In Java Servlets, what is the purpose of the `doFilter()` method in the `Filter` interface?

What is the difference between servlets and applets? i. Servlets execute on Server; Applets execute on browser ii. Servlets have no GUI; Applet has GUI iii. Servlets creates static web pages; Applets creates dynamic web pages iv. Servlets can handle only a single request; Applet can handle multiple requests

A

i, ii, iii are correct

B

i, ii are correct

C

i, iii are correct

D

i, ii, iii, iv are correct

What is the difference between servlets and applets?
i. Servlets execute on Server; Applets execute on browser
ii. Servlets have no GUI; Applet has GUI
iii. Servlets creates static web pages; Applets creates dynamic web pages
iv. Servlets can handle only a single request; Applet can handle multiple requests

A

i, ii, iii are correct

B

i, ii are correct

C

i, iii are correct

D

i, ii, iii, iv are correct

A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure–drop is 2011Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure–drop as: α (ft/lb) = α (Δp)0.26, where α = 2.90×1010 Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.

A

≅ 88 ft2

B

= α (Δp)0.26, where α = 2.90×1010 Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance. a) ≅ 88 ft2 [ ≅ 86 ft2

C

≅ 82 ft2

D

≅ 90 ft2

In Java Servlets, what is the purpose of the `javax.servlet.Filter` interface?

A

To define JavaBean properties

B

To execute SQL queries

C

To create JavaBeans

D

To perform filtering tasks on requests and responses

Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is very high, the filter approaches to which of the following filter(s)?

A

Ideal lowpass filter

B

Gaussian lowpass filter

C

All of the mentioned

D

None of the mentioned

Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is of lower order, the filter approaches to which of the following filter(s)?

A

Ideal lowpass filter

B

Gaussian lowpass filter

C

All of the mentioned

D

None of the mentioned

In Java Servlets, what is the purpose of the `javax.servlet.http.HttpSessionActivationListener` interface?

A

To create JavaBeans

B

To execute SQL queries

C

To define JavaBean properties

D

To listen for session activation and passivation events

The filter order of a Butterworth lowpass filter determines whether it is a very sharp or extremely smooth filter function, or an intermediate filter function. Which of the following filters does the filter approach if the parameter value is very high?

A

Gaussian lowpass filter

B

Ideal lowpass filter

C

Gaussian & Ideal lowpass filters

D

None of the mentioned

What is the purpose of the `doPost()` method in Java Servlets?

A

To handle HTTP GET requests

B

To define JavaBean properties

C

To handle HTTP POST requests

D

To manage JavaBean events

In Java Servlets, what is the primary function of the `RequestDispatcher` interface?

A

To manage JavaBean properties

B

To forward a request from one servlet to another

C

To execute SQL queries

D

To manage JavaBean properties

In Java Servlets, what is the purpose of the `doFilter()` method in the `Filter` interface?

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