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What is the difference between a mailboxes and message queue?
Mailbox is similar to a queue, which allows only atomic operations. They can be bounded/unbounded. Get/put task is used to suspend abounded mailbox. That?s why mailbox is used more for communication between threads. Queues are large structures. Inserting data in queues is very difficult
Definition function of transmission media its types?
TRANSMISSION MEDIAThe means through which data is transformed from one place to another is called transmission or communication media. There are two categories of transmission media used in computer communications.BOUNDED/GUIDED MEDIAUNBOUNDED/UNGUIDED MEDIA1. BOUNDED MEDIA:Bounded media are the physical links through which signals are confined to narrow path. These are also called guide media. Bounded media are made up o a external conductor (Usually Copper) bounded by jacket material. Bounded media are great for LABS because they offer high speed, good security and low cast. However, some time they cannot be used due distance communication. Three common types of bounded media are used of the data transmission. These areCoaxial CableTwisted Pairs CableFiber Optics CableCOAXIAL CABLE:Coaxial cable is very common & widely used commutation media. For example TV wire is usually coaxial.Coaxial cable gets its name because it contains two conductors that are parallel to each other. The center conductor in the cable is usually copper. The copper can be either a solid wire or stranded martial.Outside this central Conductor is a non-conductive material. It is usually white, plastic material used to separate the inner Conductor form the outer Conductor. The other Conductor is a fine mesh made from Copper. It is used to help shield the cable form EMI.Outside the copper mesh is the final protective cover. (as shown in Fig)The actual data travels through the center conductor in the cable. EMI interference is caught by outer copper mesh. There are different types of coaxial cable vary by gauge & impedance.Gauge is the measure of the cable thickness. It is measured by the Radio grade measurement, or RG number. The high the RG number, the thinner the central conductor core, the lower the number the thicker the core.Here the most common coaxial standards.50-Ohm RG-7 or RG-11 : used with thick Ethernet.50-Ohm RG-58 : used with thin Ethernet75-Ohm RG-59 : used with cable television93-Ohm RG-62 : used with ARCNET.CHARACTERISTICS OF COAXIAL CABLELow costEasy to installUp to 10Mbps capacityMedium immunity form EMIMedium of attenuationADVANTAGES COAXIAL CABLEInexpensiveEasy to wireEasy to expandModerate level of EMI immunityDISADVANTAGE COAXIAL CABLESingle cable failure can take down an entire network Twisted Pair CableThe most popular network cabling is Twisted pair. It is light weight, easy to install, inexpensive and support many different types of network. It also supports the speed of 100 mps.Twisted pair cabling is made of pairs of solid or stranded copper twisted along each other. The twists are done to reduce vulnerably to EMI and cross talk. The number of pairs in the cable depends on the type. The copper core is usually 22-AWG or 24-AWG, as measured on the American wire gauge standard. There are two types of twisted pairs cabling1. Unshielded twisted pair (UTP)2. Shielded twisted pair (STP)1. Unshielded twisted pair (UTP)UTP is more common. It can be either voice grade or data grade depending on the condition. UTP cable normally has an impedance of 100 ohm. UTP cost less than STP and easily available due to its many use. There are five levels of data cablingCategory 1These are used in telephone lines and low speed data cable.Category 2These cables can support up to 4 mps implementation.Category 3These cable supports up to 16 mps and are mostly used in 10 mps.Category 4These are used for large distance and high speed. It can support 20mps.Category 5This is the highest rating for UTP cable and can support up to 100mps.UTP cables consist of 2 or 4 pairs of twisted cable. Cable with 2 pair use RJ-11 connector and 4 pair cable use RJ-45 connector.Characteristics of UTPlow costeasy to installHigh speed capacityHigh attenuationEffective to EMI100 meter limitAdvantages of UTPEasy installationCapable of high speed for LANLow costDisadvantages of UTPShort distance due to attenuation2. Shielded twisted pair (STP)It is similar to UTP but has a mesh shielding that's protects it from EMI which allows for higher transmission rate.IBM has defined category for STP cable.Type 1STP features two pairs of 22-AWGType 2This type include type 1 with 4 telephone pairsType 6This type feature two pairs of standard shielded 26-AWGType 7This type of STP consist of 1 pair of standard shielded 26-AWGType 9This type consist of shielded 26-AWG wireCharacteristics of STPMedium costEasy to installHigher capacity than UTPHigher attenuation, but same as UTPMedium immunity from EMI100 meter limitAdvantages of STP:ShieldedFaster than UTP and coaxialDisadvantages of STP:More expensive than UTP and coaxialMore difficult installationHigh attenuation rateFiber OpticsFiber optic cable uses electrical signals to transmit data. It uses light. In fiber optic cable light only moves in one direction for two way communication to take place a second connection must be made between the two devices. It is actually two stands of cable. Each stand is responsible for one direction of communication. A laser at one device sends pulse of light through this cable to other device. These pulses translated into "1's" and "0's" at the other end.In the center of fiber cable is a glass stand or core. The light from the laser moves through this glass to the other device around the internal core is a reflective material known asCLADDING. No light escapes the glass core because of this reflective cladding.Fiber optic cable has bandwidth more than 2 gbps (Gigabytes per Second)Characteristics Of Fiber Optic Cable:ExpensiveVery hard to installCapable of extremely high speedExtremely low attenuationNo EMI interferenceAdvantages Of Fiber Optic Cable:FastLow attenuationNo EMI interferenceDisadvantages Fiber Optics:Very costlyHard to install
What is the difference between bounded and unbounded media?
