Notes On Communications And Networking

Communications between individuals is known as an interaction and as you spend time communicating with

Communication in the workplace is a process used to transfer information or instruction from one individual to a group or another individual.

In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in

Non Conductive: A serious concern with outdoor cables in certain computer networks is they can be hit by lightning, causing destruction to wires and other cables that are involved in the network. Fiber optic cables can be made non-conductive by avoiding metal in their design. These kinds of cables are economical and standard for many indoor applications. Outdoor versions are more expensive since they require the special strength members, but they can still be valuable in eliminating ground loop and protecting electromagnetic equipment from surge damage.

Coaxial cable uses a single conductor in the middle of a cable and the central conductor is surrounded by an insulator which is called the dielectric. Coax cables have become obsolete. Unshielded twisted pair cabling, also known as UTP cabling, has become the most common used network cabling. UTP cabling consists of four twisted pairs of wire, which have a different number of twists per foot, all encased on one sheath. This cabling is graded by different categories. Category 5 is recommended for Ethernet speeds of 100 Mbps. Category 5e, for running gigabit Ethernet or 1000BaseT networks. Category 6 and Category 6a are used to give better performance at higher speeds. Fiber optic cable is wave guided or light guided because it guides the light waves along the length of the cable. Single mode fiber optic cable can operate over long distances. Because fiber allows one mode of light to propagate, light pulses put on the fiber keep their shape much longer. This allows the light pulses to travel much further without interfering with other

1. Straight-through cable (39-40): connects the wire at pin 1 on one end of the cable to pin 1 at the other end of the cable; the wire at pin 2 needs to connect to pin 2 on the other end of the cable; pin 3 on one end connects to pin 3 on the other; and so on. (To create a straight-through cable, both ends of the cable use the same TIA pinout standard on each end of the cable.)

There are 3 security features about Hamachi: (1) Encrypted communications：Secure communications using AES 256-bit encryption, over public and private networks; (2) Centralized access controls: Control network access and usage, including password management, network authentication, network locking, and ongoing network membership; (3) Network / client configuration management：Configure default settings for individual networks and clients, with support for full, restricted and minimal client interface modes

2. Backbone Cable : Backbone cabling is the inter-building and intra-building cable connections in structured cabling between entrance facilities, equipment rooms and telecommunications closets. Backbone cabling consists of the transmission media, main and intermediate cross-connects and terminations at these locations. This system is mostly used in data centers.

Humans act toward people, things, and events on the basis of the meanings they assign to them. Once people define a situation as real, it has very real consequences. Without language there would be no thought, no sense of self, and no socializing presence of society within the individual. (Socio-cultural tradition)

Legacy Ethernet is half-duplex, meaning information can move in only one direction at a time. In a totally switched network, nodes only communicate with the switch and never directly with each other. Switched networks also employ either twisted pair or fiber optic cabling, both of which use separate conductors for sending and receiving data. In this type of environment, Ethernet stations can forgo the collision detection process and transmit at will, since they are the only potential devices that can access the medium. This allows end stations to transmit to the switch at the same time that the switch transmits to them, achieving a collision-free environment. (Pidgeon, 2011)

Due to an accidental fiber optic break from our cable company, the Cardio Machines currently do not have a television signal.

Twisted pair cable has two types these are UTP unshielded twisted pair and STP shielded twisted pair, but The most common of twisted cable is (UTP), unshielded twisted pair consist of two insulate wires twisted together. Normal telephone and data communication cables both are a types of UTP,the maximum distant of UTP cable is 80 .It is less costly and less resistant to distortion. Another type is Shielded twisted pair (STP ) consist of two twisted wires that are insulate and surrounded by a shielding which made of metallic material like foil. The foil jacket helps to avoid crosstalk and noise coming from outside source . an disadvantages of STP is must be grounded, more costly than UTP and it is very hard to terminate. STP acts as obstacle to external electromagnetic forces, therefore its prevent them from affecting the signals transfer over the weir inside the shielding. And The maximum distance for this cable is 100m.

When a CPU is composed of two or more processors, each one is referred to as a(n) ________.

In main powered equipment, exposed metal part are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails.

Communication is a process where we share our feelings, ideas, thoughts, suggestion, experience, feedback, opinions, etc. It’s a dialogue in which the sharing of meaningful information are constantly coming in and going out between two or more people in order