THE APPLICATION LAYER
The Application Layer
Having finished all the preliminaries, we now come to the layer where all the applications
are found. The layers below the application layer are there to provide reliable transport,
but they do not do rea
THE TRANSPORT LAYER
The Transport Layer
The transport layer is not just another layer. It is the heart of the whole protocol hierarchy.
Its task is to provide reliable, cost-effective data transport from the source machine to the
3 Review Questions
1. Source port number y and destination port number x.
2. An application developer may not want its application to use TCPs congestion
controlChapter, which can throttle the applications sending rate at times of
congestion. Often, desig
The pumping lemma gives you a pp
You give a word ss of the language of length at least pp
The pumping lemma rewrites it like this: s=uvxyzs=uvxyz with some conditions (|vxy|p|vxy|p and |vy|1|vy|1)
You give an integer n0n0
If uvnxynzuv n xy n z is not in L
public class Circle cfw_
/ save as "Circle.java"
/ private instance variable, not accessible from outside this class
private double radius;
private String color;
/ 1st constructor, which sets both radius and color to default
public Circle() cfw_
In Prolog all thins are defined in terms of two constructs: the fact and the rule.
A fact is a Prolog statement consisting simply of an identifier followed by an n-tuple of constants.
In Prolog a relation identifier is referred to as a predicate; when a t
Step 1: Choose a phrase
You can create a more secure password by starting with a simple phrase. For example, let's use a quote from Ogden Nash:
"Happiness is having a scratch for every itch."
If we use the first letter of each word, and substitute 4 for "