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That is fiber optic cable, as FDDI stands for Fiber Distributed Data Interface
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The acronym FDDI stands for Fiber Distributed Data Interface, which provides enhanced data transmission in a local area network.
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FDDI refers to Fiber Disturbed Data Interface. Most people will just say FDDI for short. Most hoping, that the person in conversation knows what it stands for.
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Fiber Distributed Data Interface
It's a local area network technology that uses Fiber cable. It can support thousands of users so it's ideal for very large local area networks.
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William E Burr has written:
'Planning for the fiber distributed data interface (FDDI)' -- subject(s): Planning, Fiber Distributed Data Interface (Computer network standard), Local area networks (Computer networks)
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Token Ring (IEEE 802.5)
FDDI (Fiber Distributed Data Interface)
Actually came across this as I was checking my answer for a Networking final.
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Fiber Distributed Data Interface (FDDI) NICs are commonly used to connect host systems or file servers to FDDI network equipment using one connectin (single attachment) and to attach the network equipment to the FDDI cabling through two attachments (dual attachment).
FDDI is defined by the ANSI X3T9.5 standards committee and provides an access method to enable high-capacity data throughput on busy networks. It has a data throughput rate of 100Mbps, and is simliar to the token ring access method because it uses token passing for network communication.
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FDDI Advantages:
~Supports real time allocation of network bandwidth.
~Supports a lot of different types of network traffic.
~Is fault-tolerant because it uses dual fiber cables. If one cable fails FDDI moves the data to the other dual cable.
FDDI Disadvantages:
~It's expensive
~There is always a chance of multiple ring failures and as the ring grows, that chance increases.
~It's not used frequently due to cost, companies prefer to use copper (CDDI) if they are taking the ring approach.
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For a local area network (LAN), CDDI (Copper Distributed Data Interface) is a standard for data transmission based on FDDI (Fiber Distributed Data Interface) that uses shielded twisted-pair (STP) or unshielded twisted pair (UTP) copper wire instead of fiber optic lines. CDDI supports a dual-ring capacity of 200 Mbps. CDDI's maximum distance is up to 200 meters, which is much shorter than FDDI. CDDI is defined by the American National Standards Committee X3-T9.5 and conforms to the Open Systems Interconnection (OSI) model of functional layering. CDDI is officially named the Twisted-Pair Physical Medium Dependent (TP-PMD) standard and is also referred to as Twisted Pair Distributed Data Interface (TP-DDI).
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FDDI 1 vs FDDI 2
Fiber Distributed Data Interface (FDDI) is a data transmission standard for Local Area Networks (LAN) which uses fiber optic lines. A FDDI LAN can extend up to 200 kilometers and it can support thousands of users. The FDDI 1 protocol is based on the token ring protocol. FDDI 2 is an extended version of FDDI. It extends FDDI by adding capability to handle voice and video signals.
Difference between FDDI 1 and FDDI 2 (FDDI ii)
FDDI-2 is the second generation protocol of FDDI. The key difference between them is that, in addition to all the functionality FDDI provides, FDDI-2 provides the ability to handle voice signals and video. Even though both FDDI and FDDI-2 runs at 100 Mbits/sec on the fiber and transport asynchronous and synchronous types of frames, FDDI-2 can transport isochronous traffic using the newly developed hybrid mode. Further, FDDI and FDDI-2 stations can be operated in the same ring only in the basic FDDI mode
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Fiber distributed data interface (FDDI), which is an optical data communication standard used for long distance networks provides communication with fiber optic lines up to 200 kilometers at a speed of 100 megabit per second (Mbps).
It should be noted that relatively recently, a related copper specification, called Copper Distributed Data Interface (CDDI) has emerged to provide 100-Mbps service over copper. CDDI is the implementation of FDDI protocols over twisted-pair copper wire.
FDDI uses a dual-ring architecture with traffic on each ring flowing in opposite directions (calledcounter-rotating). The dual-rings consist of a primary and a secondary ring. During normal operation, the primary ring is used for data transmission, and the secondary ring remains idle and available for backup. The primary purpose of the dual rings, as will be discussed in detail later in this chapter, is to provide superior reliability and robustness. FDDI was later extended to FDDI-2 for long distance voice and multimedia communication.
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FDDI
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FDDI is a broad topic but if we want to describe in short then :
FDDI is a token ring network in which fiber optics cable is used as channel. there are three condition to design such a network-
1) there is a pair of fiber channel should passes to all the stations i.e. each host should have a pair of fiber optics cable(but should connected to only from one)
2)both channel should use same token
3)routing direction of both channel should be different.
the advantage of above three condition that if channel break down somewhere then we need to just short both channel and it will act as a single token ring channel.
