Why an Ethernet LAN may have collision?

Can you please answer the following question Thanks. Why an Ethernet LAN may have collision? How about Token Ring and FDDI? Will they also have collision? Why and why not?

The SS7 network is used in the North America (i.e. USA and Canada).

Can you please help me with the following study question. Thanks 1. The SS7 network is used in the North America (i.e. USA and Canada). How about in European countries? Are they also using the SS7 network?

The Frame Relay LMI (Local Management Interface) spec is defined by what companies or organizations?

Can you please help with the following study question. Thanks The Frame Relay LMI (Local Management Interface) spec is defined by what companies or organizations? What are the functions it can provide?

Ethernet and Token Ring, DCE and DTE

I need to explain and compare the following terms to help me get ready for a test. Can you help. Ethernet and Token Ring DCE and DTE USB and USB2 Analog and Digital ADSL and Cable Modem ISDN BRI and PRI

Two-Dimensional Cartesian Structure

Hi, I need assistance in the following problem. One of the problems of storing data in a matrix (a two-dimensional Cartesian structure) is that if not all of the elements are used, there might be quite a waste of space. In order to handle this, we can use a construct called a "sparse matrix", where only the active elements appear. Each such element is accompanied by its two indexes (the row and the column). Discuss in what ways such a structure is similar to and/or different than a list. Best Regards,