Check the possible communication delivery methods in the top-down communication and bottom-up communication.

Explanation/Reference:
An effective employee communication strategy provides opportunities for top down communication by management and bottom up communication from employees. The given table shows the possible communication delivery methods in the top-down communication and bottom-up communication:
Top-Down Communication
Bottom-Up Communication
Intranet
Open-door policy
Public address system announcements
All-hands meetings
Posters
Staff meetings
Newsletters
Brown-bag lunches
Individual letters to employees
One-on-one meetings
Flyers
Email
Bulletin board postings
Webcasts
Chapter: Core Knowledge Requirements for HR Professionals
Objective: Communication Skills and Strategies