$)$ Using salted Hash is to make attackers work $$more expensive$.$ There are other ways to achieve the same goal. For example, instead of storing Hash$($password$),$ the system stores Hash$10000($password$).$ For a user who entered his$/$her password, the system will Hash the password $10000$ times and see if the final result matches the stored one. Meanwhile, an attacker who wants to build a rainbow table will also spend $10000$ times than if Hash$($password$)$ is stored.

While doing this indeed slows down the attacker$$s offline password guessing attempt, it also significantly increases the server$$s effort. Suppose the server still stores Hash$10000($password$),$ but when Alice logs in$,$ her client machine first computes Hash$9999($password$)$ and sends that to the server.

a$.$ Will there still be the advantage gained by storing Hash$10000($password$)?$

b$.$ Will this save the server computation?

To answer both questions, first clearly give a Yes$/$No$,$ and then use a few sentences to explain why you make this conclusion.$)$ Using salted Hash is to make attackers work $$more expensive$.$ There are other ways to achieve the same goal. For example, instead of storing Hash$($password$),$ the system stores Hash$10000($password$).$ For a user who entered his$/$her password, the system will Hash the password $10000$ times and see if the final result matches the stored one. Meanwhile, an attacker who wants to build a rainbow table will also spend $10000$ times than if Hash$($password$)$ is stored.

While doing this indeed slows down the attacker$$s offline password guessing attempt, it also significantly increases the server$$s effort. Suppose the server still stores Hash$10000($password$),$ but when Alice logs in$,$ her client machine first computes Hash$9999($password$)$ and sends that to the server.

a$.$ Will there still be the advantage gained by storing Hash$10000($password$)?$

b$.$ Will this save the server computation?

To answer both questions, first clearly give a Yes$/$No$,$ and then use a few sentences to explain why you make this conclusion.