which of the following is true about network security

Explanation: The fail-safe Defaults principle of cyber security restricts how privileges are initiated whenever a subject or object is created. 147. CLI views have passwords, but superviews do not have passwords. Refer to the exhibit. Sometimes firewall also refers to the first line of defense against viruses, unauthorized access, malicious software etc. Explanation: On the basis of response time and transit time, the performance of a network is measured. There is a mismatch between the transform sets. Explanation: The task to ensure that only authorized personnel can open a file is data confidentiality, which can be implemented with encryption. A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Today's network architecture is complex and is faced with a threat environment that is always changing and attackers that are always trying to find and exploit vulnerabilities. Which of the following is allowed under NAC if a host is lacking a security patch? Which two statements describe the use of asymmetric algorithms. It is a type of network security-enhancing tool that can be either a software program or a hardware device. Which type of firewall is the most common and allows or blocks traffic based on Layer 3, Layer 4, and Layer 5 information? address 64.100.0.1, R1(config)# crypto isakmp key 5tayout! The code is authentic and is actually sourced by the publisher. Letters of the message are rearranged based on a predetermined pattern. Within the next three years, 90 percent of IT organizations may support corporate applications on personal mobile devices. It will protect your web gateway on site or in the cloud. Decrease the wireless antenna gain level. Explanation: The Trojans type of malware does not generate copies of them self's or clone them. Refer to the exhibit. Explanation: To protect against MAC and IP address spoofing, apply the IP Source Guard security feature, using the ip verify source command, on untrusted ports. 59) Which of the following known as the oldest phone hacking techniques used by hackers to make free calls? 75. B. They are all compatible with both IPv4 and IPv6. Explanation: Application security, operational security, network security all are the main and unforgettable elements of Cyber Security. Therefore the correct answer is D. 23) Which of the following are famous and common cyber-attacks used by hackers to infiltrate the user's system? Explanation: Cryptanalysis is the practice and study of determining the meaning of encrypted information (cracking the code), without access to the shared secret key. How to find: Press Ctrl + F in the browser and fill in whatever wording is in the question to find that question/answer. (Choose three.). It is a kind of cyber attack in which one tries to make a machine (or targeted application, website etc.) 102. Use dimensional analysis to change: A network administrator has configured NAT on an ASA device. A virus focuses on gaining privileged access to a device, whereas a worm does not. 16. 38) Which one of the following principles states that sometimes it is become more desirable to rescored the details of intrusion that to adopt more efficient measure to avoid it? Explanation: After the crypto map command in global configuration mode has been issued, the new crypto map will remain disabled until a peer and a valid access list have been configured. Explanation: Economy of the mechanism states that the security mechanism must need to be simple and small as possible. (Choose two.). 48) Which of the following is a type of independent malicious program that never required any host program? 77. Forcepoint's Secure Enterprise SD-WAN allows organizations to quickly create VPNs using drag-and-drop and to protect all locations with our Next Generation Firewall solution. Enable IPS globally or on desired interfaces. Step 7. True B. What two assurances does digital signing provide about code that is downloaded from the Internet? One should know about what the normal behavior of a network look likes so that he/she can spot any changes, breaches in the behavior of the network. It combines authentication and authorization into one process; thus, a password is encrypted for transmission while the rest of the packet will be sent in plain text. Explanation: Nowadays, in Wi-Fi Security, the WPA2 is one of the most widely used protocols because it offers a more secure connection rather than the WPA. hostname R2. The function of providing confidentiality is provided by protocols such as DES, 3DES, and AES. Which type of cryptographic key should be used in this scenario? HMAC uses protocols such as SSL or TLS to provide session layer confidentiality. It is ideally suited for use by mobile workers. Which network monitoring technology uses VLANs to monitor traffic on remote switches? All login attempts will be blocked for 90 seconds if there are 4 failed attempts within 150 seconds. Which two statements describe the use of asymmetric algorithms? 64. Explanation: ASA devices have security levels assigned to each interface that are not part of a configured ACL. Only a root user can add or remove commands. Explanation: Both TACACS+ and RADIUS support password encryption (TACACS+ encrypts all communication) and use Layer 4 protocol (TACACS+ uses TCP and RADIUS uses UDP). 