Sponsor Area
Mobile Telecommunication Technologies, Network Security and Internet Services
Differentiate between Radio Link and Microwave in context of wireless communication technologies.
Radio Link: Data is transmitted outward from the antenna through free space in all directions. It is a Slow means of communication.
Microwave: Data is transmitted based on a line of sight principle, faster than radio communication.
|
Specifications |
Radio |
Microwave |
|
Frequency range(Hz) |
3 x 105 to 3 x 1011 |
3 x 108 to 3 x 1011 |
|
Wavelength |
103 to 10-3 meters |
1 to 10-3 meters |
|
Applications |
Mobile,AM/FM radio, television |
radar, satellite and space communication |
Amit used a pen drive to copy files from his friend’s laptop to his office computer. Soon his office computer started abnormal functioning. Sometimes it would restart by itself and sometimes it would stop functioning totally. Which of the following options out of (i) to (iv), would have caused the malfunctioning of the computer. Justify the reason for your chosen option:
-
Computer Worm
-
Computer Virus
-
Computer Bacteria
-
Trojan Horse
B.
Computer Virus
D.
Trojan Horse
(i) Pen drive containing Computer Virus / Trojan Horse was used before the abnormal functioning started, which might have corrupted the system files.
(ii)Computer Virus/ Trojan Horse affects the system files and start abnormal functioning in the computer
Jai is an IT expert and a freelancer. He recently used his skills to access the Administrator password for the network server of Megatech Corpn Ltd. and provided confidential data of the organization to its Director, informing him about the vulnerability of their network security. Out of the following options (i) to (iv), which one most appropriately defines Jai. Justify the reason for your chosen option:
-
Hacker
-
Cracker
-
Operator
-
Network Admin
A.
Hacker
A Hacker is a person who breaks into the network of an organization without any malicious intent.
Janish Khanna used a pen drive to copy files from his friend’s laptop to his office computer. Soon his office computer started abnormal functioning. Sometimes it would restart by itself and sometimes it would stop different applications running on it. Which of the following options out of (i) to (iv), would have caused the malfunctioning of the computer? Justify the reason for your chosen option:
-
Computer Virus
-
Spam Mail
-
Computer Bacteria
-
Trojan Horse
A.
Computer Virus
D.
Trojan Horse
Computer virus can spread through external media such as CDs, pen drive etc. It is designed to infect the host program and gain control over the system without the owner’s knowledge.
Sponsor Area
Mock Test Series
Mock Test Series