1) Advantages of using RFID over using barcode.
These RFID have many advantages over barcode, such as they do not need to position the chips
precisely on the scanner unlike the barcode where it has to be placed right under the scanner. It
also ensures that multiple items can be scanned at once while with a barcode scanner each of
the items have to be scanned one by one as in the mall. With a RFID they can be read and
written to so data can be changed on the tag while a barcode scanner can only read the data on
the barcode so to replace the data would to be to replace the barcode
2) Advantages and disadvantages of using computer controlled robots rather than humans in car
manufacturing
Computer controlled robots are less prone to error as they are coded to repeat the same
process several times and are not likely to be “creative” and change the design as humans are
more prone to error and would be bored repeating the same process. They are also able to
work in certain areas in which it would be a risk to human health , they are also able to do the
work required from one set of codes and do not need to be retrained or “recoded” in this case.
Some disadvantages include they being very expensive to setup or buy and equally expensive to
repair, they also always follow the code given to them so if any new decision or hazard appears
they would continue their work until it out rightly stops their production. They also tend to
break or “give up on life” a lot more easily so they need to be replaced and someone has to be
hired in order to replace the broken down machine
3) Steps needed to use telephone banking without speaking to an operator
User telephones the bank telephone center. System asks for the long number on the credit / debit card /
sort code and account number / customer ID number. The user taps out on the phone keypad / speaks
the number. System asks for certain characters in a password. The user taps out the characters asked
for. System rejects the password. The user re-enters the characters. After three attempts the telephone
connection drops. System asks other security answers. The user taps it in / speaks the answer. System
asks which service you require / options given. Users tap in the number (transfer from one account to
another). System asks number of account transfer from. User taps in account number. System connects
with the bank account. System asks for number of account transfer money to. User taps in account
number. System asks amount to transfer. User taps in the amount. System asks when the transfer
should happen. The user taps in the date. System asks you to confirm it, sends a text message, send
email
4) Why computer models are used for making a bridge
A bridge is a connection between two places over a water body so when using a model we can
simulate any real life scenario without endangering any human personnel or wasting resources.
They also test a situation’s feasibility without wasting large sums of money to build a prototype.
If a model is produced of a new design their behaviours under different situations can be
simulated.
5) Benefits and drawbacks of storing membership details on a computer data base.
If membership data is stored on a computer data base then it would mean that any one on the
network can access this data making it easily accessible to anyone on the network, this also
means that data can be stored on one data base without any duplication errors that would take
up space, these could also lead to the data base being indexed making it even easier to find the
data than file system. While using them also means that the information they stored can be
stolen by hacking into the system, this also means that you can only access this data if you are
connected to the network, it also needs to constantly maintained so no data is corrupted
6) Why computer modelling is used to forecast the weather
It is used to forecast the weather to get a more accurate reading as the model would take in the
current data given to it and compare it with the data and information given to it to give a
prediction.
7) Sensors used to collect weather data
 mass airflow meter
 A barometer
 An Anemometer
 Thermistors
 Hygrometers
8) Output devices used to display the weather forecast output data for weather forecast
 Doppler radar
 radiosondes
 weather satellites
 buoys
9) Advantages and disadvantages of creating a relatable database rather than a flat file data base
Relational databases use keys to link tables, making it easy to ensure that data is consistent
across all tables. Custom software can be built based on business requirements, which can
reduce costs associated with purchasing extra licenses and subscriptions to commercial
software. Relatable Databases allow authorized users to access data, and each user can have
different access privileges. Unauthorized users should not be able to access the database. But
Relational databases can be complex to design, manage, and maintain, especially for large and
complex data sets. The relational model can be inflexible when dealing with unstructured or
semi-structured data. Relational databases can struggle with high write loads and real-time
analytics
10) Difference between primary and secondary key
A primary key is the key field used to identify each record in a database, while a secondary key is
uniquely identify rows in a table and thus can be used alternatively as primary keys
11) Describe the processing and output involved in making a booking
When making a booking or making a reservation you should open to the desired website there
they would be a link to a form in which you fill out your desired booking and send the money in
which case they would then send you the receipt or more commonly you call them and make
the booking by phone.