Encryption questions and answers

The list and approach has evolved over the years, as I think it should, and I think it represents a good balance between technical content and the philosophy around desired answers. How to Build a Successful Cybersecurity Career.

Top 12 SSL Interview Questions | Network Security

Be willing to constantly evaluate your questions including these below to make sure they are not based on pet, gotcha, puzzle, or pressure. Have them talk through how each are used. The key sorry is that they understand the initial exchange is done using asymmetric and that bulk data encryption requires speed and therefore symmetric algorithms.

Standard stuff here: make sure they know that symmetric uses a single key while public-key uses two. Look for the standard responses, with the client sending helo with ciphers, server responding with a public key and picking a cipher, agreement on a shared key, etc.

But then dive deeper into the questions below. If they get that far, make sure they can elaborate on the actual difference, which is that one requires you to have key material beforehand RSAwhile the other does not DH. Blank stares are undesirable. Encoding is designed to protect the integrity of data as it crosses networks and systems, i.

It is easily reversible because the system for encoding is almost necessarily and by definition in wide use. With hashing the operation is one-way non-reversibleand the output is of a fixed length that is usually much smaller than the input. An IV is used to initiate encryption by providing an addition third input in addition to the cleartext and the key. In general you want IVs that are random and unpredictable, which are used only once for each message. The goal is to ensure that two messages encrypted with the same key do not result in the same ciphertext.

Block-based encryption algorithms work on a block of cleartext at a time, and are best used for situations where you know how large the message will be, e. ECB just does a one-to-one lookup for encryption, without using an IV, which makes it fairly easy to attack using a chosen-plaintext attack. The difference in results can be remarkable. Trick question here. And the goal is not to be cute.

Look for a smile like they caught you in the cookie jar. A trick question, to be sure, but an important one. If they start throwing out port numbers you may want to immediately move to the next candidate.

An answer of either is a fail, as those are layer 4 protocols.

encryption questions and answers

Look for a discussion of security by obscurity and the pros and cons of being visible vs. Basically anything intelligent in terms of discussion. There can be many signs of maturity or immaturity in this answer.

If they get it right you can lighten up and offer extra credit for the difference between Linux and Windows versions. Many people think that it first sends a packet to the first hop, gets a time.CheckPoint Interview Questions.

All the best for future and happy learning. A Firewalls control the traffic between the internal and external networks and are the core of a strong network security policy.

A Check Point Software Blades are a set of security features that makes sure that the Security Gateway or Security Management Server gives the correct functionality and performance. A A primary goal of a firewall is to control access and traffic to and from the internal and external networks.

The Firewall lets system administrators securely control access to computers, clients, servers and applications. The Firewall Rule Base defines the quality of the access control and network performance. Rules that are designed correctly make sure that a network:. A The firewall is the core of a well-defined network security policy. The goal of the Check Point Firewall Rule Base is to create rules that only allow the specified connections.

A Use SmartDashboard to easily create and configure Firewall rules for a strong security policy. Explicit rules — Rules that you create to configure which connections the Firewall allows Implied rules — Rules that are based on settings in the Global Properties menu. A The Firewall inspects connections and enforces the Rule Base in a sequential manner.

The Firewall inspects each connection that comes to the network and compares the data source, destination, service, etc. If the connection matches the rule, the Firewall applies the action of that rule. If the connection does not match the rule, the Firewall continues with the next rule in the Rule Base. Stealth rule that prevents direct access to the Security Gateway. Cleanup rule that drops all traffic that is not allowed by the earlier rules. There is also an implied rule that drops all traffic, but you can use the Cleanup rule to log the traffic.

A Networks use different security zones to protect very important resources and to defend against malware. Create rules that allow only the applicable traffic in and out of a security zone. Make sure that there are different rules in the Firewall Rule Base that define traffic to and from the security zones.

A The Firewall on the perimeter of the network is responsible for all the incoming and outgoing traffic. The DMZ makes sure that these servers cannot connect to the internal network. For example, these are rules for a web server in the DMZ:. This can bypass the Firewall to introduce malicious content and actions malware and bot downloads, DoS attacks, unauthorized access, and so on to your network.

Anti-Spoofing detects if a packet with an IP address that is, according to the topology, behind one interface, actually arrives from a different interface. For example, if a packet from an external network has an internal IP address, Anti-Spoofing blocks the packet. Configure Anti-Spoofing protection on all the interfaces of the Security Gateway, including internal interfaces. The Firewall can allow external traffic to access internal resources.

The Firewall can translate up to 50, connections at the same time from external computers and servers. The Firewall uses the requested service or destination port to send the traffic to the correct server.Published on: November 7th, Updated on: February 21st, By : admin.

IT Security Interview Questions

Here is a list of SSL interview questions and answers which generally asked in an interview. It encrypts the data flow between the web browser and web server, hence ensures confidentiality. Ans: The major difference between symmetric and asymmetric cryptography is the use of the single key for encryption and decryption in case of symmetric cryptography while the use of the public and private key for encryption and decryption in case of asymmetric cryptography.

Ans: SSL used symmetric encryption to encrypt data between browser and web server while asymmetric encryption is used to exchange generated symmetric key which validates the identity of client and server.

This encoded information is used by certifying authority CA to issue an SSL certificate to the applicant. Ans: Pre-shared key encryption algorithms refer to the symmetric key used to encrypt data between browser and web server. Certifying Authority CA issue certificates to an organization on validating their identities. Ans: This is the lowest level of validation done by the Certifying Authority CA to issue a certificate to an organization.

Here, CA only verifies whether the domain is controlled by an organization or not. This process can be done via email. Ans: This is the medium level of validation done by the Certifying Authority CA to issue a certificate to an organization.

encryption questions and answers

Here, CA validates the name, state, and country of an organization. This process can be done by physically verifying the organization location. Ans: This is the highest level of validation done by the Certifying Authority CA to issue a certificate to an organization. Here, CA validates ownership, physical location, state, and country of organization. This process can be done by physically verifying the organization location and checks the legal existence of the company. If you have any questions, feel free to ask in the comments section below.

Nothing gives me greater joy than helping my readers! Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.

Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Skip to content. Search for: Search. Subscribe us to receive more such articles updates in your email. Comments: Cancel reply Your email address will not be published.Published on: November 14th, Updated on: February 21st, By : admin. Here we are discussing interview questions and answers on cryptography. Cryptography is a very hot topic for security professionals nowadays.

This is set 1 for this topic. Ans: As we move towards the digital economy, cryptography plays a crucial role in securing your digital assets from hackers by encrypting it. Ans: Cipher is a process of creating data in the non-readable form.

In other words, you can say it is an algorithm responsible for encryption and decryption of data. It consists of two keys: Public and Private keys. Private key holds only by the owner of that key and the corresponding public key is available to different persons.

If encryption is happening with the private key, decryption can be done with the public key and vice versa depends on the usage of asymmetric encryption.

What is the major difference between Symmetric and Asymmetric Key Algorithm?

CISSP Practice Questions of the Day from IT Dojo - #19 - Encryption

Ans: Transpositional ciphers is an encryption algorithm based on rearranging letters of the original message and convert it into non-readable form. Another important advantage of this algorithm is the property of extreme security that makes it unbreakable. If you have any questions, feel free to ask in the comments section below. Nothing gives me greater joy than helping my readers! Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.

Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Skip to content. Search for: Search. Subscribe us to receive more such articles updates in your email. Comments: Cancel reply Your email address will not be published.Are you prepared in attending an interview? Are you worried for job interview preparation? SQL Server offers a security architecture which is designed to allow database administrators and developers to create secure database applications and counter threats.

SQL Server Security is an architecture providing developers and administrators to create and secure the database. Below are the list of frequently asked SQL Server Security interview questions and answers which can make you feel comfortable to face the interviews:.

Question 1. Answer : The Guest user account is created by default in all databases and is used when explicit permissions are not granted to access an object. It is not mapped directly to any login, but can be used by any login. Depending on your security needs, it may make sense to drop the Guest user account, in all databases except Master and TempDB. Question 2. Question 3. How Do You Restrict?

Answer : Do not give access to any other login on that database except for those 3 app logins. Question 4. Answer : To find out the orphan users:. Question 5. Answer : SysAdmin — Can perform any activity. SecurityAdmin — Can manage server level logins, also can manage db level if they have permission on db. Dbcreator — Can create, alter, drop and restore any database on the instance. Question 6. What Are The Database Roles? Fixed database roles are not equivalent to their database-level permission.

Question 7. Question 8.Backup encryption denotes that authorized parties can access the backups which have been stored outside a secure area. Do all tenant databases in the same system have similar backup encryption root key?

No, an exclusive backup encryption root key is produced for the system database and for each tenant database. The following privileges would be required for both the system database and the tenant databases, for backup and recovery with or without encryption:.

Post the enablement of the backup encryption, various types of SAP HANA backups of the same tenant database or system database are encrypted with the same backup encryption root key. Am I required to enable the backup encryption for a tenant database explicitly once the backup encryption has already been enabled for the system database? Incase, when the backup encryption was enabled, the tenant database already existed, then the backup encryption needs to be enabled explicitly for every tenant database.

