Computer Architecture And Organization Set 6

Computer Science Engineering (CSE)

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This set of Computer Architecture and Organization Multiple Choice Questions & Answers (MCQs) focuses on Computer Architecture And Organization Set 6

Q1 | Which tells about low level transmission and framing?
  • v series
  • x series
  • g series
  • q series
Answer: g series
Explaination:
g series tells about level transmission, modulation and framing.
Q2 | Which tells about signalling?
  • v series
  • x series
  • g series
  • q series
Answer: q series
Explaination:
q series tells about signalling.
Q3 | An interconnected collection of piconet is called                        
  • scatternet
  • micronet
  • mininet
  • multinet
Answer: scatternet
Explaination:
piconet is the basic unit of a bluetooth system having a master node and upto seven active slave nodes. a collection of piconets is called scatternet and a slave node of a piconet may act as a master in a piconet that is part of the scatternet.
Q4 | Bluetooth is the wireless technology for
  • local area network
  • personal area network
  • metropolitan area network
  • wide area network
Answer: personal area network
Explaination:
bluetooth is a wireless technology used to create a wireless personal area network for data transfer up to a distance
Q5 | Bluetooth uses                      
  • frequency hopping spread spectrum
  • orthogonal frequency division multiplexing
  • time division multiplexing
  • channel division multiplexing
Answer: frequency hopping spread spectrum
Explaination:
frequency hopping spread spectrum is a method of transmitting radio signals by rapidly changing the carrier frequency and is controlled by the codes known to the sender and receiver only.
Q6 | Unauthorised access of information from a wireless device through a bluetooth connection is called                    
  • bluemaking
  • bluesnarfing
  • bluestring
  • bluescoping
Answer: bluesnarfing
Explaination:
unauthorised access of information from a wireless device through a bluetooth connection is called bluesnarfing. it is done through exploiting the vulnerabilities of the bluetooth device to steal the transmitted information.
Q7 | What is A2DP (advanced audio distribution profile)?
  • a bluetooth profile for streaming audio
  • a bluetooth profile for streaming video
  • a bluetooth profile for security
  • a bluetooth profile for file management
Answer: a bluetooth profile for streaming audio
Explaination:
a2dp stands for advanced audio distribution profile is a transfer standard use to transmit high definition audio through bluetooth. it is mainly used in bluetooth speakers and wireless headphones.
Q8 | Bluetooth supports                
  • point-to-point connections
  • point-to-multipoint connection
  • both point-to-point connections and point- to-multipoint connection
  • multipoint to point connection
Answer: both point-to-point connections and point- to-multipoint connection
Explaination:
in bluetooth, each slave node communicates with the master of the piconet independently i.e. each master-slave connection is independent. the slave is not allowed to communicate with other slaves directly.
Q9 | A scatternet can have maximum
  • 10 piconets
  • 20 piconets
  • 30 piconets
  • 40 piconets
Answer: 10 piconets
Explaination:
a scatternet can have maximum of 10 piconets and minimum of 2 piconets. to connect these piconets, a slave node of one piconet may act as a master in a piconet that is part of the scatternet.
Q10 | What is the access point (AP) in a wireless LAN?
  • device that allows wireless devices to connect to a wired network
  • wireless devices itself
  • both device that allows wireless devices to connect to a wired network and wireless devices itself
  • all the nodes in the network
Answer: device that allows wireless devices to connect to a wired network
Explaination:
access point in a wireless network is any device that will allow the wireless devices to a wired network. a router is the best example of an access point.
Q11 | In wireless distribution system                      
  • multiple access point are inter-connected with each other
  • there is no access point
  • only one access point exists
  • access points are not required
Answer: multiple access point are inter-connected with each other
Explaination:
a wireless distribution system allows the connection of multiple access points together. it is used to expand a wireless network to a larger network.
Q12 | In wireless network an extended service set is a set of                  
  • connected basic service sets
  • all stations
  • all access points
  • connected access points
Answer: connected basic service sets
Explaination:
the extended service set is a part of the ieee 802.11 wlan architecture and is used to expand the range of the basic
Q13 | Which protocol is used to link all the devices in the IoT?
  • tcp/ip
  • network
  • udp
  • http
Answer: tcp/ip
Explaination:
the internet of thing is the global system of interconnected computer networks that use the internet protocol suite (tcp/ip) to link billions of devices worldwide.
Q14 |                  enables seamless integration of LoWPAN devices with internet leveraging.
  • ietf 6lowpan
  • ieft coap
  • rfid/nfc
  • ieee 802.15.4.lowpan
Answer: ietf 6lowpan
Explaination:
ietf 6lowpan enables seamless integration of lowpan devices with internet leveraging ipv6 large address space and appln. layer protocol reuse.
Q15 |                  enables open application layer for constrained nodes.
  • ietf 6lowpan
  • ieft coap
  • rfid/nfc
  • ieee 802.15.4.lowpan
Answer: ieft coap
Explaination:
ietf coap – open application
Q16 |                  tags, devices, smart phones useful in identification.
  • ietf 6lowpan
  • ieft coap
  • rfid/nfc
  • ieee 802.15.4.lowpan
Answer: rfid/nfc
Explaination:
rfid/nfc – tags, devices, smart phones useful in product / object identification and gathering associated information.
Q17 |                  supports low energy radio operation.
  • ietf 6lowpan
  • ieft coap
  • rfid/nfc
  • bluetooth
Answer: bluetooth
Explaination:
bluetooth smart devices support low energy radio operations like, heart rate monitors, blood glucose monitors suitable for health care and fitness etc.
Q18 |                  specification defining the PHY and MAC layer of low power devices.
  • ietf 6lowpan
  • ieft coap
  • rfid/nfc
  • ieee 802.15.4.lowpan
Answer: ieee 802.15.4.lowpan
Explaination:
ieee 802.15.4.lowpan – specification defining the phy and mac layer of low power devices supporting 250 kb/s data rate, small packet size 127 bytes.
Q19 |                  is an application layer protocol for resource constrained devices.
  • coap
  • hmtp
  • mqtt
  • tcp/ip
Answer: coap
Explaination:
coap is an application layer protocol (ietf draft) for resource constrained devices. adheres to the restful approach for managing the resources and support mapping to http.
Q20 | Adheres to                  approach for managing resources and support mapping to HTTP.
  • retful
  • iot
  • restful
  • restful
Answer: restful
Answer: restful
Explaination:
coap is an application layer protocol (ietf draft) for resource constrained devices. adheres to restful approach for managing resources and support mapping to http.
Q21 |                  resources are identified by Uniform Resource Identifiers.
  • coap
  • hmtp
  • mqtt
  • tcp/ip
Answer: coap
Explaination:
coap is an application layer protocol (ietf draft) for resource constrained devices. adheres to restful approach for managing resources and support mapping to
Q22 | Which protocol interacts asynchronously over UDP?
  • hmtp
  • coap
  • mqtt
  • tcp/ip
Answer: coap
Explaination:
coap is an application layer protocol (ietf draft) for resource constrained devices. it is asynchronous message interactions over udp, request/response semantics coap resources are identified by uniform resource identifiers.
Q23 | CoAP messages are short.
  • true
  • false
Answer: true
Explaination:
coap messages are short – 4 bytes header followed by options (typically, 10-20 bytes header).
Q24 | How many messages types are there in CoAP?
  • 2
  • 5
  • 3
  • 4
Answer: 4
Explaination:
four message types are: confirmable
Q25 | Number of methods in CoAP?
  • 2
  • 5
  • 4
  • 3
Answer: 4
Explaination:
four coap methods: get
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