Knowledge Booster: S & T Telecom Edition (23 Sep 2026)
Welcome to today's S & T Telecom Knowledge Booster! We've handpicked 10 essential questions from our database to help you sharpen your skills. Dive in and test your knowledge!
Q1. Emergency sockets are also to be provided at ____________. ASTE 70% 2025 ____________ पर आपातकालीन सॉकेट भी उपलब्ध कराए जाने हैं। ASTE 70% 2025
- A) isolators in yards
- B) LC gates
- C) both ends of major bridges
- D) All the options
Correct Answer: All the options
Explanation: Explanation : track route for establishing communication between train crew (in case
Q2. As per RDSO specification IRS:S 93/96, VRLA batteries / cells shall be charged at a constant voltage of आरडीएसओ विनिर्देश आईआरएस:एस 93/96 के अनुसार, वीआरएलए बैटरी/सेल को एक स्थिर वोल्टेज पर चार्ज किया जाना चाहिए।
- A) 2.00V
- B) 2.15V
- C) 2.20V
- D) 2.25V
Correct Answer: 2.25V
Explanation: Explanation :
Q3. Which of the following devices is used to connect two or more different Networks? निम्नलिखित में से किस उपकरण का उपयोग दो या दो से अधिक भिन्न नेटवर्कों को जोड़ने के लिए किया जाता है?
- A) Switch
- B) Hub
- C) Repeater
- D) Gateway
Correct Answer: Gateway
Explanation: Explanation : A device used to connect two or more different networks is called Gateway. It is a network node used in telecommunications that connects two networks with different transmission protocols together.,
Q4. Class B network supports which network and which hosts क्लास बी नेटवर्क किन नेटवर्क और किन होस्ट को सपोर्ट करता है?
- A) 128; 16,777,216
- B) 2097; 152,256
- C) 4096; 128,000
- D) 16,384; 65,536
Correct Answer: 16,384; 65,536
Explanation: Explanation : :
Q5. What is the value of default administrative distance for a static route in a Data Network? डेटा नेटवर्क में स्टैटिक रूट के लिए डिफ़ॉल्ट प्रशासनिक दूरी का मान क्या है?
- A) 1
- B) 0
- C) 255
- D) 120
Correct Answer: 1
Explanation: Explanation :
Q6. ITU compatible 2048 Kbps digital stream consists of _____________number of analogue voice /data channels. आईटीयू संगत 2048 केबीपीएस डिजिटल स्ट्री म में _____________संख्या में एनालॉग वॉयस/डेटा चैनल होते हैं।
- A) 30
- B) 32
- C) 60
- D) 24
Correct Answer: 30
Explanation: Explanation : This equipment shall multiplex 30 analogue and/or data channel to 2048 Kbps ITU compatible digital stream on transmit side and on receive side, it shall demultiplex ITU compatible 2048 Kbps digital stream to 30 analogue voice /data channels.
Q7. IP telephony uses ________protocol for VoIP based telephone exchanges आईपी टेलीफोनी वीओआईपी आधारित टेलीफोन एक्सचेंजों के लिए ________ प्रोटोकॉल का उपयोग करती है।
- A) UDP
- B) TCP
- C) SIP
- D) H.265
Correct Answer: SIP
Explanation: Explanation : IP telephony uses the for VoIP-based telephone exchanges. SIP is a signaling protocol used to initiate, maintain, and terminate multimedia communication sessions, including voice, video, and messaging applications.
Q8. Scattering and absorption of light signal causes प्रकाश संकेतों के प्रकीर्णन और अवशोषण के कारण
- A) Total internal reflection
- B) Attenuation
- C) Gain to the signal
- D) Dispersion
Correct Answer: Attenuation
Explanation: Explanation : Both scattering and absorption contribute to the overall attenuation of the light signal as it travels through the optical fiber, impacting the efficiency and range of optical communication systems.
Q9. Mechanical splicing is used for _____________. ASTE 70% 2025 मैकेनिकल स्प्लिसिंग का उपयोग ____________ के लिए किया जाता है। ASTE 70% 2025
- A) jointing of 6 quad cable
- B) jointing of switchboard cable
- C) joining OFC cable
- D) none of the options
Correct Answer: joining OFC cable
Explanation: Explanation : Following types of techniques shall be used for splicing of fibres :-
Q10. What are the units for measurement of Optical Power and Optical Loss? प्रकाशीय शक्ति और प्रकाशीय हानि को मापने की इकाइयाँ क्या हैं?
- A) Optical Power‐dB and Optical Loss‐dBm
- B) Optical Power‐AH and Optical Loss‐Mho
- C) Optical Power‐dBm and Optical Loss‐dB
- D) Optical Power‐KWh and Optical Loss‐KVA
Correct Answer: Optical Power‐dBm and Optical Loss‐dB
Explanation: Explanation :
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