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@Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private CustomUserDetailsService customUserDetailsService; @Autowired private CustomAuthenticationProvider customAuthenticationProvider; @Autowired private CustomAccessDeniedHandler customAccessDeniedHandler; @Autowired private CustomAuthenticationSuccessHandler customAuthenticationSuc..

OS : What helps softwares run well in a hardware CPU: - ISA (Instruction Set Architecture) CISC vs RISC RISC had decreased number of instructions, it reduced the complexity, resulting in high speed and CPU Clock. - Pipelining Fetch | Decode | Execute | Write Back Mainly used for enhancing performance by executing multiple instructions at once, which is called pipelining. - Instruction Level Para..

The Open Systems Interconnection (OSI) model is a conceptual framework used to describe the communication functions of a network. It consists of seven layers, each of which represents a specific function in the communication process. The seven layers of the OSI model, from bottom to top, are: Physical Layer: Deals with the physical characteristics of the communication medium, such as voltage lev..

FDMA and TDMA seemed pretty intuitive, but studying CDMA seemed like a slightly more higher level then both. Some key terms in CDMA is Data Representation and the Chip Sequence. The The chip sequence is a short binary code, often just a few bits long, and is unique to each user in the network. In data representation, each data bit is represented by a long sequence of chips, which are produced by..

In computer networking, a packet is a unit of data that is routed between an origin and a destination on the internet. A packet contains two types of information: control information, which contains the source and destination addresses, and payload data, which contains the actual data being sent. On the other hand, a frame is a unit of data that is used for data transmission between two devices ..

To be continuously added in study RTS (Request To Send) : signal that a device sends to another device to request permission to transmit data. CTS (Clear To Send) : signal that a device sends back to the requesting device to indicate that the channel is clear and the requesting device can now transmit data. ACK (Acknowledgement) : signal that a receiving device sends to a transmitting device to ..