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Pass4itsure Cisco Exam 210-250 Dumps Blog Series:
QUESTION NO: 109
Penetration testing (also called pen testing) is the practice of testing a computer system, network, or Web application to find vulnerabilities that an attacker could exploit. Which of the following areas can be exploited in a penetration test? Each correct answer represents a complete solution. Choose all that apply.
A. Kernel flaws
B. Information system architectures
C. Race conditions
D. File and directory permissions
E. Buffer overflows
F. Trojan horses
G. Social engineering
210-250 exam Answer: A,C,D,E,F,G
Explanation: Penetration testing (also called pen testing) is the practice of testing a computer system, network, or Web application to find vulnerabilities that an attacker could exploit. Following are the areas that can be exploited in a penetration test: Kernel flaws: Kernel flaws refer to the exploitation of kernel code flaws in the operating system. Buffer overflows: Buffer overflows refer to the exploitation of a software failure to properly check for the length of input data. This overflow can cause malicious behavior on the system. Race conditions: A race condition is a situation in which an attacker can gain access to a system as a privileged user. File and directory permissions: In this area, an attacker exploits weak permissions restrictions to gain unauthorized access of documents. Trojan horses: These are malicious programs that can exploit an information system by attaching themselves in valid programs and files. Social engineering: In this technique, an attacker uses his social skills and persuasion to acquire valuable information that can be used to conduct an attack against a system.
QUESTION NO: 110
Which of the following types of activities can be audited for security? Each correct answer represents a complete solution. Choose three.
A. File and object access
B. Data downloading from the Internet
C. Printer access
D. Network logons and logoffs
Explanation: The following types of activities can be audited: Network logons and logoffs File access Printer access Remote access service Application usage Network services Auditing is used to track user accounts for file and object access, logon attempts, system shutdown, etc. This enhances the security of the network. Before enabling security auditing, the type of event to be audited should be specified in the audit policy. Auditing is an essential component to maintain the security of deployed systems. Security auditing depends on the criticality of the environment and on the company’s security policy. The security system should be reviewed periodically. Answer: B is incorrect. Data downloading from the Internet cannot be audited.
QUESTION NO: 111
Which of the following federal agencies has the objective to develop and promote measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life?
A. National Security Agency (NSA)
B. National Institute of Standards and Technology (NIST)
C. United States Congress
D. Committee on National Security Systems (CNSS)
210-250 dumps Answer: B
Explanation: The National Institute of Standards and Technology (NIST), known between 1901 and 1988 as the National Bureau of Standards (NBS), is a measurement standards laboratory which is a non-regulatory agency of the United States Department of Commerce. The institute’s official mission is to promote U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve quality of life. Answer: D is incorrect. The Committee on National Security Systems (CNSS) is a United States intergovernmental organization that sets policy for the security of the US security systems. The CNSS holds discussions of policy issues, sets national policy, directions, operational procedures, and guidance for the information systems operated by the U.S.
Government, its contractors, or agents that contain classified information, involve intelligence activities, involve cryptographic activities related to national security, etc. Answer: A is incorrect. The National Security Agency/Central Security Service (NSA/CSS) is a crypto-logic intelligence agency of the United States government. It is administered as part of the United States Department of Defense. NSA is responsible for the collection and analysis of foreign communications and foreign signals intelligence, which involves cryptanalysis. NSA is also responsible for protecting U.S. government communications and information systems from similar agencies elsewhere, which involves cryptography. NSA is a key component of the U.S. Intelligence Community, which is headed by the Director of National Intelligence. The Central
Security Service is a co-located agency created to coordinate intelligence activities and co operation between NSA and U.S. military cryptanalysis agencies. NSA’s work is limited to communications intelligence. It does not perform field or human intelligence activities. Answer: C is incorrect. The United States Congress is the bicameral legislature of the federal government of the United States of America. It consists of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C. Both senators and representatives are chosen through direct election. Each of the 435 members of the House of Representatives represents a district and serves a two-year term. House seats are apportioned among the states by population. The 100 Senators serve staggered six-year terms. Each state has two senators, regardless of population. Every two years, approximately one-third of the Senate is elected at a time. The United States Congress main function is to make laws. The Office of the Law Revision Counsel organizes and publishes the United States Code (USC). It is a consolidation and codification by subject matter of the general and permanent laws of the United States.
QUESTION NO: 112
Which of the following SDLC phases consists of the given security controls: Misuse Case Modeling Security Design and Architecture Review Threat and Risk Modeling Security Requirements and Test Cases Generation?
