Knowledge Booster: S & T Telecom Edition (11 Oct 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. Codal life of batteries for walkie-talkie sets being used by Drivers and Guards is ____ CBT ASTE 2025 ड्राइवरों और गार्डों द्वारा उपयोग किए जाने वाले वॉकी-टॉकी सेट की बैटरी का औसत जीवनकाल ____ है। CBT ASTE 2025
- A) 6years
- B) 2years
- C) 1years
- D) 5years
Correct Answer: 1years
Explanation: Explanation : Walkie-Talkie (Driver–Guard VHF Set)
Q2. What is not true about Internet Protocol Multi-Protocol Label Switching (IP-MPLS)? इंटरनेट प्रोटोकॉल मल्टी-प्रोटोकॉल लेबल स्विचिंग (IP-MPLS) के बारे में क्या सच नहीं है?
- A) It is a routing technique in data networks that directs data from one node to the next node based on labels
- B) The labels are attached to the data packets for transport of data
- C) The labels identify the established paths between end points
- D) It cannot encapsulate the data packets of different network protocols
Correct Answer: It cannot encapsulate the data packets of different network protocols
Explanation: Explanation :
Q3. OSPF is an ......... Gateway routing protocol OSPF एक गेटवे रूटिंग प्रोटोकॉल है।
- A) Exterior
- B) Anterior
- C) Posterior
- D) Interior
Correct Answer: Interior
Explanation: Explanation : OSPF (Open Shortest Path First) is an . It is used within an autonomous system (AS) to manage routing information.
Q4. Which of the following transmission represents one to many valid Ethernet transmissions? निम्नलिखित में से कौन सा ट्रांसमिशन एक से कई वैध ईथरनेट ट्रांसमिशन का प्रतिनिधित्व करता है?
- A) Simulcast
- B) Simplex
- C) Unicast
- D) Broadcast
Correct Answer: Broadcast
Explanation: Explanation :
Q5. In LTE Communication system, the transport of IP data traffic between the User Equipment (UE) and the External Networks is done by which of the following sub-system/ entity? एलटीई संचार प्रणाली में, उपयोगकर्ता उपकरण (यूई) और बाह्य नेटवर्क के बीच आईपी डेटा ट्रैफ़िक का परिवहन निम्नलिखित में से किस उप-प्रणाली/इकाई द्वारा किया जाता है?
- A) IP Multimedia Core Network Subsystem (IMS)
- B) Mobility Management Entity (MME)
- C) Packet Data Network Gateway (PDN-GW)
- D) Serving Gateway (S-GW)
Correct Answer: Packet Data Network Gateway (PDN-GW)
Explanation: Explanation : The deal with the user plane. They transport the IP data traffic between the User Equipment (UE) and the external networks.The MME deals with the control plane. It handles the signalling related to mobility and security for E-UTRAN access. The MME is responsible for the tracking and the paging of UE in idle-mode.IMS is an all-IP system designed to assist mobile operators deliver next generation interactive and interoperable services, cost-effectively, over an architecture providing the flexibility of the Internet.
Q6. IPv6 Address has how many bits length IPv6 IPv6 पते की लंबाई कितने बिट्स की होती है?
- A) 32-bits
- B) 48- bits
- C) 64-bits
- D) 128-bits
Correct Answer: 128-bits
Explanation: Explanation :
Q7. What are the optical windows used in Single Mode Optic fibre? सिंगल मोड ऑप्टिक फाइबर में उपयोग की जाने वाली ऑप्टिकल विंडो क्या हैं?
- A) 850nm & 1310 nm
- B) 850nm & 1550 nm
- C) 1310nm & 1550 nm
- D) None of the given options
Correct Answer: 1310nm & 1550 nm
Explanation: Explanation :
Q8. In Video Surveillance System at Stations the recording shall be stored for ______? स्टेशनों पर वीडियो निगरानी प्रणाली में रिकॉर्डिंग को ______ तक संग्रहीत किया जाएगा?
- A) 30 days at 25FPS Full HD resolution of Full HD cameras
- B) 45 days at 25FPS Full HD resolution of Full HD cameras
- C) 45 days at 30FPS Full HD resolution of Full HD cameras
- D) 60 days at 30FPS Full HD resolution of Full HD cameras
Correct Answer: 30 days at 25FPS Full HD resolution of Full HD cameras
Explanation: Explanation : The Recording shall be stored for at least 30 days at 25 FPS Full HD resolution for Full HD Cameras and 25 FPS Ultra HD resolution for 4K UHD Cameras with H.265 or higher Video Compression
Q9. As specified in IR- Telecom Manual-2021 while planning for cabling, keeping in mind future expansions/ requirements, what is the desirable minimum percentage (%) of spare conductors to be kept in all Telecom Cables (Quad/PIJF) carrying 5 or more pairs of conductors? आईआर-टेलीकॉम मैनुअल-2021 में निर्दिष्ट अनुसार, केबलिंग की योजना बनाते समय, भविष्य के विस्तार/आवश्यकताओं को ध्यान में रखते हुए, 5 या अधिक जोड़ी कंडक्टर ले जाने वाले सभी टेलीकॉम केबलों (क्वाड/पीआईजेएफ) में अतिरिक्त कंडक्टरों का वांछनीय न्यूनतम प्रतिशत (%) क्या होना चाहिए?
- A) 10%
- B) 20%
- C) 25%
- D) 30%
Correct Answer: 25%
Explanation: Explanation : It will be generally desirable to leave 25% or more conductors spare for all cables carrying 5 or more pairs of conductors for future expansions as codal life of these cables are very high.cable markers to be provided at every 50 meters.
Q10. 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 :-
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