Bounded media use physical connectors, such as cables or wires, to transmit signals between devices, while unbounded media use wireless transmission methods, like radio waves or infrared signals. Bounded media have a defined path for signals to travel, while unbounded media allows for more flexibility in signal transmission without physical constraints.
Is unit step signal is bounded or unbounded?
bounded signal
What is difference between infinite Bounded and infinite unbounded set?
A set of numbers is bounded if there exist two numbers x and y (with x ≤ y)such that for every member of the set, x ≤ a ≤ y. A set is unbounded if one or both of x and y is infinite. Similar definitions apply for sets in more than 1 dimension.
Is the identity function bounded or unbounded?
That depends! The identity operator must map something from a space X to a space Y. This mapping might be continuous - which is the case if the identify operator is bounded - or discontinuous - if the identity operator is unbounded.
Difference between automatic buffering and explicit buffering?
Explicit buffering is also known as "Zero Capacity Buffering" where it has maximum length of 0. Automatic buffering can be either "Bounded Capacity Buffering" or "Unbounded Capacity Buffering"
What is the difference between automatic buffering and explicit buffering?
Explicit buffering is also known as "Zero Capacity Buffering" where it has maximum length of 0. Automatic buffering can be either "Bounded Capacity Buffering" or "Unbounded Capacity Buffering"
Is every continuous function is bounded in C?
No. y = 1/x is continuous but unbounded.
What is the difference between a mailboxes and message queue?
Mailbox is similar to a queue, which allows only atomic operations. They can be bounded/unbounded. Get/put task is used to suspend abounded mailbox. That?s why mailbox is used more for communication between threads. Queues are large structures. Inserting data in queues is very difficult
Is the graph of a solution set of a system of two linear inequalities always bounded?
No it is NOT always bounded. Here is an example of an unbounded one. 1. 2x-y>-2 2. 4x+y
What is the difference exponential growth and decay?
They are incredibly different acceleration patterns. Exponential growth is unbounded, whereas exponential decay is bounded so as to form a "dynamic equilibrium." This is why exponential decay is so typical of natural processes. To see work I have done in explaining exponential decay, go to the page included in the related links.
Difference between occlusal outline and occlusal table of the teeth?
occlusal table means the area bounded by the cusp ridges and marginal ridges
Is every measurable functions continuous?
No, a measurable function may have a finite number of discontinuities (for the Riemann measure), or a countably infinite number of discontinuities (for the Lebesgue measure). It should also be bounded (have some upper and lower bound, or limit, in the domain that is being measured), to be measureable. At least, some unbounded functions are not measurable.No, a measurable function may have a finite number of discontinuities (for the Riemann measure), or a countably infinite number of discontinuities (for the Lebesgue measure). It should also be bounded (have some upper and lower bound, or limit, in the domain that is being measured), to be measureable. At least, some unbounded functions are not measurable.No, a measurable function may have a finite number of discontinuities (for the Riemann measure), or a countably infinite number of discontinuities (for the Lebesgue measure). It should also be bounded (have some upper and lower bound, or limit, in the domain that is being measured), to be measureable. At least, some unbounded functions are not measurable.No, a measurable function may have a finite number of discontinuities (for the Riemann measure), or a countably infinite number of discontinuities (for the Lebesgue measure). It should also be bounded (have some upper and lower bound, or limit, in the domain that is being measured), to be measureable. At least, some unbounded functions are not measurable.
