The document discusses different types of cables used for computer networking, including unshielded twisted pair (UTP), shielded twisted pair (STP), coaxial, and fiber optic cables. It describes the characteristics of each cable type and their uses. UTP is the most commonly used and comes in categories to support different transmission speeds. The document also briefly discusses wireless networking and provides guidelines for installing network cables.
Ethernet cables are ubiquitous. Routers, modems, gaming consoles, entertainment devices- all use Ethernet cable to connect to the internet. You most probably already know what an Ethernet cable is and how it looks. However, do you know there are various types?
Fibre Optic Cabling Or Copper Data Cabling – Which Should You Choose?
What are the advantages and disadvantages of fibre optic cable?
What are the advantages and disadvantages of copper cable?
Data cables provide the medium to make connections between devices in modern fixed telecommunications networks. Physically, data cables are transmission lines that carry information in the form of electromagnetic signals from one node in a network to another, where the information needs to be demodulated, stored, forwarded, retrieved, processed, and/or interpreted. An important challenge in the networked world is to figure out which data cables best solve the data transfer problems at hand.
The presentation examines three common data cable formats: Twisted-pair wires, optical fibres, and coaxial cables. We will examine the physical and information-carrying properties of each cable type, practical installation and use considerations, and the conditions under which application of a given cable type is most appropriate. A very basic understanding of telecommunications concepts such as bandwidth, signal-to-noise ratio, and modulation is helpful, but not necessary, to follow the presentation.
Ethernet cables are ubiquitous. Routers, modems, gaming consoles, entertainment devices- all use Ethernet cable to connect to the internet. You most probably already know what an Ethernet cable is and how it looks. However, do you know there are various types?
Fibre Optic Cabling Or Copper Data Cabling – Which Should You Choose?
What are the advantages and disadvantages of fibre optic cable?
What are the advantages and disadvantages of copper cable?
Data cables provide the medium to make connections between devices in modern fixed telecommunications networks. Physically, data cables are transmission lines that carry information in the form of electromagnetic signals from one node in a network to another, where the information needs to be demodulated, stored, forwarded, retrieved, processed, and/or interpreted. An important challenge in the networked world is to figure out which data cables best solve the data transfer problems at hand.
The presentation examines three common data cable formats: Twisted-pair wires, optical fibres, and coaxial cables. We will examine the physical and information-carrying properties of each cable type, practical installation and use considerations, and the conditions under which application of a given cable type is most appropriate. A very basic understanding of telecommunications concepts such as bandwidth, signal-to-noise ratio, and modulation is helpful, but not necessary, to follow the presentation.
http://www.whatisnetworking.net/how-to-connect-networking-cables/
Cable is the intermediate during which information typically shifts from one arrangement device to further.
Networking Cable is the medium through which information usually moves from one network device to
another. There are several types of cable which are commonly used with LANs. In some cases, a network
will utilize only one type of cable, other networks will use a variety of cable types. The type of cable
chosen for a network is related to the network's topology, protocol, and size. Understanding the
characteristics of different types of cable and how they relate to other aspects of a network is necessary
for the development of a successful network.
Overview of SFP+ Direct Attach Copper CableJo Wang
SFP+ direct attach copper cable assembly is a high speed and cost-effective alternative to fiber optic cables in 10G Ethernet applications. 10g copper SFP is suitable for short distances, and ideal for highly cost-effective networking connectivity within a rack and between adjacent racks. It enables hardware OEMs and data center operators to achieve high port density and configurability at a low cost and reduced power requirement. SFP+ direct attach copper cable has been a good solution. This post will provide you with some basic information about SFP+ direct attach copper cable.
CAT5E cables are used to connect networks environment either to a computer, router, and switch for transfer data. Cat5e patch cables present exceptionally high-speed network performance and gigabit speeds of 250MHZ - making it the best selection for users.
Structured Cabling
Cabling system that allows constant moves and changes to be performed by on site personnel
Growth and flexibility built into the cabling scheme
Can be either proprietary (closed) or non proprietary (open)
What is Network Cabling?
Cable is the medium through which information usually moves from one network device to another.
There are several types of cable which are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network's topology, protocol, and size.
http://www.whatisnetworking.net/how-to-connect-networking-cables/
Cable is the intermediate during which information typically shifts from one arrangement device to further.
Networking Cable is the medium through which information usually moves from one network device to
another. There are several types of cable which are commonly used with LANs. In some cases, a network
will utilize only one type of cable, other networks will use a variety of cable types. The type of cable
chosen for a network is related to the network's topology, protocol, and size. Understanding the
characteristics of different types of cable and how they relate to other aspects of a network is necessary
for the development of a successful network.
Overview of SFP+ Direct Attach Copper CableJo Wang
SFP+ direct attach copper cable assembly is a high speed and cost-effective alternative to fiber optic cables in 10G Ethernet applications. 10g copper SFP is suitable for short distances, and ideal for highly cost-effective networking connectivity within a rack and between adjacent racks. It enables hardware OEMs and data center operators to achieve high port density and configurability at a low cost and reduced power requirement. SFP+ direct attach copper cable has been a good solution. This post will provide you with some basic information about SFP+ direct attach copper cable.
