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Cryptography offers a set of required security services. Which of the following is not among that 4 required security services?

Cryptography offers a set of required security services. Which of the following is not among that 4 required security services? Correct Answer Steganography

There are 4 desired & necessary security services are encryption, Message Authentication Codes (MAC), digital signatures and hash functions. These help in securing the transmission of data.

Related Questions

An art gallery engages a security guard to ensure that the items displayed are protected. The diagram below represents the plan of the gallery where the boundary walls are opaque. The location the security guard posted is identified such that all the inner space (shaded region in the plan) of the gallery is within the line of sight of the security guard. If the security guard does not move around the posted location and has a 360° view, which one of the following correctly represents the set of ALL possible locations among the locations P, Q, R and S, where the security guard can be posted to watch over the entire inner space of the gallery.
The Coordinator of an International Virtual Conference has planned six guest lectures on different areas-Cryptography, Fluid Dynamics, Big Data Analysis, Wavelet Theory, Differential Equations and Linear Algebra-to be organised only one on each day from Monday to Sunday.  Wavelet Theory should be organised immediately after Differential Equations.  Big Data Analysis should be organised on Wednesday and should not be followed by Linear Algebra.  Fluid Dynamics should be organised on Friday and there should be a gap of two days between Cryptography and Linear Algebra.  One day there will be no lecture (Saturday is not that day), and just before that day Linear Algebra will be organised. How many lectures are organised between Big Data Analysis and Wavelet Theory? 
Private Key cryptography is also known as __________ cryptography.
Public key cryptography is also known as _________ cryptography.
India has been constantly negotiating for an expansion in the trade in services via Mode 4 as defined under the General Agreement on Trade in Services (GATS). Consider the following pairings regarding different modes of Services under GATS of the WTO: 1. Mode 1 : Cross-Border Supply of Services 2. Mode 2 : Temporary cross-border movement of a natural person to consume services abroad 3. Mode 3 : Cross-border provision of services via the commercial presence of a company in another country 4. Mode 4 : Temporary cross-border movement of service providers Which of the above are correctly paired?
Match the following two sets. In Set - I the different Guidance Services are given and in Set - II the Role/Functions of these Guidance Services are described. Select the correct answer from the given alternatives.  Set - I   (Guidance   Services)  Set - II  (Role / Function)  (a) Occupational   Information Service  i) Gives information about the  characteristics - strength and weaknesses  of a person  (b) Placement   Service  (ii) Provides information about world of  work  (c) Follow-up   Service  (iii) Provides suitable engagement as per   the vocational preparedness  (d) Individual   Inventory Service  (iv) Takes up a view of how things are   going on after entry into the specific job    (v) Provides opportunity for understanding  oneself in a realistic way  
In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even ifthey seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statements:
(I) Empty set is a subset of any set.
(II) A set is a subset of power set. Conclusion:
(I) Empty set is a power set.
(II) A set is a subset of power set.
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The marked price of a headphone is Rs. 1400. A shopkeeper offers 20% discount on the net price and then again offers a discount of 12% on the reduced price. In the second offer, he offers a discount of 29% on the whole. Which is the better offer?
Vivo and Oppo both offer two successive discounts on a handset worth Rs. 10000. Vivo offers two successive discounts of 15% and 20% whereas Oppo offers two successive discounts of 10% and 25%. Which brand offers better discount and how much?