Why is it necessary to terminate a SCSI bus?
What will be an ideal response?
Suppose a device puts a signal on a bus. This action involves switching a voltage?generator onto the bus (the
voltage generator is, of course, the output circuit of the gate driving the bus). This causes a pulse to propagate
along the bus (in both directions). When a pulse reaches the end of the bus, part of it is reflected back to the
source (exactly like a ripple on water reaching an obstacle and being reflected back). In fact, it is possible for a
pulse to be reflected from one end of the bus to the other and back again several times until it dies out. The
amount of the signal reflected depends on two factors: the characteristic impedance of the bus and the
termination at the end of the bus (the termination is the resistance or impedance seen by the pulse at the end of the bus). If the termination impedance is the same as the bus’s characteristic impedance, the reflection
coefficient is zero and no energy is reflected back. This is the ideal situation. Consequently, backplane buses and
the SCSI bus have terminators at the end of the bus to avoid reflections that can trigger and re?trigger devices.
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What is the following code an implementation of?
public class Program { public static void main(String[] args) { String text = "AABAACAADAABAAABAA"; String pattern = "AABA"; search(text, pattern); } private static void search(String text, String pattern) { int patternHash = pattern.hashCode(); int M = pattern.length(); int N = text.length(); for (int i = 0; i <= N - M; i++) { String part = text.substring(i, i + M); if (part.hashCode() == patternHash && part.equals(pattern)) { System.out.println("Pattern found at index " + i); } } } } a. Rabin-Karp algorithm b. Naive search algorithm c. Boyer-Moore algorithm d. Knuth-Morris-Pratt algorithm
A user can create a(n) ________ condition by placing criteria for more than one field on the same Criteria row
Fill in the blank(s) with correct word
A Biometrics task force will directly correlate to the combination of effective technology and effective policy. It will deliver capabilities in order to contribute to the enhancement of the biometric community.
Answer the following statement true (T) or false (F)
Copies of the sales order can be used for all of the following except
A. purchase order B. credit authorization C. shipping notice D. packing slip