CAT5E cables are used to connect networks environment either to a computer, router, and switch for transfer data. Cat5e patch cables present exceptionally high-speed network performance and gigabit speeds of 250MHZ - making it the best selection for users.
Structured Cabling
Cabling system that allows constant moves and changes to be performed by on site personnel
Growth and flexibility built into the cabling scheme
Can be either proprietary (closed) or non proprietary (open)
What is Network Cabling?
Cable is the medium through which information usually moves from one network device to another.
There are several types of cable which are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network's topology, protocol, and size.
This PDF of connectors and cable types is a comprehensive resource that explains the different types of connectors and cables used in various network cabling systems. It provides information on various connector types, such as USB, Ethernet, and VGA, as well as different types of cables, such as coaxial, fiber optic, and twisted pair. Read now!
This is a notes about Cables & Connectors of computer networks. It contain details about the information of different types of cables- twisted pair cable, coaxial cable, fiber optical cable, crossover cable , straight through cable, STP/UTP cables & about their connectors.
This note is about Cables & Connectors of computer networks. It contains detailed information on different types of cables- Coaxial Cable, Twisted Pair Cable, and Fiber Optic Cable.
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1. FAKULTI PENGURUSAN MAKLUMAT
NETWORK CABLING
IMD 251 SUPPORT SERVICES AND MAINTENANCE II
ISMA ISHAK
2009
2. NETWORK CABLING
Cable is the medium through which information usually moves from one network device to
another. There are several types of cable which are commonly used with LANs. In some
cases, a network will utilize only one type of cable, other networks will use a variety of cable
types. The type of cable chosen for a network is related to the network's topology, protocol,
and size. Understanding the characteristics of different types of cable and how they relate to
other aspects of a network is necessary for the development of a successful network.
The following sections discuss the types of cables used in networks and other related topics.
• Unshielded Twisted Pair (UTP) Cable
• Shielded Twisted Pair (STP) Cable
• Coaxial Cable
• Fiber Optic Cable
• Wireless LANs
• Cable Installation Guides
Unshielded Twisted Pair (UTP) Cable
Twisted pair cabling comes in two varieties: shielded and unshielded. Unshielded twisted
pair (UTP) is the most popular and is generally the best option for school networks (See fig.
1).
Fig.1. Unshielded twisted pair
The quality of UTP may vary from telephone-grade wire to extremely high-speed cable. The
cable has four pairs of wires inside the jacket. Each pair is twisted with a different number
of twists per inch to help eliminate interference from adjacent pairs and other electrical
devices. The tighter the twisting, the higher the supported transmission rate and the greater
the cost per foot. The EIA/TIA (Electronic Industry Association/Telecommunication Industry
Association) has established standards of UTP and rated five categories of wire.
Categories of Unshielded Twisted Pair
Type Use
Category 1 Voice Only (Telephone Wire)
Category 2 Data to 4 Mbps (LocalTalk)
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3. Category 3 Data to 10 Mbps (Ethernet)
Category 4 Data to 20 Mbps (16 Mbps Token Ring)
Category 5 Data to 100 Mbps (Fast Ethernet)
Buy the best cable you can afford; most schools purchase Category 3 or Category 5. If you
are designing a 10 Mbps Ethernet network and are considering the cost savings of buying
Category 3 wire instead of Category 5, remember that the Category 5 cable will provide
more quot;room to growquot; as transmission technologies increase. Both Category 3 and Category
5 UTP have a maximum segment length of 100 meters. In Florida, Category 5 cable is
required for retrofit grants. 10BaseT refers to the specifications for unshielded twisted pair
cable (Category 3, 4, or 5) carrying Ethernet signals. Category 6 is relatively new and is
used for gigabit connections.
Unshielded Twisted Pair Connector
The standard connector for unshielded twisted pair cabling is an RJ-45 connector. This is a
plastic connector that looks like a large telephone-style connector (See fig. 2). A slot allows
the RJ-45 to be inserted only one way. RJ stands for Registered Jack, implying that the
connector follows a standard borrowed from the telephone industry. This standard
designates which wire goes with each pin inside the connector.
Fig. 2. RJ-45 connector
Shielded Twisted Pair (STP) Cable
A disadvantage of UTP is that it may be susceptible to radio and electrical frequency
interference. Shielded twisted pair (STP) is suitable for environments with electrical
interference; however, the extra shielding can make the cables quite bulky. Shielded
twisted pair is often used on networks using Token Ring topology.
Coaxial Cable
Coaxial cabling has a single copper conductor at its center. A plastic layer provides
insulation between the center conductor and a braided metal shield (See fig. 3). The metal
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4. shield helps to block any outside interference from fluorescent lights, motors, and other
computers.
Fig. 3. Coaxial cable
Although coaxial cabling is difficult to install, it is highly resistant to signal interference. In
addition, it can support greater cable lengths between network devices than twisted pair
cable. The two types of coaxial cabling are thick coaxial and thin coaxial.
Thin coaxial cable is also referred to as thinnet. 10Base2 refers to the specifications for thin
coaxial cable carrying Ethernet signals. The 2 refers to the approximate maximum segment
length being 200 meters. In actual fact the maximum segment length is 185 meters. Thin
coaxial cable is popular in school networks, especially linear bus networks.
Thick coaxial cable is also referred to as thicknet. 10Base5 refers to the specifications for
thick coaxial cable carrying Ethernet signals. The 5 refers to the maximum segment length
being 500 meters. Thick coaxial cable has an extra protective plastic cover that helps keep
moisture away from the center conductor. This makes thick coaxial a great choice when
running longer lengths in a linear bus network. One disadvantage of thick coaxial is that it
does not bend easily and is difficult to install.
Coaxial Cable Connectors
The most common type of connector used with coaxial cables is the Bayone-Neill-
Concelman (BNC) connector (See fig. 4). Different types of adapters are available for BNC
connectors, including a T-connector, barrel connector, and terminator. Connectors on the
cable are the weakest points in any network. To help avoid problems with your network,
always use the BNC connectors that crimp, rather than screw, onto the cable.
Fig. 4. BNC connector
Fiber Optic Cable
Fiber optic cabling consists of a center glass core surrounded by several layers of protective
materials (See fig. 5). It transmits light rather than electronic signals eliminating the
problem of electrical interference. This makes it ideal for certain environments that contain
a large amount of electrical interference. It has also made it the standard for connecting
networks between buildings, due to its immunity to the effects of moisture and lighting.
Fiber optic cable has the ability to transmit signals over much longer distances than coaxial
and twisted pair. It also has the capability to carry information at vastly greater speeds.
3 | P a g e
5. This capacity broadens communication possibilities to include services such as video
conferencing and interactive services. The cost of fiber optic cabling is comparable to copper
cabling; however, it is more difficult to install and modify. 10BaseF refers to the
specifications for fiber optic cable carrying Ethernet signals.
Fig.5. Fiber optic cable
Facts about fiber optic cables:
• Outer insulating jacket is made of Teflon or PVC.
• Kevlar fiber helps to strengthen the cable and prevent breakage.
• A plastic coating is used to cushion the fiber center.
• Center (core) is made of glass or plastic fibers.
Fiber Optic Connector
The most common connector used with fiber optic cable is an ST connector. It is barrel
shaped, similar to a BNC connector. A newer connector, the SC, is becoming more popular.
It has a squared face and is easier to connect in a confined space.
Ethernet Cable Summary
Specification Cable Type Maximum length
10BaseT Unshielded Twisted Pair 100 meters
10Base2 Thin Coaxial 185 meters
10Base5 Thick Coaxial 500 meters
10BaseF Fiber Optic 2000 meters
100BaseT Unshielded Twisted Pair 100 meters
100BaseTX Unshielded Twisted Pair 220 meters
4 | P a g e
6. Wireless LANs
Not all networks are connected with cabling; some networks are wireless. Wireless LANs use
high frequency radio signals, infrared light beams, or lasers to communicate between the
workstations and the file server or hubs. Each workstation and file server on a wireless
network has some sort of transceiver/antenna to send and receive the data. Information is
relayed between transceivers as if they were physically connected. For longer distance,
wireless communications can also take place through cellular telephone technology,
microwave transmission, or by satellite.
Wireless networks are great for allowing laptop computers or remote computers to connect
to the LAN. Wireless networks are also beneficial in older buildings where it may be difficult
or impossible to install cables.
The two most common types of infrared communications used in schools are line-of-sight
and scattered broadcast. Line-of-sight communication means that there must be an
unblocked direct line between the workstation and the transceiver. If a person walks within
the line-of-sight while there is a transmission, the information would need to be sent again.
This kind of obstruction can slow down the wireless network.
Scattered infrared communication is a broadcast of infrared transmissions sent out in
multiple directions that bounces off walls and ceilings until it eventually hits the receiver.
Networking communications with laser are virtually the same as line-of-sight infrared
networks.
Wireless LANs have several disadvantages. They provide poor security, and are susceptible
to interference from lights and electronic devices. They are also slower than LANs using
cabling.
Installing Cable - Some Guidelines
When running cable, it is best to follow a few simple rules:
• Always use more cable than you need. Leave plenty of slack.
• Test every part of a network as you install it. Even if it is brand new, it may
have problems that will be difficult to isolate later.
• Stay at least 3 feet away from fluorescent light boxes and other sources of
electrical interference.
• If it is necessary to run cable across the floor, cover the cable with cable
protectors.
• Label both ends of each cable.
• Use cable ties (not tape) to keep cables in the same location together.
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