I easily face the family 000-M83

I married my wife a year ago, before married, we described a nice future with enough salary and happy life, so she decided to study for 000-M83 exam IBM WebSphere Portal Technical Sales Mastery v3 certification which can help her with high salary. However, terrible life came to me from then on.
At first, she said it's very easy for her, so she studied by herself only with the study materials bought in bookstore. I did all the housework. But with her encourage, life was still wonderful to me and my family till she failed in the exam. She became irascible, I didn't know what to do…
I easily face the family 000-M83 We all disappointed and decided to give up though it could bring better future for us! A happened chance, we hear, a website which provided study materials for IT certifications. With the promise for guarantee full refund if not pass at the first time, she wanted to have a try again! To our surprise, my wife learned it very easily, only a few study materials, what's more, she passed the exam in 3 weeks with the 97% passing score! All questions are similarity with the questions provided by this! Thank Godness! We won't be worry about that any more! The one year terrible life has eventually passed! IBM WebSphere Portal Technical Sales Mastery v3

Which configuration would allow a customer to provide load balancing across multiple server machines,
fault tolerance, and the capability to provide 24x7 support while applying minor server fixes?
A. Vertical clustering
B. Horizontal clustering
C. Deployment Manager
D. Session Persistence Clustering
Answer: B