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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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?
Establishing a virtual connection is virtually equivalent to
How many digits of the network user Address are known as the DNIC (Data Network Identiication Code) ?
Which of the following digits are known as the area code of the network user address (NUA) ?
Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size ?
A station in a network forward incoming packets by placing them on its shortest output queue. What routing algorithm is being used ?
Which of the following program is used to copy files to or from another using time sharing system over a single link ?
Working of the WAH generally involves
Start and stop bits are used in serial communication for
In the carrier sense network, if prevailing condition is a 'channel busy', then technique used is
The systems that can be used in both priority and non-priority modes is
Which of the following measures the number of lost or garbled messages as a fraction of the total sent in the sampling period ?
A field in the Ethernet message packet is
A bridge has access to which address of a station on the same network ?