Gigabit Ethernet
Brief History and the IEEE 802.3z Task Force As applications increased, the demand on the network, newer, high-speed protocols such as FDDI and ATM became available. However, in the last…
100 BASE TX
This option uses two pairs of category 5 UTP or two shielded twisted-pair (STP) cable to connect a station to hub as shown in Fig. One pair is used to…
Troubleshooting Centrifugal Pumps
Because most of the pumps on board ship are centrifugal pumps, we will examine the symptoms and common causes of centrifugal pump problems here. Centrifugal pumps work, as the name…
100 BASE-T4
This option is designed to avoid overwriting. It is used for half-duplex communication using four wire-pairs of the existing category 3 UTP cables, which are already available for telephone services…
Software Re-engineering
When we need to update the software to keep it to the current market, without impacting its functionality, it is called software re-engineering. It is a thorough process where the…
Ever Seen a Monument for Marine Engineers?-Engine Room Heroes of the “Titanic”
Have you ever seen a monument erected for Marine Engineers? Wondering what it is and where is it? Coming back to the memorial, here is a picture which I took…
High Speed LANs – CSMA/CD based
Introduction In the preceding lesson we have seen that high-speed LANs have emerged broadly into three types - based on token passing, successors of Ethernet and based on switching technology.…
How much bigger can container ships get?
The world's cargo ships are getting big, really big. No surprise, perhaps, given the volume of goods produced in Asia and consumed in Europe and the US. But are these…
Fault Tolerance
FDDI provides a number of fault-tolerant features. In particular, FDDI's dual-ring environment, the implementation of the optical bypass switch, and dual-homing support make FDDI a resilient media technology. Dual Ring…
No more flares on life boats —Laser device maker hopes its products will replace flares
“Slowly move the laser back and forth across your target.” At 16 miles, the beam is some 6,000 feet wide,the laser has a 72-hour burning life on two AA batteries. The company recommends…
