSI in the mid-1980s and later refined by ISO. It uses a dual fiber-optic ring to transmit data at speeds ... that consists of two or more internetworking devices connected to each other by a single cable in a daisy-chain fashion. Hubs are often connected in this way to extend a network. Service Set Identifier—See ... (Fiber Distributed Data Interface)—A networking standard originally specified by ANSI in the mid-1980s and later refined by ISO. FDDI uses a dual fiber-optic ring to trans- mit data at speeds of...

Ngày tải lên: 07/07/2014, 09:20

... dedicated lines. ISDN ISDN (Integrated Services Digital Network) is an international standard, originally estab- lished by the ITU in 1984, for transmitting digital data over the PSTN. In North ... conform to a timing scheme. A clock maintains time for all nodes on a network. A receiving node in synchronous commu- nications recognizes that it should be receiving data by looking at the time ... particular SONET ring is indicated by its OC (Optical Carrier) level, a rating that is internationally recognized by networking professionals and standards organiza- tions. OC levels in SONET are...

Ngày tải lên: 07/07/2014, 09:20

... for Network+ certification, you must understand the inner work- ings of network operating systems in general. In addition, you must be familiar with the major network operating systems: Windows ... would be to use terminal services, as described in the following section. Terminal Services A popular method for gaining remote access to LANs is by using terminal services. In termi- nal services, ... PVC. plain old telephone service (POTS)—See PSTN. Point-to-Point Protocol—See PPP. Point-to-Point Protocol over Ethernet—See PPPoE. Point-to-Point Tunneling Protocol—See PPTP. POTS—See PSTN. PPP (Point-to-Point...

Ngày tải lên: 07/07/2014, 09:20

... process of installing, main- taining, or optimizing Windows Server 2003 networks. For this in- depth knowledge (and par- ticularly if you plan to pursue MCSE certification), you should invest in books ... domains for each of the following colleges: Life Sciences, Humanities, Communications, and Engineering. Within the Engineering domain, additional domains such as “Chemical Engineering,” “Indus- trial ... Active Directory. Naming Conventions In the preceding section, you learned to think about domains in terms of their hierarchical rela- tionships. Getting to know the structure of a network by studying its domain...

Ngày tải lên: 07/07/2014, 09:20

... learn about installing the NOS. Planning for Installation When installing and configuring an NOS, you must create a plan for your server and its place in your network before you insert the installation ... that in case one of the domain controllers fails, clients can still log on to the network, be authenticated, and access resources. root domain In Windows Server 2003 networking, the single domain ... resources within a single domain also. However, a global group usually contains user accounts and can be inserted (or nested) into a domain local group to gain access to resources in other domains. A...

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20