 
			 
			MCQOPTIONS
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				This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. | Noise is _____ in nature. | 
| A. | Random | 
| B. | Systematic | 
| C. | Random or Systematic | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |
| 2. | Which tells about low level transmission and framing? | 
| A. | V series | 
| B. | X series | 
| C. | G series | 
| D. | Q series | 
| Answer» D. Q series | |
| 3. | Gaussian process is a | 
| A. | Wide sense stationary process | 
| B. | Strict sense stationary process | 
| C. | All of the mentioned | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |
| 4. | The services provided by ISDN | 
| A. | Bearer service | 
| B. | Teleservice | 
| C. | Secondary service | 
| D. | All of the mentioned | 
| Answer» E. | |
| 5. | Stochastic process are | 
| A. | Random in nature | 
| B. | Are function of time | 
| C. | Random in nature and are a function of time | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |
| 6. | S-interface is a _______ bus. | 
| A. | Two wire bus | 
| B. | Four wire bus | 
| C. | Single wired bus | 
| D. | None of the mentioned | 
| Answer» C. Single wired bus | |
| 7. | Which uses TCP? | 
| A. | Simple mail transfer protocol | 
| B. | Simple network management protocol | 
| C. | Simple mail transfer & network management protocol | 
| D. | None of the mentioned | 
| Answer» B. Simple network management protocol | |
| 8. | Attenuation is a function of | 
| A. | Channel length | 
| B. | Transmission media | 
| C. | Signal frequencies | 
| D. | All of the mentioned | 
| Answer» E. | |
| 9. | Packet switched connection is provided for | 
| A. | Voice | 
| B. | Data | 
| C. | Voice & Data | 
| D. | None of the mentioned | 
| Answer» C. Voice & Data | |
| 10. | Attributes of ISDN have | 
| A. | Definition | 
| B. | Allowable values | 
| C. | Definition & Allowable values | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |
| 11. | The radiation loss increases as | 
| A. | Frequency increases | 
| B. | Frequency decreases | 
| C. | Does not depend on frequency | 
| D. | None of the mentioned | 
| Answer» B. Frequency decreases | |
| 12. | Which tells about signalling? | 
| A. | V series | 
| B. | X series | 
| C. | G series | 
| D. | Q series | 
| Answer» E. | |
| 13. | Stochastic processes are | 
| A. | Strict sense stationary process | 
| B. | Wide sense stationary process | 
| C. | All of the mentioned | 
| D. | None of the mentioned | 
| Answer» C. All of the mentioned | |