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Computer Networks –
Medium Difficulty
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#1. How many usable host addresses are available in an IPv4 /26 subnet?
#2. A switch transmits a 4000-bit frame on a 100 Mb/s link. Ignoring propagation delay, what is serialization time?
#3. Path A has 5 router hops and Path B has 7 hops with equal link rates and delays. Which path generally has lower latency?
#4. A Layer 2 switch has 48 access ports, each in full duplex at 1 Gb/s. What is the aggregate bidirectional capacity?
#5. For Ethernet MTU 1492 bytes with IPv4 (20-byte header) and TCP (20-byte header), what is the maximum TCP payload per packet?
#6. How many usable host addresses are available in an IPv4 /28 subnet?
#7. A switch transmits a 12000-bit frame on a 10 Mb/s link. Ignoring propagation delay, what is serialization time?
#8. Path A has 3 router hops and Path B has 5 hops with equal link rates and delays. Which path generally has lower latency?
#9. A Layer 2 switch has 16 access ports, each in full duplex at 1 Gb/s. What is the aggregate bidirectional capacity?
#10. For Ethernet MTU 9000 bytes with IPv4 (20-byte header) and TCP (20-byte header), what is the maximum TCP payload per packet?
#11. How many usable host addresses are available in an IPv4 /27 subnet?
#12. A switch transmits a 4000-bit frame on a 10 Mb/s link. Ignoring propagation delay, what is serialization time?
#13. Path A has 5 router hops and Path B has 8 hops with equal link rates and delays. Which path generally has lower latency?
#14. A Layer 2 switch has 8 access ports, each in full duplex at 1 Gb/s. What is the aggregate bidirectional capacity?
#15. For Ethernet MTU 1492 bytes with IPv4 (20-byte header) and TCP (20-byte header), what is the maximum TCP payload per packet?
#16. How many usable host addresses are available in an IPv4 /24 subnet?
#17. A switch transmits a 8000-bit frame on a 10 Mb/s link. Ignoring propagation delay, what is serialization time?
#18. How many point-to-point links are required for a full-mesh topology with 8 nodes?
#19. Which topology has each node connected to exactly two neighbors and forms a closed loop?
#20. In a star topology, failure of which component can disconnect all nodes simultaneously?
#21. Which topology generally offers the highest path redundancy between nodes?
#22. How many point-to-point links are required for a full-mesh topology with 8 nodes?
#23. Which topology has each node connected to exactly two neighbors and forms a closed loop?
#24. In a star topology, failure of which component can disconnect all nodes simultaneously?
#25. Which topology generally offers the highest path redundancy between nodes?
#26. How many point-to-point links are required for a full-mesh topology with 6 nodes?
#27. Which topology has each node connected to exactly two neighbors and forms a closed loop?
#28. In a star topology, failure of which component can disconnect all nodes simultaneously?
#29. Which topology generally offers the highest path redundancy between nodes?
#30. How many point-to-point links are required for a full-mesh topology with 8 nodes?
#31. Which topology has each node connected to exactly two neighbors and forms a closed loop?
#32. In a star topology, failure of which component can disconnect all nodes simultaneously?
#33. Which topology generally offers the highest path redundancy between nodes?
#34. How many point-to-point links are required for a full-mesh topology with 8 nodes?
#35. Which network type is typically limited to a building or campus and managed by one organization?
#36. Which technology is commonly used by service providers to interconnect distant city offices over a WAN?
#37. The global public internetwork connecting autonomous systems is best described as:
#38. A branch LAN has 40 users, each averaging 5 Mb/s during peak. What is approximate aggregate demand?
#39. Which network type is typically limited to a building or campus and managed by one organization?
#40. Which technology is commonly used by service providers to interconnect distant city offices over a WAN?
#41. The global public internetwork connecting autonomous systems is best described as:
#42. A branch LAN has 20 users, each averaging 10 Mb/s during peak. What is approximate aggregate demand?
