When your command prompt looks like this: switch(config)#

which mode are you in?

1. user exec mode
2. privileged mode
3. global config mode
4. admin mode

3. Global configuration mode

Explanation:

Switch(config)# ? To exit global configuration command mode and to return to

privileged EXEC mode, enter the end or exit command, or press Ctrl-Z. Interface

configuration commands modify the operation of the interface

it would be a. excessive network collisions or d. slow connectivity between devices those would be my answer.

save and proof (apex verified)