Declaring a(n) Android layout in XML makes it easier to visualize the structure of a user interface.

A technician goes into an office and smells rotten food and body odor. The technician starts gagging and holding his nose. He tells the customer he cannot work in such conditions. The customer complains to the IT supervisor. What issue will the supervisor discuss?

A) Safety B) Being judgmental C) Being proactive D) PPI

Which of the following ports does a telnet application utilize?

A. 21 B. 23 C. 80 D. 443