IT-Explain 🦾

Question 28 : 🔥🦾 Flow control between source and destination -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 27 : 🔥🦾 Flow control between two adjacent network nodes -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 26 : 🔥🦾 deals with damaged, lost ,and duplicate frames -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 25 : 🔥🦾 Control of congestion : -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 24 : 🔥🦾 Ensures pieces all arrive correctly at receiver -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 23 : 🔥🦾 Layer has Protocols /standrads  : -------------------------------------------------------------- A. Network B. Data link C. Physical D. Transport

Question 22 : 🔥🦾 If change of lower layers does affect higher layers has a long as their interfaces are the same -------------------------------------------------------------- A. True B. False

Question 21 : 🔥🦾 Lowest three layers deal with services -------------------------------------------------------------- A. True B. False

Question 20 : 🔥🦾 Higher layers deal more with end to end communications : -------------------------------------------------------------- A. True B. False

Question 19 : 🔥🦾 Each layer performs same functions and communicates with the layers directly above and below it -------------------------------------------------------------- A. True B. False

Question 18 : 🔥🦾 Only the communicating devices are involved when passing messages : -------------------------------------------------------------- A. Ring B. Bus C. Star

Question 17 : 🔥🦾 Which topology  disadvantages " More time on relaying messages  " -------------------------------------------------------------- A. Ring B. Bus C. Star

Question 16 : 🔥🦾 Control centralised : -------------------------------------------------------------- A. Ring B. Bus C. Star

Question 15 : 🔥🦾 LAN Can covers  : -------------------------------------------------------------- A. Country B. Group of buildings C. City

Question 14 : 🔥🦾 Osi is not international organization for standardization -------------------------------------------------------------- A. True B. False

Question 13 : 🔥🦾 Analog signals can be distinguished by : -------------------------------------------------------------- A. Amplitude B. Frequency C. Phase  D. All of the above

Question 12 : 🔥🦾 Bad things Cables  : -------------------------------------------------------------- A. Resistance B. Capacitance C. Reflection D. A+B E.None

Question 11 : 🔥🦾 Uses start and stop bits so receiver knows when data starts : -------------------------------------------------------------- A. Asynchronous transmission B. synchronous transmission C. Parallel transmission

Question 10 : 🔥🦾 Serial transmission : -------------------------------------------------------------- A. Faster  than parallel B. More reliable and more expensive for longer  distances C. More reliable and less  expensive for short  distances D. Parallel faster serial transmission

Question 9 : 🔥🦾 Parallel transmission  : -------------------------------------------------------------- A. Lowe  bit rate B. Transmits a group of bits simultaneously C. Good for long  distances only D. Synchronisation problem over lower  distances