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Articles by Bhanu Priya
Page 25 of 106
What is memory hierarchy?
The Computer memory hierarchy looks like a pyramid structure which is used to describe the differences among memory types. It separates the computer storage based on hierarchy.Level 0: CPU registersLevel 1: Cache memoryLevel 2: Main memory or primary memoryLevel 3: Magnetic disks or secondary memoryLevel 4: Optical disks or magnetic types or tertiary MemoryIn Memory Hierarchy the cost of memory, capacity is inversely proportional to speed. Here the devices are arranged in a manner Fast to slow, that is form register to Tertiary memory.Let us discuss each level in detail:Level-0 − RegistersThe registers are present inside the CPU. As they ...
Read MoreWhat is data Abstraction in DBMS?
Data Abstraction is a process of hiding unwanted or irrelevant details from the end user. It provides a different view and helps in achieving data independence which is used to enhance the security of data.The database systems consist of complicated data structures and relations. For users to access the data easily, these complications are kept hidden, and only the relevant part of the database is made accessible to the users through data abstraction.Levels of abstraction for DBMSDatabase systems include complex data-structures. In terms of retrieval of data, reduce complexity in terms of usability of users and in order to make ...
Read MoreWhat is operating system design and implementation?
The operating system is needed to design and implement because without proper design and implementation any system cannot work properly, for every aspect or for any development a proper design and implementation should be necessary so that it can work in good manner and we can easily debug if any failures occur.So, design and implementation is a necessary part of an operating system and this technique can be used by every user who uses a computer.There are different types of techniques to design and implement the operating system.Design goalsMechanismImplementationLet us discuss each technique in detail.Design goalsLet us understand the features ...
Read MoreWhat is a distributed Operating System?
Distributed Operating System is a type of model where applications are running on multiple computers linked by communications. It is an extension of the network operating system which supports higher levels of communication and integration of the machines on the network. Distributed OS runs on multiple CPUs but for an end-user, it is just an ordinary centralized operating system. It can share all resources like CPU, disk, network interface, nodes, computers, etc. from one site to another site, and it increases the data available on the entire ...
Read MoreWhat are noiseless and noisy channels?
Data link layer protocols are divided into two categories based on whether the transmission channel is noiseless or noisy. The data link layer protocol is diagrammatically represented below − Noiseless Channels There are two noiseless channels which are as follows − Simplex channel Stop & wait channel Let us consider an ideal channel where no frames are lost, duplicated, or corrupted. We introduce two protocols for this type of channel. These two protocols are as follows − Protocol that does not use flow control. Protocol that uses the ...
Read MoreCreate a selectable list in HTML
The tag is used to create a drop-down list in HTML document. We just need to add the “multiple” attribute to the element. Now, in order to select multiple options, we use following syntax − text The HTML tag also supports the following additional attributes − Attribute Value Description Disabled disabled Disables the input control. The button won't accept changes from the user. It also cannot receive focus and will be skipped when tabbing. Label text Defines a label to use when ...
Read MoreHow to include the result of a calculation in HTML5?
To define or include a result of calculation in HTML, we use tag. The output tag helps in providing the result of calculation, which is performed by the JavaScript (Client side scripting language). Syntax Following is the usage of tag − --- Attributes The attributes used in output tag is shown below − Attribute Description for List of IDs of other elements, i.e. it indicates the elements who have contributed input value to the calculation. form Enables to place output elements anywhere within a ...
Read MoreSection that contains only navigation links in HTML5
Navigational links can be provided by using tag in the document. The links of nav element navigates to other webpages or points to different section of same webpage. Examples of nav element are contents, tables, menus and indexes. Syntax Following is the usage of tag in HTML − Links…… Example Following example where we are trying to create a section that contains only navigation links − TutorialsPoint ...
Read MoreHow to allow no breaks in the enclosed text in HTML?
To allow no breaks in the enclosed text in HTML, we will use tag for creating a single line text, it does not bother about how long the statement is. If we want to read whole text a horizontal scroll has to be used. It is exactly opposite to break tag. tag is not supported in HTML5. This tag does not contain any attribute, it is having an open and closed tags. The tag in HTML The HTML tag is used to instruct the browser not to break the specified text. This is used ...
Read MoreDefine a scalar measurement within a known range in HTML
To define a scalar measurement within a known range or a fractional value, we use tag in HTML. tag is also called as gauge. For disk usages, relevance of query results etc., we use tag in HTML. The tag is not used to indicate progress bar, If we want to indicate progress bar, we use tag. For best accessibility it’s better to use tag while working on tag. Syntax Following is the usage of tag in HTML − Example Following example where we are trying to define a scalar ...
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