Found 496 Articles for Computer Engineering

Both DES and AES are symmetric-key block ciphers that are used in encryption where just one key (the secret key) is utilized to encode and decode electronic data. The key must be exchanged between the organizations communicating using symmetric encryption so that it can be utilized in the decryption process.Go through this article to find out the features of AES and DES ciphers and how they differ from each other.What is DES Cipher?The Data Encryption Standard, often known as DES, is a symmetric key block cypher developed by IBM in 1977.Plaintext is divided into two halves in DES encryption, and ... Read More

A LAN is a computer network that is limited to a particular geographic area. Ethernet, the other hand, is a LAN network standard used in wired LAN. Go through this article to find out more about the features of Ethernet and LAN and how they are different from each other.What is Ethernet?Ethernet is a widely used LAN standard. Ethernet refers to networking technologies and systems used in local area networks (LANs) to connect computers inside a single physical space. It is defined under IEEE 802.3 standards. It is very easy to understand, implement, maintain and is a low-cost implementation. It ... Read More

MD5 and SH1 are hashing algorithms. MD5 is much faster than SH1Following are the important differences between MD5 and SH1.Sr. No.KeyMD5SH11DefinitionMD5 stands for Message Digest.SHA stands for Secure Hash Algorithm.2Supported LengthMD5 can have 128 bits length of digest message.SHA can have 160 bits length of digest message.3SpeedMD5 is faster than SHA.SHA is slower than MD5.4ComplexityMD5 is simple than SHA.SHA is quiet complex than MD5.5SecurityMD5 provides poor security.SHA provides balanced security.6Crack CodeIf one want to seek two messages having same identical message digest, 264 operations to be performed.If one want to seek two messages having same identical message digest, 280 operations ... Read More

SDRAM and DDR are two different types of RAM. SDRAM was released in 1993 and the latest variant of SDRAM are DDR1, DDR2 and DDR3. SDRAM stands for Synchronous Dynamic Random Access Memory. SDRAM was very common before the release of DDR. SDRAM is a single data rate memory. On the other hand, DDR stands for Double Data Rate. As the name indicates, DDR provides double data transmission in each clock cycle as compared to SDRAM. Read through this article to find out more about SDRAM and DDR and how they are different from each other. What is SDRAM? SDRAM ... Read More

BOOTP, Bootstrap Protocol, is used to configure the host and get the host address along with bootstrap info. DHCP, Dynamic Host Configuration Protocol Server is an extended version of BOOTP and is used to configure the hosts dynamically.Read through this article to find out more about these two protocols and how they differ from each other.What is BOOTP?The Bootstrap Protocol is a networking protocol that allows a configuration server to provide an IP address to network devices automatically in Internet Protocol networks. RFC 951 was the first to define the BOOTP.When a network-connected machine wakes up, its IP stack sends ... Read More

A Domain Name System (DNS) server is used to translate domain names to IP Addresses and vice versa. DHCP is a client/server protocol that automatically assigns an IP address and other configuration information to an Internet Protocol (IP) host.Read through this article to find out more about DNS and DHCP and how they are different from each other.What is DNS?DNS is a hierarchical and decentralized naming system for computers, and other resources that are connected to a private network or the Internet. It connects a variety of bits of data to domain names assigned to each of the participants.DNS transforms ... Read More

UMA and NUMA are shared memory models. Multiprocessors are divided among these type of categories. In UMA, Uniform Memory Access, a single memory controller is used and it is applicable for general purpose applications and time sharing applications. In NUMA, Non-Uniform Memory Access, multi memory controllers are used. NUMA is suitable for real-time applications and time critical applications.Following are the important differences between UMA and NUMA.Sr. No.KeyUMANUMA1DefinitionUMA stands for Uniform Memory Access.NUMA stands for Non Uniform Memory Access.2Memory ControllerUMA has single memory controller.NUMA has multiple memory controllers.3Memory AccessUMA memory access is slow.NUMA memory accsss is faster than UMA memory.4BandwidthUMA has ... Read More

In case of a computer system, memory is one of the most important parts of the system. Computer memory is entirely responsible for storing data, information, instructions, etc. in the system and it also defines the performance of the system. There are several types of computer memories available. But in this article, we only discuss about cache memory and virtual memory, and the important differences between them. What is Virtual Memory? Virtual Memory is a technique to increase the main memory capacity. It uses data swap technology and hard disk area is used as virtual memory. As its name ... Read More

In computer systems, memory is a hardware component of the system that stores data and information in the computer. The computer memory can be classified into two main types namely – primary memory and secondary memory. The primary memory is further divided into two main types – RAM and ROM. Read through this article to find out more about RAM and ROM and how they are different from each other. Let's start with some basics of RAM and ROM. What is RAM? RAM stands for Random Access Memory. RAM is a type of primary memory of a computer system. ... Read More

Hubs are basic network devices that operate at the Physical Layer and they do not perform packet filtering or addressing function; they send the data packets to all the connected devices. Switches, on the other hand, function at the Data Link Layer to connect several devices in a network. Switches are mostly utilized to transmit data packets between various network devices such as routers and servers.Read through this article to find out more about hubs and switches and how they are different from each other.What is a Switch?A switch is essentially a piece of hardware or a device responsible for ... Read More