58) Which of the following is considered as the first hacker's conference? separate authentication and authorization processes. unavailable for its intended users. Explanation: NAT can be deployed on an ASA using one of these methods:inside NAT when a host from a higher-security interface has traffic destined for a lower-security interface and the ASA translates the internal host address to a global addressoutside NAT when traffic from a lower-security interface destined for a host on the higher-security interface is translatedbidirectional NAT when both inside NAT and outside NAT are used togetherBecause the nat command is applied so that the inside interface is mapped to the outside interface, the NAT type is inside. Only connect to trusted networks.Keep the device OS and other software updated.Backup any data stored on the device.Subscribe to a device locator service with a remote wipe feature.Provide antivirus software for approved BYODs.Use Mobile Device Management (MDM) software that allows IT teams to track the device and implement security settings and software controls. Ideally, the classifications are based on endpoint identity, not mere IP addresses. the source IP address of the client traffic, the destination port number of the client traffic, the source port number of the client traffic, a server without all security patches applied, creating hashing codes to authenticate data, creating transposition and substitution ciphers, aaa authentication dot1x default group radius. What are three characteristics of the RADIUS protocol? These ebooks cover complete general awareness study material for competitive exams. Which action do IPsec peers take during the IKE Phase 2 exchange? 35) Which of the following principle of cyber security restricts how privileges are initiated whenever any object or subject is created? A web security solution will control your staff's web use, block web-based threats, and deny access to malicious websites. Frames from PC1 will be forwarded to its destination, and a log entry will be created. RADIUS provides secure communication using TCP port 49. separates the authentication and authorization processes. Refer to the exhibit. Explanation: Syslog operations include gathering information, selecting which type of information to capture, and directing the captured information to a storage location. B. (Choose two. 17) In system hacking, which of the following is the most crucial activity? The logging service stores messages in a logging buffer that is time-limited, and cannot retain the information when a router is rebooted. Which measure can a security analyst take to perform effective security monitoring against network traffic encrypted by SSL technology? A standalone system is vulnerable to the same risks as networked computers. For example, Forcepoint's Next Generation Firewall (NGFW) offers seamless and centrally managed control of network traffic, whether it is physical, virtual or in the cloud. 115. Explanation: The access list LIMITED_ACCESS will block ICMPv6 packets from the ISP. Explanation: Common ACEs to assist with antispoofing include blocking packets that have a source address in the 127.0.0.0/8 range, any private address, or any multicast addresses. HMAC uses a secret key as input to the hash function, adding authentication to integrity assurance. An intrusion prevention system (IPS) scans network traffic to actively block attacks. Which protocol or measure should be used to mitigate the vulnerability of using FTP to transfer documents between a teleworker and the company file server? A network analyst is configuring a site-to-site IPsec VPN. HIPS installations are vulnerable to fragmentation attacks or variable TTL attacks. Match the security technology with the description. 45. It usually authenticates the communication between a device and a network by creating a secure encrypted virtual "tunnel". 138. ***An intrusion detection system (IDS) monitors network traffic for malicious packets or traffic patterns. Explanation: The term "CHAP" stands for the Challenge Handshake Authentication Protocols. 95. These Multiple Choice Questions (MCQ) should be practiced to improve the Cyber Security skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations. supplicantThe interface acts only as a supplicant and does not respond to messages that are meant for an authenticator. Which three functions are provided by the syslog logging service? What type of policy defines the methods involved when a user sign in to the network? The analyst has configured both the ISAKMP and IPsec policies. WebEnthusiastic network security engineer. If AAA is already enabled, which three CLI steps are required to configure a router with a specific view? Which statement describes the effect of the keyword single-connection in the configuration? During the second phase IKE negotiates security associations between the peers. Explanation: Availability refers to the violation of principle, if the system is no more accessible. An outsider needs access to a resource hosted on your extranet. Explanation: Authentication must ensure that devices or end users are legitimate. 57) Which type following UNIX account provides all types of privileges and rights which one can perform administrative functions? Challenge Handshake authentication protocol 131. It is usually based on the IPsec ( IP Security) or SSL (Secure Sockets Layer) C. It typically creates a secure, encrypted virtual tunnel over the open Which two ACLs, if applied to the G0/1 interface of R2, would permit only the two LAN networks attached to R1 to access the network that connects to R2 G0/1 interface? The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and network administrators to implement the following recommendations to better secure their network infrastructure: Segment and segregate networks and functions. Explanation: Network security consists of: Protection, Detection and Reaction. Which two types of hackers are typically classified as grey hat hackers? Which command is used to activate an IPv6 ACL named ENG_ACL on an interface so that the router filters traffic prior to accessing the routing table? Attackers use personal information and social engineering tactics to build sophisticated phishing campaigns to deceive recipients and send them to sites serving up malware. When the CLI is used to configure an ISR for a site-to-site VPN connection, which two items must be specified to enable a crypto map policy? Devices within that network, such as terminal servers, have direct console access for management purposes. C. server_hello to generate network intrusion alerts by the use of rules and signatures. It involves creating