If a new tenant has been created, post the enablement of the backup encryption, then the newly created tenant database inherits the status of the system database. Obliquely, the backup encryption is previously enabled. Every tenant database along with the system database are assigned their own encryption key, regardless of whether backup encryption has been enabled implicitly or explicitly. If a particular tenant database does not need to be encrypted, the tenant database administrator can disable encryption for that tenant database.

In case, the backup encryption has been enabled, then the backup runtime increases by the time required for encrypting the backup. The following SQL statement have to be executed for the system database and for every tenant database. The backup catalog creates a record whether a backup has been encrypted. Storage snapshots have the ability to store an image of the data area.

The storage snapshot encompasses the encrypted data, once the data area is encrypted by data volume encryption. The data volume encryption root key has been preserved in this meta-data file. Even if data volume encryption has been enabled, the data volume encryption root key is still not encrypted. The user is suggested for security reasons to utilize backup encryption along with the data volume encryption for storage snapshots. Note: The backups of backup catalog comprise of the references to the backup encryption root keys which were utilized for encrypting the backups.

A database administrator has to clearly ensure that the backup encryption root keys are backed up regularly, in case the backup encryption is enabled.IT Security is one of the biggest words for the last couple of years in entire world media. It is one of the big noise for all the offices including government offices, a lot of special norms has been introduced by central audit forum for especially in IT security. Special concern area is in the digital area.

IT security is day by day getting very faster changes and all the involved people are really very concerned on the same. If we follow everyday headlines, this is one of the common headlines of any of the hacking incident or IT security breaking incident in anywhere government or private sector.

So people should need to be more aware of common security purpose as well as day by day update on security awareness so that avoiding any kind of hacking activity smoothly without any big impact.

This kind of security concern is not only specific technical concerns, but there also have a lot of Security Bridge in case of personal or business point of view as well. One of the biggest security leakage possibility is in an email, where our normal attitude to attach important information and send through the network. IT security guys normally suggested two approaches, one is following one specific encryption mechanismand encrypt secure data before sending it through the network.

Otherwise maintain everything in the internal secure networknot moving to the outside of secure network anytime. This kind of encryption security normally using public and private key utility, where a public key has been shared between sender and receiver.

And one secret private key maintained by that specific encryption tool. It is true that every interview is different as per the different job profiles. Here, we have prepared the important IT Security Interview Questions and Answers which will help you get success in your interview. These top interview questions are divided into two parts are as follows:. This software is very much popular to use encrypting entire email data smartly for avoiding data leakage uncertainty.

It is not only useful to encrypt mail body, rather than it can be very popular on signing, encrypting or decryption feature for physical filesnormal text, full directories, attach data, even whole data partition as well. As all the big companies are very much concern about hiding or encrypting their specific communication, PGP is one the common choice for them to use on any communication.

The main utility of PGP is using a secret private key which only known to the tool and one shareable public key which is available for both sender and receiver. So the receiver can easily identify or verify sender secure identity to confirm the sender person security, and also can verify the proper integrity of the content shared by the sender. So it is very easy to understand for the receiver that mail is somehow tampered by someone in the network root or not. Data — Generate Random Key — Encrypt data using this random key — Encrypt random key by receiver public key X1 — encrypt random key by sender public key Y1 — sending encrypted data to the receiver.

Answer: There have a lot of tools available for helping to connect with the other remote desktop from own system. Those tools are fully secured of we use license version of those tools.

One constraint is both the system should have internet up, and that tool should be in running condition. Some of the popular tools are team viewer, anysdesk, amyadmin, or gotomypc etc.

All those passwords should have some secure password authentication or remote desktop user should need to accept accessing user request. Answer: For IT or network securitythere has one critical approach, where sender writing their text in some specific encryption approach, and receiver read the content by that specific decryption approach which defines by a sender and only known to the receiver.

This kind of security is normally calling packet sending approach. Social Engineering Attack is sometimes very dangerous and little easy for a hacker to use the same. It mainly depends on human interaction, mean gathering any personal details by purely illegal integration and manipulate their data easily and using for their own gain. This is one of the biggest threat in the last couple of years. And it is very easy to break as for this kind of hacking not require an expert person for breaking network or critical security.

Any non-technical person can able to do the same. Answer: The possibility of a hacking password, personal information, credit card data, etc.

encryption questions and answers

Provide one boundary for trusted and untrusted network.


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