Itâs not just the size of these pockets in skin cells that differs, but also the density of melanin packed within them. In black skin the melanin is packed so tightly that it absorbs and scatters more light, giving you more protection from the sunâs ultraviolet rays.
If a component of the team needs to be replaced, the new person can understand where the project is currently, easily. The Agile method on the other hand is an iterative and incremental approach to software development. In this form of SDLC small modules of the final products are released for the users to review and then are changed accordingly.
HDLC stands for High-Level Data Link Control protocol. Like the two other WAN protocols mentioned in this article, HDLC is a Layer 2 protocol (see OSI Model for more information on Layers). HDLC is a simple protocol used to connect point to point serial devices. For example, you have point to point leased line connecting two locations, in two different cities. HDLC would be the protocol with the least amount of configuration required to connect these two locations. HDLC would be running over the WAN, between the two locations.