Network+ N10-008 Network Security 4.1 Exam Study Guide with Complete Solutions Latest Updated CIA Triad - Correct Answer Confidentiality: Keeps data private and safe using encryption and authentication to access resources.Integrity: Ensures data was not modified in transit and verifies it came from its original source.Availability: Measures data accessibility and is increased by designed redundant networks.Symmetric Encryption - Correct Answer Sender and receiver use the same key to encrypt and decrypt the message. 1000X faster than asymmetric encryption.
DES Triple DES AES DES (Data Encryption Standard) - Correct Answer A 56-bit encryption key to secure data and is considered weak.Triple DES - Correct Answer Uses three 56-bit keys which give a total key strength of 168 keys.AES (Advanced Encryption Standard) - Correct Answer Preferred symmetric encrypting standard today and is available in 128-bit, 192-bit, and 256-bit keys Asymmetric Encryption - Correct Answer Sender and receiver use the different keys to encrypt and decrypt a message.PKI (Public Key Infrastructure) - Correct Answer Gives secure email exchanges and web browsing and solves the problem of having to distribute the keys ahead of time.
Hashing Algorithms - Correct Answer MD5: 128-bit
SHA-1 (Secure Hash Algorithm V1): 160-bit
SHA-256: 256-bit
CRAM-MD5: MD5 variant used in email systems 1 / 2
Threat - Correct Answer A person or event that has the potential for impacting a valuable resource in a negative manner.
IE: hacker, hurricane, etc
Vulnerability - Correct Answer A quality or characteristic within a given resource or its environment that might allow the threat to be realized.Internal Threat - Correct Answer Any threat that originates within the organization itself.External Threat - Correct Answer Any threat that could be people, like a hacker, or it can be an event or environmental condition like a wildfire.Environmental Vulnerabilities - Correct Answer Undesirable conditions or weaknesses that are in the general area surround the building where a network is run.Physical Vulnerabilities - Correct Answer Undesirable conditions or weaknesses in the buildings where a network is run.Technical Vulnerabilities - Correct Answer System-specific conditions that create security weaknesses.CVE (Common Vulnerabilities and Exposures) - Correct Answer A list of publicly disclosed computer security weaknesses.Zero-Day Vulnerability - Correct Answer Any weakness in the system design, implementation, software code, or a lack of preventive mechanisms in place.Exploit - Correct Answer Piece of software code that takes advantage of a security flaw or vulnerability within a system or network.Risk Management - Correct Answer The identification, evaluation, and prioritization of risks to minimize, monitor, and control the vulnerability exploited by a threat.
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