Test
IMS
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Preguntas del test (30)
1In wireless communication, information can be added on to a “meaningless” sine wave by changing its amplitude, frequency or phase. This is called:
- AModulation
- BCoding
- CFourier transformation
2Which of the following transmission schemes would provide the highest data rate in ideal
conditions:- AQPSK
- BBPSK
- C16-QAM
3Both source coding and channel coding decrease the redundancy in the data transmitted (true or
false):- AVerdadero
- BFalso
4If λ is the wavelength of the wireless transmission, what would be a common length for the
antenna in use:- A2λ
- B4λ
- Cλ/4
5The OSI model for communication systems has 7 layers. Please choose the ones that belong to that model from the list below
- ANetwork layer
- BData link layer
- CPhysical layer
- DSecurity layer
- EAbstraction layer
6Bluetooth low energy (BLE) can provide a maximum communication range of
- A100 meters
- B30 meters
- CMore than 1 km
7The codec used for audio coding in Bluetooth low energy (BLE) is:
- AMP3
- BSBC
- CAAC
- DLC3
8BLE audio can provide acceptable sound quality at date rates of:
- A200 kbps
- B100 kbps
- C300 kbps
9You have an image read to an “img” variable, what is the Python code to print the width, height, and number of channels of the image?
- Aprint(img.coordinates)
- Bprint(img.dimensions)
- Cprint(img.shape)
- Dprint(img.size[0], img.size[1])
10How do you extract red channel: redChannel = img[:, :, [blank_start]2[blank_end]]
How do you extract blue channel: blueChannel = img[:, :, [blank_start]0[blank_end]]
How do you extract green channel: greenChannel = img[:, :, [blank_start]1[blank_end]]- A2
- B0
- C1
11When you want to compute the background of a video (for a fixed camera), what is the simplest way to do it
- AFind the edges of the images of the video and add them together
- BCompute the average image of all the images of the video
- CFind the regions of the images of the video and add them together
- DCompute the average edges image of all the images of the video
12When you want to compute distances between colors in an image, what is the best colorspace to use?
- AHLS
- BLab
- CRGB
- DHSV
13When you want to find the optimal edges in an image, what edge detector should you use
- AGaussian
- BLaplacian
- CCanny
- DRoberts
14
For the GNSS receiver to be able to calculate a position, what is the minimum number of satellites it needs to receive information from?- A4
- B2
- C6
- D11
15When the GNSS receiver reports its position, it also often reports a quality value called Dilution of Precision (DOP). Does a high DOP value correspond to a high or low accuracy of the position?
- ALow accuracy
- BHigh accuracy
16Which of the following technologies can be used for different types of localization applications where geographical or relative location is used?
- ABluetooth
- BWi-fi
- CRFID/NFC
- DGPRS/GSM/4G/5G
- EGNSS
17When doing computer vision applications such as stereophotogrammetry one step is to find features in the images to match. Which among the alternatives below are commonly used methods/algorithms?
- ASIFT
- BBRIEF
- CSLUSH
- DORB
- EOCR
18What is true or false for a pinhole camera: It has a very large depth of field:
- AVerdadero
- BFalso
19What is true or false for a pinhole camera:
It is very light sensitive:- AVerdadero
- BFalso
20Using a camera for computer vision tasks often requires the camera and lens combination to be calibrated. What are the typical artefacts (outputs) from the camera calibration?
- AImage length
- BDistortion coefficients
- CFocal length
- DPrincipal point
21Speed of light
What is the speed of light in vacuum: [blank_start]300000000[blank_end]- A300000000
22For a simple time of flight lidar system, the time for a pulse to exit the lidar, travel to the target, and come back to the lidar is 43 nanoseconds. How far away is the target? [blank_start]645[blank_end] cm
- A645
23Phase modulated ToF - [blank_start]Multiple targets[blank_end]
Pulsed ToF - [blank_start]High accuracy[blank_end]- AMultiple targets
- BHigh accuracy
24The latest models of iPhone/iPad Pro has a built in 3D-camera. What principle is that camera based on:
- ATime of flight
- BTriangulation
25The Kinect sensor used in X-box is based on the following principle:
- ATime of flight
- BTriangulation
26What is the typical content of a WBS?
- APersonal tasks
- BSpring goals
- CTime estimates
- DWork packages
- ESchedules
27What does the abbreviation WBS stand for?
- AWritten Breakdown Strategy
- BWide Build Strategy
- CWork Based System
- DWork Breakdown Structure
28How is typically a sprint planning performed?
- AThe product owner suggests a prioritised part of the backlog to the scrum master/team leader. The entire team estimates the suggested tasks.
- BThe team decides together what should be done from the backlog and what estimates are appropriate for each task.
- CThe scrum master/team leader decides what should be done in the sprint. The entire team estimates the suggested tasks.
- DThe product owner decides what should be done in the sprint and what estimates are appropriate.
29Which agile roles are involved in a sprint planning?
- AEveryone
- BScum master / Team leader
- CProject Manager
- DProduct Owner
- EScrum Owner
30What is the purpose and the resulting output from the sprint planning?
- APrioritise the backlog and estimate the tasks
- BSprint goals and a set of tasks that the team commits to complete in the sprint
- CDistribute the work between team members and a prioritised backlog
- DRefine the tasks in the backlog and sprint goals
Información
- Descripción
- Test sobre IMS, creado por Ellen Carlsson el 26/05/2024.
- Autor
- Ellen Carlsson
- Idioma
- English
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