1. Faculty of Engineering and Computing),Department of Computers and Information Technology,Yemen
2. Universiti Malaysia Perlis,Faculty of Electronic Engineering and Technology,Perlis,Malaysia
3. Universiti Tun Hussein Onn Malaysia,Faculty of Computer Science and Information Technology,Parit Raja, Johor,Malaysia
4. School of Computing, Universiti Utara Malaysia,InterNetWorks Research Laboratory,Sintok-Kedah,Malaysia