The user could be influenced by DNS hijacking if the government of that country uses DNS redirecting as a mechanism to mask censorship.

User level threads are threads that are visible to the programmer and are unknown to the kernel. The operating system kernel supports and manages kernel level threads. Three different types of models relate user and kernel level threads. Which of the following statements is/are true ? (a) (i) The Many - to - one model maps many user threads to one kernel thread (ii) The one - to - one model maps one user thread to one kernel thread (iii) The many - to - many model maps many user threads to smaller or equal kernel threads (b) (i) Many - to - one model maps many kernel threads to one user thread (ii) One - to - one model maps one kernel thread to one user thread (iii) Many - to- many model maps many kernel threads to smaller or equal user threads

A

(a) is true; (b) is false

B

(a) is false; (b) is true

C

Both (a) and (b) are true

D

Both (a) and (b) are false

DNS trojans are used for performing a type of DNS hijacking.

A

True

B

False

Your network contains 10 domain controllers, 10 member servers, and approximately 1,000 client computers. All the servers run Windows 2000 Server, and all the client computers run Windows 2000 Professional. Two of the domain controllers act as DNS servers. Users of client computers use file sharing to grant access to files stored locally. The network has 10 subnets and uses TCP/IP as the only network protocol. You want to configure the network so that all computers can resolve the addresses of all other computers by using DNS. Client computers must be able to register and resolve addresses if a server fails. How should you configure the DNS servers?

A

Configure one server with a standard primary zone for the domain, and configure at least one server with standard secondary zone

B

Configure one server with a standard primary zone for the domain, and configure at least one server with an Active Directory integrated primary zone

C

Configure one server with an Active directory integrated primary zone for the domain, and configure at least one server with a standard secondary zone

D

Configure at least two servers with Active Directory integrated primary zones for the domain

E

Configure at least two servers with standard primary zones for the domain

Study the following information carefully and answer the questions that follows. 5 persons Anil, Bhagat, Ishan, Deepak and Parmish use 5 different apps namely, WhatsApp, Instagram, Twitter, Facebook and LinkedIn. They all wear different brands of shoes namely, Adidas, Reebok, Nike, Puma and Vans. The person who wears Puma shoes does not uses Facebook. Parmish wear Nike shoes and uses LinkedIn app. Anil who wear Adidas shoes but neither uses Facebook nor Twitter. Ishan neither wear Vans nor Puma shoes but he uses Twitter app. The person who uses WhatsApp doesn’t wear Adidas shoes. Bhagat uses Facebook app. Deepak wear which shoes brand, and also determine who uses Instagram?

A

Puma, Anil

B

Vans, Bhagat

C

Puma, Ishan

D

Vans, Deepak

If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth ? 1. GPS and navigation systems could fail. 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:

A

1, 2, 4 and 5 only

B

2, 3, 5, 6 and 7 only

C

1, 3, 4, 6 and 7 only

D

1, 2, 3, 4, 5, 6 and 7

Hjksuite Tool is a collection of programs for hijacking. It contains a library called hjklib which can help in implementing TCP/IP stack-over hijacking.

A

True

B

False

Match the following Types of mechanism Motion achieved P. Scott Russel mechanism 1. Intermittent motion Q. Geneva mechanism 2. Quick return motion R. Off set slider crank mechanism 3. Simple harmonic motion S. scotch Yoke mechanism 4. Straight line motion

A

P-2,Q-3,R-1,S-4

B

P-3,Q-2,R-4,S-1

C

P-4,Q-1,R-2,S-3

D

P-4,Q-3,R-1,S-2

Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

A

1, 2 and 4

B

2, 3 and 4

C

1, 2 and 3

D

1, 3 and 4

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All ointments are tablets. No tablet is an injection. No injection is a mask. Conclusions: I. No ointment is an injection. II. No ointment is a mask. III. No tablet is a mask.

A

Only conclusion I follows

B

Only conclusion I and III follows

C

Only conclusion Il follows

D

None of the conclusions follows

In linear spatial filtering, what is the pixel of the image under mask corresponding to the mask coefficient w (1, -1), assuming a 3*3 mask?

A

f (x, -y)

B

f (x + 1, y)

C

f (x, y – 1)

D

f (x + 1, y – 1)

The user could be influenced by DNS hijacking if the government of that country uses DNS redirecting as a mechanism to mask censorship.

Related Questions