Docker - Compose - multichoice questions

Given the below docker-compose.yaml file:

version: "3.9"
services:
  app:
    image: "ubuntu"
  redis:
    image: "redis:alpine"
    expose:
      - 6379

Answer the below 2 questions.

Question 1

What is the network used when deploy the two specified services?

• The default docker bridge network.
• Compose automatically creates custom network for this project.
• Networking is disabled in this compose project.
• None of the above.

Question 2

How can the app service access the redis service?

• We need redis's IP address.
• By redis:6379.
• By services.redis:6379
• The redis service is not accessible from the app service.