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Uses a dual ring of single-mode or multimode fiber-optic.
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The commonly used fiber optic connector is
FC, LC, LT, SC, MTRJ, MU FDDI - ESCON Fiber optic connector and so on.
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I) Packet Switching
II) Frame relay
iii) Fiber Disturbed Data Interference (FDDI)
iv) Asynchronous Transfer Mode (ATM)
v) Switched Hub Technology
vi) Synchronous Optical Network (SONET)
T-carrier system
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IEEE 802.6 is a standard governed by the ANSI for Metropolitan Area Networks (MAN). It is an improvement of an older standard (also created by ANSI) which used the Fiber distributed data interface (FDDI) network structure. The FDDI-based standard failed due to its expensive implementation and lack of compatibility with current LAN standards. The IEEE 802.6 standard uses the Distributed Queue Dual Bus (DQDB) network form. This form supports 150 Mbit/s transfer rates. It consists of two unconnected unidirectional buses. DQDB is rated for a maximum of 160 km before significant signal degradation over fiberoptic cable with an optical wavelength of 1310 nm.
This standard has also failed, mostly due to the same reasons that the FDDI standard failed. Most MANs now use Synchronous Optical Network (SONET) or Asynchronous Transfer Mode (ATM) network designs, with recent designs using native Ethernet or MPLS.
Retrieved from "http://en.wikipedia.org/wiki/IEEE_802.6"1 answer
Both Token Ring and FDDI use the concept of a ring topology structure. However, Token Ring is used in a LAN, and FDDI is used in a MAN.
Token Ring is implemented with copper cable (UTP cable) and FDDI uses Fiber Optic cable.
Finally, the protocols are very different between the two. FDDI uses a synchronous type of transmission, where Token Ring uses an actual token (a 3 character packet) to control who has access to transmit or receive on the network. FDDI does not use this technique.
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For detail information about computer data interface visit the following link named
"Computer Data Interface"
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For detail information about computer data interface visit the following link named
"Computer Data Interface"
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distributed data services examples
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It actually depends on the type of fiber optic connector. LC connectors, ST connectors, SC connectors, FC, MPO etc. there are many varieties. So if you want to adopt fiber optic connector which is cost friendly and popular as well, ST connectors are good for you. If your need small size fiber optic connector LC connectors are good which is approximately half the size of an ST connector.
americancableassemblies. com/fiber-optic-cables/tactical-fiber-reels/
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Redundancy means duplicacy of data or repetitive data. In distributed database case the data is stored in different systems . So the answers is yes there can be redundancy of records / data.
In distributed database , data is stored in different systems. Since the data is distributed there is redundancy of records.
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It is a technology where we combine fiber and wireless technology seamlessly.
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A distributed data warehouse is a type of data warehouse architecture where data is distributed across multiple servers or nodes in a network. This allows for improved scalability, performance, and fault tolerance compared to a centralized data warehouse. Distributed data warehouses can handle large volumes of data more efficiently by spreading the workload across multiple nodes.
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FDDI networks can be up to 124 miles (200 kilometers) in length
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Jerry Cashin has written:
'High-speed networking' -- subject(s): Asynchronous transfer mode, Fiber Distributed Data Interface (Computer network standard), Ethernet (Local area network system), Local area networks (Computer networks)
'WOSA' -- subject(s): Computer architecture, Windows (Computer programs)
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The easiest way to tell if data is normally distributed is to plot the data.
line plot apex
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Distributed databases offer advantages such as improved scalability, increased availability, and better fault tolerance compared to centralized databases. They also provide better performance by reducing network latency and enabling data to be processed closer to where it is needed. Additionally, distributed databases can offer better data security by replicating data across multiple locations.
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Westell Technologies, Inc. is a company that makes telecommunications equipment such as modems, outdoor customs system integration, copper and fiber connectivity parts and distributed antenna system interface panels to telecommunications service providers.
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Distributed databases in a DBMS are databases that are stored on multiple computers across a network. They allow for data to be spread out and accessed simultaneously from different locations, which can improve performance and scalability. Distributed databases can enhance fault tolerance and reduce the risk of data loss.
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A User Interface controls how you enter data and instructions and how information is displayed on the screen.
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The mean and standard deviation. If the data really are normally distributed, all other statistics are redundant.
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Small Computer System Interface (SCSI)
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Transverse Tubules
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Muhammad Idrees has written:
'Design and management of distributed data processing' -- subject(s): Electronic data processing, Distributed processing
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