11th Class (HSSC-I) Computer SLO Based Key Point Notes
(National Book Foundation - As Federal Textbook Board, Islamabad Based on National Curriculum Pakistan 2023-2024 and Onward prescribed by Federal Board of Intermediate and Secondary Education, Islamabad, and All Pakistan Boards) (Contact WhatsApp # 03339719149 for a full book PDF Notes)
(National Book Foundation - As Federal Textbook Board, Islamabad
Based on National Curriculum Pakistan 2023-2024 and Onward prescribed by Federal Board of Intermediate and Secondary Education, Islamabad, and All Pakistan Boards)
(Contact WhatsApp # 03339719149 for a full book PDF Notes)
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👉👉👉Computer Science 11th Class Notes (Main Page)
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1. In which communication mode data can be sent and received in both directions but not simultaneously?
... Answer is B. Half duplex mode
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2. Which of the following network devices connects a network to another that uses a different protocol?
... Answer is B. Gateway
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3. Which of the following networks provides remote access to individuals and offices to their organization
... Answer is D. VAN
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4. In which topology a hub (switch) is used?
... Answer is A. Star topology
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5. Which topology is most expensive to implement?
... Answer is D. Mesh topology
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6. Which layer of the OSI Model decides which physical pathway the data should take to reach the destination?
... Answer is B. Network layer
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7. Which network layer performs security, name recognition, logging, and similar functions. :
... Answer is D. Session Layer
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8. Which of these cables transmit data using light waves?
... Answer is C. Fiber optic cable
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9. Which of these transmissions uses a start/stop bit?
... Answer is A. Asynchronous
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10. Which bits are used at the start of a class B IP?
... Answer is B. 10`
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11. Computer networks allow users to share.
... Answer is D. All
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12. The set of rules to exchange data in a communication network is called.
... Answer is A. Protocol
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13. All the following are the elements of the data communication system EXCEPT.
... Answer is D. Voltage
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14. A telephone conversation is an example of
... Answer is A. Full-duplex
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15. Television broadcast is an example of
... Answer is C. Simplex
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16.. In which type of data transmission data is transmitted block by block?
... Answer is B. Synchronous
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17. Which of the following is an example of unguided media :
... Answer is C. satellite
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18. Which type of transmission media uses light waves for transmitting information?
... Answer is B. Fiber optic cable
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19. Many networks include a central computer called.
... Answer is A. Server
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20. A lab with twenty computers and a laser printer is an example of ____________ area network
... Answer is C. Local
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21. The physical layout of connected devices in a network is called.
... Answer is A. Topology
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22. Which topology requires a central device such as a switch?
... Answer is A. Star
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23. Which of the following topologies is expensive and difficult to install
... Answer is C. Mesh
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24. The entire network goes down in which topology if the backbone cable fails?
... Answer is A. Bus
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25. How many layers does the OSI model consist of?
... Answer is A. 3
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26. Which layer is responsible for establishing, maintaining, and terminating user connection?
... Answer is D. Session
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27. The topmost layer of the OSI is called ______________. :
... Answer is A. Application
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28. The bottom layer of the OSI model is
... Answer is B. Physical
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29. Which of the following is the most important layer concerned with transmitting a stream of bits over the physical cables or wires
... Answer is B. Physical
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30. The layer that defines the formats the data uses as it is transmitted on the communication line is called ______________.
... Answer is B. Presentation layer
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31. The layer that provides services that directly support user applications is ______________.
... Answer is A. Application layer
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32. In the OSI model, encryption and decryption are functions of which layer?
... Answer is B. Presentation
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33. OSI stands for
... Answer is A. Open system interconnection
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34. Which network is made of a set of switches connected by a physical link?
... Answer is B. Circuit switched
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35. An IP address is composed of
... Answer is C. 32 bits
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36. The four numbers in an IP address are called____________.
... Answer is A. Octet
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37. Which class IP addresses were designed for large networks? :
... Answer is A. A
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38. The default mask for class A is
... Answer is A. 255.0.0.0
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39. The default mask for class B is
... Answer is D. 255.255.0.0
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40. The default mask for class C is
... Answer is C. 255.255.255.0
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1. In which communication mode data can be sent and received in both directions but not simultaneously?
--------------------------
2. Which of the following network devices connects a network to another that uses a different protocol?
----------------------
3. Which of the following networks provides remote access to individuals and offices to their organization
---------------------------
4. In which topology a hub (switch) is used?
--------------------------------
5. Which topology is most expensive to implement?
------------------------
------------------------
--------------------------
-------------------------
------------------------
----------------------
------------------------------
-------------------------
------------------------
6. Which layer of the OSI Model decides which physical pathway the data should take to reach the destination?
------------------------
7. Which network layer performs security, name recognition, logging, and similar functions. :
--------------------------
8. Which of these cables transmit data using light waves?
-------------------------
9. Which of these transmissions uses a start/stop bit?
------------------------
10. Which bits are used at the start of a class B IP?
----------------------
11. Computer networks allow users to share.
------------------------------
12. The set of rules to exchange data in a communication network is called.
-------------------------
13. All the following are the elements of the data communication system EXCEPT.
-------------------------
----------------------------
--------------------------
---------------------------
--------------------------
-------------------------
------------------------
----------------------
--------------------------
--------------------
---------------------------
--------------------
-------------------------
14. A telephone conversation is an example of
----------------------------
15. Television broadcast is an example of
--------------------------
16.. In which type of data transmission data is transmitted block by block?
---------------------------
17. Which of the following is an example of unguided media :
--------------------------
18. Which type of transmission media uses light waves for transmitting information?
-------------------------
19. Many networks include a central computer called.
------------------------
20. A lab with twenty computers and a laser printer is an example of ____________ area network
----------------------
21. The physical layout of connected devices in a network is called.
--------------------------
22. Which topology requires a central device such as a switch?
--------------------
23. Which of the following topologies is expensive and difficult to install
---------------------------
24. The entire network goes down in which topology if the backbone cable fails?
--------------------
25. How many layers does the OSI model consist of?
--------------------
--------------------
--------------------
-------------------------
--------------------
----------------------
--------------------
26. Which layer is responsible for establishing, maintaining, and terminating user connection?
--------------------
27. The topmost layer of the OSI is called ______________. :
--------------------
28. The bottom layer of the OSI model is
-------------------------
29. Which of the following is the most important layer concerned with transmitting a stream of bits over the physical cables or wires
--------------------
30. The layer that defines the formats the data uses as it is transmitted on the communication line is called ______________.
----------------------
31. The layer that provides services that directly support user applications is ______________.
--------------------------
----------------------
--------------------
--------------------
--------------------------
32. In the OSI model, encryption and decryption are functions of which layer?
----------------------
33. OSI stands for
--------------------
34. Which network is made of a set of switches connected by a physical link?
--------------------
35. An IP address is composed of
--------------------
--------------------
--------------------
---------------------------------
--------------------
----------------------
--------------------
36. The four numbers in an IP address are called____________.
--------------------
37. Which class IP addresses were designed for large networks? :
--------------------
38. The default mask for class A is
---------------------------------
39. The default mask for class B is
--------------------
40. The default mask for class C is
----------------------
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