#43. Which network type is typically limited to a building or campus and managed by one organization?
#44. Which technology is commonly used by service providers to interconnect distant city offices over a WAN?
#45. The global public internetwork connecting autonomous systems is best described as:
#46. A branch LAN has 80 users, each averaging 5 Mb/s during peak. What is approximate aggregate demand?
#47. Which network type is typically limited to a building or campus and managed by one organization?
#48. Which technology is commonly used by service providers to interconnect distant city offices over a WAN?
#49. The global public internetwork connecting autonomous systems is best described as:
#50. A branch LAN has 20 users, each averaging 5 Mb/s during peak. What is approximate aggregate demand?
#51. Which network type is typically limited to a building or campus and managed by one organization?
#52. In the OSI model, which layer is primarily responsible for end-to-end transport and reliability?
#53. IP addressing and routing are primarily functions of which OSI layer?
#54. A TCP segment is encapsulated inside which PDU at the network layer?
#55. Which protocol pair best maps to TCP/IP Transport and Internet layers, respectively?
#56. In TCP/IP architecture, user applications like HTTP and DNS operate at which layer?
#57. In the OSI model, which layer is primarily responsible for end-to-end transport and reliability?
#58. IP addressing and routing are primarily functions of which OSI layer?
#59. A TCP segment is encapsulated inside which PDU at the network layer?
#60. Which protocol pair best maps to TCP/IP Transport and Internet layers, respectively?
#61. In TCP/IP architecture, user applications like HTTP and DNS operate at which layer?
#62. In the OSI model, which layer is primarily responsible for end-to-end transport and reliability?
#63. IP addressing and routing are primarily functions of which OSI layer?
#64. A TCP segment is encapsulated inside which PDU at the network layer?
#65. Which protocol pair best maps to TCP/IP Transport and Internet layers, respectively?
#66. In TCP/IP architecture, user applications like HTTP and DNS operate at which layer?
#67. In the OSI model, which layer is primarily responsible for end-to-end transport and reliability?
#68. IP addressing and routing are primarily functions of which OSI layer?
#69. What is the primary function of an intrusion detection system (IDS)?
#70. Which device is primarily preventive rather than detective?
#71. Endpoint detection and response (EDR) mainly monitors:
#72. A signature-based IDS is MOST likely to miss which threat type?
#73. What is the primary function of an intrusion detection system (IDS)?
#74. Which device is primarily preventive rather than detective?
#75. Endpoint detection and response (EDR) mainly monitors:
#76. A signature-based IDS is MOST likely to miss which threat type?
#77. What is the primary function of an intrusion detection system (IDS)?
#78. Which device is primarily preventive rather than detective?
#79. Endpoint detection and response (EDR) mainly monitors:
#80. A signature-based IDS is MOST likely to miss which threat type?
#81. What is the primary function of an intrusion detection system (IDS)?
#82. Which device is primarily preventive rather than detective?
#83. Endpoint detection and response (EDR) mainly monitors:
#84. A signature-based IDS is MOST likely to miss which threat type?
#85. Which option best represents the CIA triad?
#86. Port scanning is primarily used to:
#87. Which activity is part of vulnerability assessment rather than exploitation?
#88. A web vulnerability scanner most directly helps identify:
#89. In security testing, penetration testing is best described as:
#90. Which option best represents the CIA triad?
#91. Port scanning is primarily used to:
#92. Which activity is part of vulnerability assessment rather than exploitation?
#93. A web vulnerability scanner most directly helps identify:
#94. In security testing, penetration testing is best described as:
#95. Which option best represents the CIA triad?
#96. Port scanning is primarily used to:
#97. Which activity is part of vulnerability assessment rather than exploitation?
#98. A web vulnerability scanner most directly helps identify:
#99. In security testing, penetration testing is best described as:
#100. Which option best represents the CIA triad?