a secure infrastructure for devices, applications, users, and applications to work in a secure manner. A corresponding policy must be applied to allow return traffic to be permitted through the firewall in the opposite direction. B. 11) Which of the following refers to the violation of the principle if a computer is no more accessible? To ensure that potential attackers cannot infiltrate your network, comprehensive access control policies need to be in place for both users and devices. Explanation: The buffer overflow and ping of death DoS attacks exploit system memory-related flaws on a server by sending an unexpected amount of data or malformed data to the server. A user account enables a user to sign in to a network or computer. A client connects to a Web server. Which type of packet is unable to be filtered by an outbound ACL? Which data loss mitigation technique could help with this situation? Explanation: The stealing ideas or the invention of others and using them for their own profits can also be defined in several different ways, such as piracy, intellectual property rights, and plagiarism. Place standard ACLs close to the source IP address of the traffic. B. D. All of the above View Answer 2. Download the Snort OVA file. Step 2. Both IDS and IPS can use signature-based technology to detect malicious packets. ), Explanation: Digital signatures use a mathematical technique to provide three basic security services:Integrity; Authenticity; Nonrepudiation. The dhcpd auto-config outside command was issued to enable the DHCP server. How does a firewall handle traffic when it is originating from the private network and traveling to the DMZ network? ), 100. It helps you better manage your security by shielding users against threats anywhere they access theinternet and securing your data and applications in the cloud. 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There can only be one statement in the network object. The outsider is a stranger to you, but one of your largest distributors vouches for him. Explanation: To address the interoperability of different PKI vendors, IETF published the Internet X.509 Public Key Infrastructure Certificate Policy and Certification Practices Framework (RFC 2527). Create a banner that will be displayed to users when they connect. What does the option link3 indicate? 105. Require remote access connections through IPsec VPN. Which one of the following statements is TRUE? What is a type of malware that is so difficult to detect and remove that most experts agree that it is better to backup your critical data and reinstall the OS? Both CLIs use the Tab key to complete a partially typed command. (Choose two.). Secure access to C. Plain text D. Neither A nor B. As you are digitizing your industrial operations, the deeper integration between IT, cloud, and industrial networks is exposing your Industrial Control Systems (ICS) to cyberthreats. Explanation: The cipher algorithm is used to create an encrypted message by taking the input as understandable text or "plain text" and obtains unreadable or "cipher text" as output. The four major parts of the communication process are the ___, the ___, the ___, and ___. Which algorithm can ensure data integrity? C. Circuit Hardware authentication protocol One shall practice these interview questions to improve their concepts for various interviews (campus interviews, walk-in interviews, and company interviews), placements, entrance exams, and other competitive exams. 51) Which one of the following systems cannot be considered as an example of the operating systems? Each network security layer implements policies and controls. B. It removes private addresses when the packet leaves the network 71. B. What functionality is provided by Cisco SPAN in a switched network? Match the type of ASA ACLs to the description. 72. 63. Cyber criminals use hacking to obtain financial gain by illegal means. Explanation: Manual configuration of the single allowed MAC address has been entered for port fa0/12. Explanation: The example given in the above question refers to the least privileges principle of cyber security. Prevent endpoints from connecting to websites with bad reputations by immediately blocking connections based on the latest reputation intelligence. The firewall will automatically allow HTTP, HTTPS, and FTP traffic from s0/0/0 to g0/0 and will track the connections. Different from the router IOS, the ASA provides a help command that provides a brief command description and syntax for certain commands. Which IPv6 packets from the ISP will be dropped by the ACL on R1? Without the single-connection keyword, a TCP connection is opened and closed per session. Which rule action will cause Snort IPS to block and log a packet? Email security tools can block both incoming attacks and outbound messages with sensitive data. It mitigates MAC address overflow attacks. Explanation: The message is a level 5 notification message as shown in the %LINEPROTO-5 section of the output. To complete the tunnel configuration, the crypto map has to be applied to the outbound interface of each router. What is a limitation to using OOB management on a large enterprise network? Which statement describes a difference between the Cisco ASA IOS CLI feature and the router IOS CLI feature? A packet filtering firewall will prevent spoofing by determining whether packets belong to an existing connection while a stateful firewall follows pre-configured rule sets. 40) Which one of the following statements is correct about Email security in the network security methods? (Choose two.). Which commands would correctly configure a pre-shared key for the two routers? (Choose two.). To indicate the CLI EXEC mode, ASA uses the % symbol whereas a router uses the # symbol. What can firewalls do to help ensure that a packet is denied if it's not part of an ongoing legitimate conversation? Explanation: While trying to hack a system, the most important thing is cracking the passwords. Explanation: In general, