March/April 2023

Question 1

SAE Specs as a group

Answer 1

J2735 - V2x message set (SPaT, MAP, BSM) used by DSRC & CV2X
J3016 - Levels
J3018 guidelines for testing Automated Vehicles
J3224 - SDSM (Sensor Data Sharing Message)

Question 2

What are the member objects of the Vue context?

Answer 2

state,
rootState,
commit,
dispatch,
getters,
rootGetters

Question 3

state options (Vue) (7)

Answer 3

data (returns the initial reactive content state)
props
computed
methods
watch (define callbacks to be used on data change)
emits
expose (a way of creating public properties)

Question 4

NTRIP

Answer 4

Network Transport of RTCM over Internet Protocol
an HTTP derivative.

Question 5

Left turns are what (in phase diagram)?

Answer 5

odd

Question 6

MMU (in traffic controller)

Answer 6

Malfunction Management Unit

Question 7

TSCBM

Answer 7

Traffic Signal Controller Broadcast Message

Question 8

Maven

Answer 8

Maven is a build automation tool used primarily for Java projects

Question 9

GGA

Answer 9

The NMEA GGA sentence is one of the most common sentences used with GPS receivers. It contains information about position, elevation, time, number of satellites used, fix type, and correction age.

Question 10

__pychache__ folder

Answer 10

__pycache__ is a directory that is created by the Python interpreter when it imports a module. It contains the compiled bytecode of the module, which can be used to speed up subsequent imports of the same module.

Question 11

Ansible

Answer 11

Ansible Playbooks offer a repeatable, re-usable, simple configuration management and multi-machine deployment system

Question 12

Jedis

Answer 12

Jedis is a client library inside Redis that’s designed for performance and ease of use. Jedis is a lightweight offering compared to other Redis Java clients; it offers fewer features but can still handle large amounts of memory.

Question 13

GPS Radio Frequencies (names & MHz)

Answer 13

L1 - 1575.42 MHz L2 - 1227.60 MHz

Question 14

trick to get .env files without exports…

Answer 14

set -a # turn on automatic exporting
. test.env # source test.env
set +a # turn off automatic exporting

Question 15

What is the AWS SDK for Python

Answer 15

Boto3

Question 16

AWS’s NoSQL database

Answer 16

DynamoDb

Question 17

BIU

Answer 17

Bus Interface Unit (for Traffic Signal Controller)
interfaces 24 V logic signals to the SDLC serial bus in a TS 2 cabinet. The BIU interfaces between the Controller Unit and the Loop Detector Racks, Terminals and Facilities, and other devices in a NEMA TS-2 Cabinet Assembly. It is responsible for controlling load switches, providing dimming, receiving and isolating pedestrian calls, analyzing detector faults, time-stamping detector calls, and providing detector resets.

Question 18

NGINX

Answer 18

A web server, commonly used as a reverse proxy, load balancer, mail proxy and HTTP cache.

Question 19

gunicorn

Answer 19

Green Unicorn is a Python Web Server Gateway Interface (WSGI) HTTP Server. Often paired with NGINX.

Question 20

pre-fork worker model

Answer 20

A master creates forks (ahead of time, hence the pre in pre-fork) to handle requests. Forks are spawns of the same process. The completely separate nature of the forking allows non thread safe code to execute in some degree of isolation.

Question 21

RITIS

Answer 21

leading big data aggregation and dissemination platform for transportation

Question 22

UM: Sponsored Project

Answer 22

externally funded research

Question 23

UM: Employing Unit?

Answer 23

The employing unit is Mcity (Mcity is a unit)

Question 24

UM: RPM

Answer 24

Resource, Planning, & Management

Question 25

Mcity: Who is our unit supervisor?

Answer 25

Kasie

Question 26

Invariant

Answer 26

An invariant is a condition that can be relied upon to be true during execution of a program, or during some portion of it