What is reference ?
Reference is a name that acts as an alias, or alternative name, for a previously defined variable or an object. prepending variable with “&” symbol... Read more »
Archive for February, 2007
What are storage qualifiers in C++ ?
They are.. const volatile mutable Const keyword indicates that memory once initialized, should not be altered by a program. Volatile keyword indicates that the value... Read more »
What are C++ storage classes?
C++ Storage Classes: auto: the default. Variables are automatically created and initialized when they are defined and are destroyed at the end of the block containing... Read more »
What is conversion operator??
Class can have a public method for specific data type conversions. for example: class Boo { double value; public: Boo(int i ) operator double() { return value; } }; Boo... Read more »
Explain difference between baseband and broadband transmission.
In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal. In broadband transmission, signals are sent on multiple frequencies,... Read more »
Explain redirector.
Redirector is software that intercepts file or prints I/O requests and translates them into network requests. This comes under presentation layer. Read more »
Explain the HELLO protocol used for.
The HELLO protocol uses time instead of distance to determine optimal routing. It is an alternative to the Routing Information Protocol. Read more »
Explain a DNS resource record.
A resource record is an entry in a name server’s database. There are several types of resource records used, including name-to-address resolution information.... Read more »
Explain External Data Representation.
External Data Representation is a method of encoding data within an RPC message, used to ensure that the data is not system-dependent. Read more »
Explain a pseudo tty.
A pseudo tty or false terminal enables external machines to connect through Telnet or rlogin. Without a pseudo tty, no connection can take place. Read more »
Explain anonymous FTP and why would you use it ?
Anonymous FTP enables users to connect to a host without using a valid login and password. Usually, anonymous FTP uses a login called anonymous or guest, with the... Read more »
Explain a Management Information Base (MIB).
A Management Information Base is part of every SNMP-managed device. Each SNMP agent has the MIB database that contains information about the device’s status,... Read more »
Explain the difference between an unspecified passive open and a fully specified passive open.
An unspecified passive open has the server waiting for a connection request from a client. A fully specified passive open has the server waiting for a connection... Read more »
Where we can use DLL made in C#.Net ?
Supporting .Net, bcoz DLL made in C#.Net semicompiled version. Its not a com object. It is used only in .Net Framework.As it is to be compiled at runtime to byte... Read more »
If A.equals(B) is true then A.getHashcode & B.getHashCode must always return same hash code.
The answer is False because it is given that A.equals(B) returns true i.e. objects are equal and now its hashCode is asked which is always independent of the fact... Read more »