Description : Describe 5 numeric value types ranges.
Last Answer : sbyte -128 to 127, byte 0 – 255, short -32,768 to 32,767, int -2,147,483,648 to 2,147,483,647, ulong 0 to 18,446,744,073,709,551,615
Description : Briefly explain what is meant by a reference type and a value type.
Last Answer : A value type holds all of the data represented by the variable within the variable itself. A reference type contains a reference to a memory address that holds the data instead of the actual data itself.
Description : Briefly explain encapsulation and why it is important in object-oriented - programming.
Last Answer : Encapsulation is the principle that all of the data and functionality required by an object be contained by that object. This allows objects to exist as independent, interchangeable units of functionality without maintaining dependencies on other units of code.
Description : Briefly explain the difference between Public (public), Friend (internal), and Private (private) access levels as they apply to user-defined types and members.
Last Answer : In user-defined types, Public (public) classes can be instantiated by any element of the application. Friend (internal) classes can be instantiated only by members of the same assembly, and Private ( ... the same assembly, and Private (private) members can be accessed only from within the type.
Description : Python : Convert a string representation of a dictionary to a dictionary -Web-Development
Last Answer : answer:
Description : Is String is Value Type or Reference Type in C#?
Last Answer : A string is an object(Reference Type).
Description : Briefly highlight the differences between imperative and declarative security as they pertain to code access security.
Last Answer : Imperative security is implemented by calling methods of Permission objects in code at run time. Declarative security is configured by attaching attributes representing permissions to classes ... request assembly-wide permissions using the Assembly (assembly) directive with declarative security.
Description : Briefly describe the five accessibility requirements of the Certified for Windows logo program.
Last Answer : The five requirements are o Support standard system settings. This requires your application to be able to conform to system settings for colors, fonts, and other UI elements. o Be ... information by sound alone. This requirement can be met by providing redundant means of conveying information.
Description : Briefly describe how to use the PrintDocument component to print a document. Discuss maintaining correct line spacing and multipage documents.
Last Answer : The PrintDocument class exposes the Print method, which raises the PrintPage event. Code to render printed items to the printer should be placed in the PrintPage event handler. The PrintPage event ... been printed, you must incorporate all logic for printing multiple pages into your event handler.
Description : Briefly describe the three types of user-developed controls and how they differ.
Last Answer : The three types of user-developed controls are inherited controls, user controls, and custom controls. An inherited control derives from a standard Windows Forms control and inherits the ... inherit only generic control functionality. All specific functionality must be implemented by the developer.
Description : What are the four major parts of a SQL SELECT statement? Briefly describe each one.
Last Answer : The four major parts of a SELECT statement are SELECT, FROM, WHERE, and ORDER BY. SELECT specifies the fields to be retrieved. FROM specifies the table from which the records are to be retrieved. WHERE ... the records to be retrieved, and ORDER BY allows you to specify a sort order for the records.
Description : Briefly describe an XmlDataDocument and how it relates to a DataSet.
Last Answer : An XmlDataDocument is an in-memory representation of data in a hierarchical XML format. Each XmlDataDocument is synchronized with a DataSet. Whenever changes are made to one object, the other is instantly updated. Thus, you can use the XmlDataDocument to perform XML manipulations on a DataSet.
Description : Briefly discuss the advantages and disadvantages of using typed DataSet objects.
Last Answer : Typed DataSet objects allow you to work with data that is represented as members of the .NET common type system. This allows your applications to be aware of the types of data returned in a DataSet and serves ... if you do not know the structure of your data, and can be used with any data source.
Description : Briefly contrast connected and disconnected data access in ADO.NET.
Last Answer : In ADO.NET, connected data access is available through the DataReader, which is a lightweight class designed to provide very fast and efficient data access. It is severely limited, however, in ... to update the database and keeping the connection open just long enough to execute those commands.
Description : What are the two kinds of multidimensional arrays? Briefly describe each.
Last Answer : Multidimensional arrays can be either rectangular arrays or jagged arrays. A rectangular array can be thought of as a table, where each row has the same number of columns. Rectangular arrays with ... dimensional jagged array is like a table where each row might have a different number of columns.
Description : Briefly summarize the similarities and differences between arrays and collections.
Last Answer : Arrays and collections allow you to manage groups of objects. You can access a particular object by index in both arrays and collections, and you can use For Each Next (foreach) syntax to iterate ... Collections namespace can grow or shrink dynamically, and items can be added or removed at run time.
Description : Briefly describe how a class is similar to a structure. How are they different?
Last Answer : Both classes and structures can have members such as methods, properties, and fields, both use a constructor for initialization, and both inherit from System.Object. Both classes and structures can be ... are value types, and the memory that holds structure instances is allocated on the stack.
Description : Briefly describe what members are, and list the four types of members.
Last Answer : Members are the parts of a class or a structure that hold data or implement functionality. The primary member types are fields, properties, methods, and events.
Description : Briefly describe how garbage collection works.
Last Answer : The garbage collector is a thread that runs in the background of managed .NET applications. It constantly traces the reference tree and attempts to find objects that are no longer referenced. When a nonreferenced object is found, its memory is reclaimed for later use.
