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Update README.md #23

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49 changes: 31 additions & 18 deletions HW/1/README.md
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Expand Up @@ -23,15 +23,15 @@ There are 30 marks available and are awarded grades as follows:
###1 - Why do we represent data using binary when using computers *(1 mark)*

```
answer here
because it is easier for the computer to process as there are only two modes; on and off
```
###2 - How would we represent the number 147 in binary? *(1 mark)*
```
answer here
10010011
```
###3 - Can you convert the hexadecimal number **b5** to denary, there is a mark for you working. *(2 marks)*
```
answer here
181 - 5=5 B=176
```
###4 - Here is a function written is **pseudocode**.
```
Expand All @@ -47,12 +47,12 @@ ENDFUNCTION

(a) What type of data is **users**? **(1 mark)**
```
answer here
variable
```

(b) What type of data is returned by this function? **(1 mark)**
```
answer here
Boolean
```

##Errors
Expand All @@ -69,12 +69,12 @@ line7: OUTPT mean

(a) On which line is there a **syntax** error? **(1 mark)**
```
answer here
7
```

(b) What is meant by a **syntax** error? **(1 mark)**
```
answer here
misuse of a programming function resulting in a program crash
```

(c) Identify a logical error in the program and suggest how this might be fixed. **(2 marks)**
Expand All @@ -84,41 +84,54 @@ answer here

(d) Describe and give an example of the 3rd kind of programming error. **(2 marks)**
```
answer here
Runtime error
An error that makes the program crash during its runtime.
dividing by zero, referencing missing files, calling invalid functions, or not handling certain input correctly.
```

##Algortithms
###7 - Write an **algorithm** that if given a list of numbers could find the largest. Try to use [pseudocode](http://filestore2.aqa.org.uk/subjects/AQA-GCSE-COMPSCI-W-TRB-PSEU.PDF).
```
answer here

A= Current number
B= Next number
C= Largest number


recieve numbers
A=C
If B>C then B=C #Repeat however many times nessecary
display C


```

##Networking
###8 - Research the following methods (*topologies*) for connecting devices to a network. In each case give a description and at least 1 advantage and 1 disadvantage.

**Bus Topology (6 marks)**
```
Describe:
Describe: Uses a central 'bus' cable with other smaller outgoing wires to send data to each client.

Advantages:
Advantages: Good for Local area networking as the method is very linear

Disadvantages:
Disadvantages: There is a high limit on cable length and the number of clients that can be involved
```

**Ring Topology (6 marks)**
```
Describe:
Describe: Sends data between each client system originating from the server in a circular layout

Advantages:
Advantages: Requires a less powerful server as data is being sent to only the first client system

Disadvantages:
Disadvantages: Not robust; if a client system breaks the ones after it do the same due to the ring layout
```

**Star Topology (6 marks)**
```
Describe:
Describe: Sends data to clients from the server directly in individual pathways

Advantages:
Advantages: Minimal reliance on the client; if one system malfunctions it wont result in others doing so

Disadvantages:
Disadvantages: Requires a more powerful server to handle each client system being sent data
```