a port with ten times the bandwidth of another has one-tenth its cost). Limiting the range of the Path Cost parameter to 1-200,000,000 ensures that the accumulated Path Cost cannot exceed 32 bits over a concatenation of 20 hops.īy expanding the range of port costs, the 2004 standard allows for a simple inverse scale of bandwidth to cost (e.g. The recommended values for any intermediate link speed can be calculated as 20,000,000,000/(Link Speed in Kb/s). Basic CAT5 cable was designed for characteristics of up to 100 MHz. Describe the relationship between particle-wall collisions and pressure. Identify the relationship between pressure, volume, temperature, and number of gas molecules. Category 5 (CAT5) cable is a multi-pair (usually 4 pair) high performance cable that consists of twisted pair conductors, used mainly for data transmission. Describe the behavior of the gas particles in the box. Calculate the volume of gaseous NO produced by the combustion of 100 g of NH at 0C and 100 kPa.
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The following excerpt provides some insight: Category 5, 5e, 6, 6a and 7 Cable Standards. Gas stoichiometry is the study of the relative amounts of reactants and products in reactions that involve gases. Section 17.14 includes the following table: Category 5e Used in networks running at speeds up to 1000 Mbps (1 gigabit per second Gbps). Its light, durable, easy to ride, and comes with a 120mm fork that provides plenty of squish when they pick up speed over roots and rocks. Category 5Can transmit data at speeds up to 100 Mbps. Can transmit data at speeds up to 16 Mbps. Its successor, 802.1D-2004, increases the path cost to a 32-bit value, providing far more granularity in assigning costs, and enabling the use of a static scale. Can transmit data at speeds up to 10 Mbps. The 1998 standard allows for a 16-bit path cost value (held in software), 1 to 65535, and a 32-bit root path cost (the cost which is advertised in a BPDU field). However, the standard apparently makes no mention of the formula used to arrive at these costs if anyone can shed some light on this, please leave a comment.
#GIANT STP 1 HOW MANY SPEEDS FOR FREE#
The costs in the table are recommended by the IEEE in section 8.10.2 the 802.1D standard published in 1998 (available for free at the IEEE website). Anyone familiar with STP will likely have most of this table memorized: