This A level Computer Networks - Data Communication and Network Security Quiz 3 quiz contains 15 multiple choice questions designed to help you revise and test your A level Computer Networks - Data Communication and Network Security Quizzes knowledge. Select an answer for each question and click “Submit Answer” to see instant feedback. Take your time and try to score as high as possible!
Quiz 3 of Computer Networks in regards to Data communication and Network security may be focusing on Network security. All networks require a data connection in order for information to be shared throughout the network. Also, this network needs a security system that does not allow foreigners to join the network or copy data from the network. This is where we get to network security.
Network security involves access control, virus and antivirus software, application security, network analytics, and so on. It, therefore, protects your network and data from breaches, intrusions, and other threats like viruses and other malware. We can therefore see that strong network security helps reduce the risk of data loss, theft, and sabotage of information/data.
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Question 1 of 15
It is desired to send a sequence of computer screen images over an optical fiber. The screen is 480 x 640 pixels, each pixel being 24 bits. There are 60 screen images per second. How much bandwidth is needed, and how many microns of wavelenth are needed for this band at 1.30 microns?
Question 2 of 15
Establishing a virtual connection is virtually equivalent to
Question 3 of 15
How many digits of the network user Address are known as the DNIC (Data Network Identiication Code) ?
Question 4 of 15
Which of the following digits are known as the area code of the network user address (NUA) ?
Question 5 of 15
Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size ?
Question 6 of 15
A station in a network forward incoming packets by placing them on its shortest output queue. What routing algorithm is being used ?
Question 7 of 15
Which of the following program is used to copy files to or from another using time sharing system over a single link ?
Question 8 of 15
Working of the WAH generally involves
Question 9 of 15
Slotted ALOHA
Question 10 of 15
Start and stop bits are used in serial communication for
Question 11 of 15
In the carrier sense network, if prevailing condition is a 'channel busy', then technique used is
Question 12 of 15
The systems that can be used in both priority and non-priority modes is
Question 13 of 15
Which of the following measures the number of lost or garbled messages as a fraction of the total sent in the sampling period ?
Question 14 of 15
A field in the Ethernet message packet is
Question 15 of 15
A bridge has access to which address of a station on the same network ?
In this quiz, we will be looking into computer networks based on Data commu...
These quizzes will give you a better understanding of computer networking a...