Description : Briefly describe the major components of the .NET Framework and describe what each component does.
Last Answer : The .NET Framework consists of two primary parts: the common language runtime, which manages application execution, enforces type safety, and manages memory reclamation, and the .NET base class library, which consists of thousands of predeveloped classes that can be used to build applications.
Description : What’s the advantage of using System.Text.StringBuilder over System.String?
Last Answer : StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it’s being operated on, a new instance is created.
Description : What does the Initial Catalog parameter define in the connection string?
Last Answer : The database name to connect to.
Last Answer : StringBuilder is more efficient in cases where there is a large amount of string manipulation. Strings are immutable, so each time a string is changed, a new instance in memory is created.
Description : What’s the difference between System.String and System.Text.StringBuilder classes?
Last Answer : System.String is immutable. System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed.
Description : How can you implement a mutable string?
Last Answer : System.Text.StringBuilder
Description : Name a few string properties.
Last Answer : trim, tolower, toupper, concat, copy, insert, equals, compare.
Description : Is string Unicode, ASCII, or something else?
Last Answer : Unicode
Description : string is an alias for what?
Last Answer : System.String
Description : What’s the difference between System.String and System.StringBuilder classes?
Last Answer : System.String is immutable, System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed.
Description : C# provides a default constructor for me. I write a constructor that takes a string as a parameter, but want to keep the no parameter one. How many constructors should I write?
Last Answer : Two. Once you write at least one constructor, C# cancels the freebie constructor, and now you have to write one yourself, even if there’s no implementation in it.
Description : Define what is the difference between string keyword and System. String class?
Last Answer : String keyword is an alias for System. String class. Therefore, the System. String and string keyword are the same, and you can use whichever naming convention you prefer. The String class provides many methods for safely creating, manipulating, and comparing strings.
Description : Explain how to convert data in legacy code page formats to the Unicode format.
Last Answer : You can use the Encoding.Convert method to convert data between encoding types. This method requires instances of both encoding types and an array of bytes that represents the data to be converted. ... GetBytes method and can convert an array of bytes back to chars with the Encoding.GetChars method.
Description : Which of the following is true in Statistical reasoning? a) The representation is extended to allow some kind of numeric measure of certainty to be associated with each statement b) The ... extended to allow some kind of numeric measure of certainty to be associated common to all statements
Last Answer : a) The representation is extended to allow some kind of numeric measure of certainty to be associated with each statement
Description : What term is used for the representation of two numeric characters stored in eight bits?
Last Answer : Packing or packed data.
Description : How do you convert a value-type to a reference-type?
Last Answer : Use Boxing.
Description : Absolute entitiesare_ Ss whom value signify storage locations that are independent of resulting machine code: a. Numeric constants b. String constants c. Fixed addresses d. Operation codes e. Allofthese
Last Answer : e. Allofthese
Description : Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters? A. cat emp[!0-9] B. more [emp][!0-9] C. cat emp[x-z]
Last Answer : A. cat emp[!0-9]
Description : A sample rate of ________is required for a good quality representation of telephone conversation. (A) 4500 times per second. (B) 700 integer sample points per minute. (C) 50 times per second per mile of distance travelled. (D) 8000 times per second.
Last Answer : (C) 50 times per second per mile of distance travelled.
Description : In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To ... D) To fill a column in a tuple when that column does not really exist for that particular tuple.
Last Answer : (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL.
Description : How could you execute DDL commands, such as ALTER or CREATE TABLE, against a database with ADO.NET?
Last Answer : You must use a Command object to execute DDL commands. You can set the CommandType property to Text and enter the appropriate DDL command in the CommandText property. Then call Command.ExecuteNonQuery to execute the command.
Description : Single and double are the types of (a) Integer data type (b) Decimal numbers -Technology
Last Answer : (d) Date/Time will be the data type because it allows storing date and time format.
Description : Explain when a type conversion will undergo an implicit cast and when you must perform an explicit cast. What are the dangers associated with explicit casts?
Last Answer : Types can be implicitly converted when the conversion can always take place without any potential loss of data. When a potential loss of data is possible, an explicit cast is required. If an explicit cast is improperly performed, a loss of data precision can result, or an exception can be thrown.
Description : Arithmetic operation are carried by such micro operation on stored numeric data available in a. Register b. Data c. Both d. None
Last Answer : a. Register
Description : State the representation of double precision floating point number?
Last Answer : Double precision representation contains 11 bits excess -1023 exponent E’ which has the range 1≤ E’ ≤ 2046 for normal values. This is the actual exponent E is in range -1022 ≤ E ≤ 1023. The 53 bit mantissa provides a precision equivalent about 16 decimal digits.
Description : Which of the following is not a primitive data type: a) String b) Double c) Boolean d) None of The Above
Last Answer : a) String
Description : Explain how to retrieve information from the configuration file at run time. How would you store information in the configuration file at design time?
Last Answer : You must first create an instance of AppSettingsReader to read the configuration file. You can then call the GetValue method to read values represented in the configuration file. To add configuration ... used to retrieve the entry. The value can be changed between executions of the application.