MCQOPTIONS
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MCQOPTIONS
This section includes 70 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Networks Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
When the value of HLEN field in TCP is 5, there are_______ bytes of options. |
| A. | 0 |
| B. | 20 |
| C. | 40 |
| D. | None of the above |
| Answer» B. 20 | |
| 52. |
The length of the sequence number field in TCP is _______ byte(s). |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | None of the above |
| Answer» D. None of the above | |
| 53. |
The length of the acknowledgment number field in TCP is _______ byte(s). |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | None of the above |
| Answer» D. None of the above | |
| 54. |
The length of the window size field in TCP is _______ byte(s). |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | None of the above |
| Answer» C. 4 | |
| 55. |
The natural mask for class D is _______________. |
| A. | 255.255.255.0. |
| B. | 255.255.0.0 |
| C. | 255.0.0.0 |
| D. | None of the above |
| Answer» E. | |
| 56. |
The natural mask for class E is _______________. |
| A. | 255.255.255.0. |
| B. | 255.255.0.0 |
| C. | 255.0.0.0 |
| D. | None of the above |
| Answer» E. | |
| 57. |
Using a host address 195.21.43.65 and the mask 255.255.255.192, the subnetwork address is ___________ |
| A. | 195.21.43.0 |
| B. | 195.21.0.0. |
| C. | 195.21.43.64 |
| D. | None of the above |
| Answer» D. None of the above | |
| 58. |
Using a host address 140.78.3.45 and the mask 255.255.255.0, the subnetwork address is ___________. |
| A. | 140.70.0.0 |
| B. | 140.78.3.0 |
| C. | 140.78.0.0 |
| D. | None of the above |
| Answer» C. 140.78.0.0 | |
| 59. |
Using a host address 112.8.13.145 and the mask 255.255.0.0, the subnetwork address is ___________. |
| A. | 112.8.13.0 |
| B. | 112.8.0.0 |
| C. | 112.0.0.0 |
| D. | None of the above |
| Answer» C. 112.0.0.0 | |
| 60. |
IP addresses without subnetting have _________ level(s) of hierarchy. |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | None of the above |
| Answer» C. 1 | |
| 61. |
IP addresses with subnetting have _________ level(s) of hierarchy. |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | None of the above |
| Answer» B. 2 | |
| 62. |
Masking can be used only in _________ class(es). |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | None of the above |
| Answer» B. 2 | |
| 63. |
Masking is not used in class(es) ___________. |
| A. | A and B |
| B. | B and C |
| C. | C and D |
| D. | D and E |
| Answer» E. | |
| 64. |
The length of an IP header is _________ bytes. |
| A. | 20 |
| B. | 20-40 |
| C. | 20-60 |
| D. | None of the above |
| Answer» D. None of the above | |
| 65. |
If the value of HLEN in an IP packet is 0101, the header is _________ long. |
| A. | 5 |
| B. | 20 |
| C. | 60 |
| D. | None of the above |
| Answer» C. 60 | |
| 66. |
If the value of HLEN in an IP packet is 1100, the option field is _________ long. |
| A. | 28 |
| B. | 20 |
| C. | 40 |
| D. | None of the above |
| Answer» B. 20 | |
| 67. |
The field in the IP packet header that defines the number of hops a packet can travel before being dropped is called ___________. |
| A. | Flags |
| B. | Time to live |
| C. | Offset |
| D. | None of the above |
| Answer» C. Offset | |
| 68. |
The protocol used to report a problem in the IP packet is called _______. |
| A. | IGMP |
| B. | ICMP |
| C. | ARP |
| D. | None of the above |
| Answer» C. ARP | |
| 69. |
The size of the header in the UDP packet is _________ bytes. |
| A. | 8 |
| B. | 16 |
| C. | 4 |
| D. | None of the above |
| Answer» B. 16 | |
| 70. |
The natural mask for class C is _______________. |
| A. | 255.255.255.0. |
| B. | 255.255.0.0 |
| C. | 255.0.0.0 |
| D. | None of the above |
| Answer» B. 255.255.0.0 | |