B. Requirements Gathering
Explanation: The various security controls in the SDLC design phase are as follows: Misuse Case Modeling: It is important that the inverse of the misuse cases be modeled to understand and address the security aspects of the software. The requirements traceability matrix can be used to track the misuse cases to the functionality of the software. Security Design and Architecture Review: This control can be introduced when the teams are engaged in the “functional” design and architecture review of the software. Threat and Risk Modeling: Threat modeling determines the attack surface of the software by examining its functionality for trust boundaries, data flow, entry points, and exit points. Risk modeling is performed by ranking the threats as they pertain to the users organization’s business objectives, compliance and regulatory
requirements and security exposures. Security Requirements and Test Cases Generation: All the above three security controls, i.e., Misuse Case Modeling, Security Design and Architecture Review, and Threat and Risk Modeling are used to produce the security requirements.
QUESTION NO: 113
Which of the following are the initial steps required to perform a risk analysis process? Each correct answer represents a part of the solution. Choose three.
A. Valuations of the critical assets in hard costs.
B. Evaluate potential threats to the assets.
C. Estimate the potential losses to assets by determining their value.
D. Establish the threats likelihood and regularity.
210-250 pdf Answer: B,C,D
Explanation: The main steps of performing risk analysis are as follows: Estimate the potential losses to the assets by determining their value. Evaluate the potential threats to the assets. Establish the threats probability and regularity. Answer: A is incorrect. Valuations of the critical assets in hard costs is one of the final steps taken after performing the risk analysis.
QUESTION NO: 114
Which of the following technologies is used by hardware manufacturers, publishers, copyright holders and individuals to impose limitations on the usage of digital content and devices?
B. Grid computing
C. Code signing
D. Digital rights management
Explanation: Digital rights management (DRM) is an access control technology used by hardware manufacturers, publishers, copyright holders and individuals to impose limitations on the usage of digital content and devices. It describes the technology that prevents the uses of digital content that were not desired or foreseen by the content provider. DRM does not refer to other forms of copy protection which can be circumvented without modifying the file or device, such as serial
numbers or keyfiles. It can also refer to restrictions associated with specific instances of digital works or devices. Answer: C is incorrect. Code signing is the process of digitally signing executables and scripts in order to confirm the software author, and guarantee that the code has not been altered or corrupted since it is signed by use of a cryptographic hash. Answer: A is
incorrect. A hypervisor is a virtualization technique that allows multiple operating systems (guests) to run concurrently on a host computer. It is also called the virtual machine monitor (VMM). The hypervisor provides a virtual operating platform to the guest operating systems and checks their execution process. It provides isolation to the host’s resources. The hypervisor is installed on server hardware. Answer: B is incorrect. Grid computing refers to the combination of computer resources from multiple administrative domains to achieve a common goal.
QUESTION NO: 115
Which of the following processes provides a standard set of activities, general tasks, and a management structure to certify and accredit systems, which maintain the information assurance and the security posture of a system or site?
210-250 vce Answer: B
Explanation: NIACAP is a process, which provides a standard set of activities, general tasks, and a management structure to certify and accredit systems that maintain the information assurance and the security posture of a system or site. Answer: D is incorrect. DITSCAP is a process, which establishes a standard process, a set of activities, general task descriptions, and a management structure to certify and accredit the IT systems that will maintain the required security posture. Answer: A is incorrect. The NSA-IAM evaluates information systems at a high level and uses a subset of the SSE-CMM process areas to measure the implementation of information security on these systems. Answer: C is incorrect. ASSET is a tool developed by NIST to automate the process of self-assessment through the use of the questionnaire in NIST.
QUESTION NO: 116
Which of the following security issues does the Bell-La Padula model focus on?
Explanation: The Bell-La Padula model is a state machine model used for enforcing access control in large organizations. It focuses on data confidentiality and access to classified information, in contrast to the Biba Integrity model, which describes rules for the protection of data integrity. In the Bell-La Padula model, the entities in an information system are divided into
subjects and objects. The Bell-La Padula model is built on the concept of a state machine with a set of allowable states in a computer network system. The transition from one state to another state is defined by transition functions. The model defines two mandatory access control (MAC) rules and one discretionary access control (DAC) rule with three security properties: 1.The Simple Security Property: A subject at a given security level may not read an object at a higher security level (no read-up). 2.The *-property (star-property): A subject at a given security level must not write to any object at a lower security level (no write-down). The *-property is also known as the Confinement property. 3.The Discretionary Security Property: It uses an access matrix to specify the discretionary access control.
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