Network Address Translation (NAT) and Port Address Translation (PAT) are the protocols used to map the unregistered private (inside local) address of an internal network to a registered public (inside global) address of an external network before transferring the packet. The main difference between them is that NAT is used to map public IP addresses to private IP addresses, it could be a one-to-one or many-to-one relation. On the other hand, PAT is a type of NAT where the multiple private IP … [Read more...]

The terms confusion and diffusion are the properties for making a secure cipher. Both Confusion and diffusion are used to prevent the encryption key from its deduction or ultimately for preventing the original message. Confusion is used for creating clueless ciphertext while diffusion is used for increasing the redundancy of the plaintext over the major part of the ciphertext to make it obscure. The stream cipher only relies on confusion. Alternatively, diffusion is used by both stream and block … [Read more...]

The major difference between active and passive attacks is that in active attacks the attacker intercepts the connection and modifies the information. Whereas, in a passive attack, the attacker intercepts the transit information with the intention of reading and analyzing the information not for altering it. There are various types of threats, attacks and vulnerabilities present to corrupt and breach the system security. Security attacks are the computer attacks that compromise the security … [Read more...]

The authentication and authorization are used in respect of information security which enables the security on an automated information system. The terminologies are interchangeably used but are distinct. The identity of a person is assured by authentication. On the other hand, authorization checks the access list that the authenticated person has. In other words, the authorization includes the permissions that a person has given. Content: Authentication Vs Authorization Comparison Chart … [Read more...]

DNS and DHCP both work on the client-server architecture but are dissimilar terms. DNS maps the domain name to IP address whereas DHCP is a protocol which assigns IP to the hosts in a network be it statically or dynamically. DHCP is also used while setting up the DNS server to the host. Content: DNS Vs DHCP Comparison Chart Definition Key Differences Conclusion Comparison Chart Definition of DNS DNS (Domain Name System) is a mechanism which provides directory lookup … [Read more...]

Cloud computing and grid computing almost have the same vision of providing services to the users through sharing capabilities and resources. Although the terms are differentiated based on application focus, architecture, resource usage patterns, number of services, interoperability, business models etcetera. Cloud computing banish the need of buying the hardware and software which requires complex configuration and costly maintenance for building and deploying applications instead it … [Read more...]

ADSL and Cable Modems seem to be cost-effective methods for delivering broadband network services. The fundamental difference between ADSL modem and Cable modem is that ADSL modem uses twisted pair cables for providing both voice and data types of services. On the other hand, cable modems work on coaxial cable. Furthermore, the theoretical carrying capacity of the coaxial cable is hundreds of time higher than the twisted pair cable. Content: ADSL Modem Vs Cable Modem Comparison Chart … [Read more...]

The GPS and DGPS are the satellite-based navigation systems. The basic difference between GPS and DGPS lies on their accuracy, DGPS is more accurate than GPS. DGPS was intentionally designed to reduce the signal degradation. GPS provides the accuracy about 10 meters, but DGPS can provide accuracy around 1 meter, even beyond that 10 cm. Content: GPS Vs DGPS Comparison Chart Definition Key Differences Conclusion Comparison Chart Definition of GPS Global Positioning … [Read more...]

The GPS and GPRS seem to be similar terms but are absolutely different in the sense. The difference between GPS and GPRS is that GPS is satellite-based navigation system whereas GPRS is used for providing cellular based data services. GPS facilitates a varying array of applications such as satellite operation, surveying and mapping, power grid, telecom, intelligent vehicles, precision agriculture etc. On the other hand, GPRS renders application such as Email accessing, multimedia messaging, … [Read more...]

ADSL (Asymmetric Digital Subscriber Line) and VDSL (Very High Bitrate Digital Subscriber Line) mainly differ in the speed of data transmission or data rate, where VDSL is significantly faster than ADSL. ADSL provides upstream rate 64 Kbps to 1 Mbps, and downstream rate 500 Kbps to 8Mbps whereas VDSL provides upstream rate 1.5 to 2.5 Mbps and downstream rate 50 to 55 Mbps. ADSL and VDSL are the variants of DSL technology. DSL stands for Digital Subscriber Line which basically transforms an … [Read more...]