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(C4, C6, C02, C03, P03 and P05) (b) Suppose an 802.11b station is configured to always reserve the channel with the RTS/CTS sequence. Suppose this

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(C4, C6, C02, C03, P03 and P05) (b) Suppose an 802.11b station is configured to always reserve the channel with the RTS/CTS sequence. Suppose this station suddenly wants to transmit 1000 bytes of data, and all other stations are idle at this time. As a function of SIFS and DIFS, and ignoring the propagation delay and assuming no bit errors, calculate the time required to transmit the frame and receive the acknowledgment. lAnggap stesen 802.1 1b diatur untuk selalu menyediakan saluran dengan jujukan RTS/CTS. Anggapkan stesen ini secura tiba-tiba ingin meryebar 1000 bytes data, dan semua stesen yang lain tidak aktif pada ka Sehugai fungsi kepada SIFS dan DIFS, dan membiarkan perambatan tunda dan mengandaikan tiada kesalahan bit, hitungkan masa yang diperlukan untuk menyebar rangka and menerima pengukuan. (6 Marks/markah) c4, C6, C02, C03, P03 and P05) (c) In wireless networks, the IEEE standardized the use of the carrier sense multiple access with collision avoidance CSMA/CA technique to prevent collision situation (two nodes from sending at the same time). CSMA/CA is failed to prevent the collision in some situations. One of these situations is as the hidden terminal problem; lustrate by an example the hidden terminal problem Dalam jaringan tanpa wayar, IEEE menstandardkan kegunaan mengesan pembawa akses yang berbagai-bagai dengan teknik CSMA/CA pencegahan perlanggaran untuk menghalang situasi erlanggaran dua nod dari menghantar pada masa yang sama). CSMA/CA telah gagal untuk menghalang perlunggan dalam sesetengah situasi. Salah satu situasi adalah masalah terminal tersembunyi; Gumbarkan dengan contoh masalah terminal tersembunyi.) (8 Marks/markah) (C4, C6, C02, C03, P03 and P05) (b) Suppose an 802.11b station is configured to always reserve the channel with the RTS/CTS sequence. Suppose this station suddenly wants to transmit 1000 bytes of data, and all other stations are idle at this time. As a function of SIFS and DIFS, and ignoring the propagation delay and assuming no bit errors, calculate the time required to transmit the frame and receive the acknowledgment. lAnggap stesen 802.1 1b diatur untuk selalu menyediakan saluran dengan jujukan RTS/CTS. Anggapkan stesen ini secura tiba-tiba ingin meryebar 1000 bytes data, dan semua stesen yang lain tidak aktif pada ka Sehugai fungsi kepada SIFS dan DIFS, dan membiarkan perambatan tunda dan mengandaikan tiada kesalahan bit, hitungkan masa yang diperlukan untuk menyebar rangka and menerima pengukuan. (6 Marks/markah) c4, C6, C02, C03, P03 and P05) (c) In wireless networks, the IEEE standardized the use of the carrier sense multiple access with collision avoidance CSMA/CA technique to prevent collision situation (two nodes from sending at the same time). CSMA/CA is failed to prevent the collision in some situations. One of these situations is as the hidden terminal problem; lustrate by an example the hidden terminal problem Dalam jaringan tanpa wayar, IEEE menstandardkan kegunaan mengesan pembawa akses yang berbagai-bagai dengan teknik CSMA/CA pencegahan perlanggaran untuk menghalang situasi erlanggaran dua nod dari menghantar pada masa yang sama). CSMA/CA telah gagal untuk menghalang perlunggan dalam sesetengah situasi. Salah satu situasi adalah masalah terminal tersembunyi; Gumbarkan dengan contoh masalah terminal tersembunyi.) (8 Marks/markah)

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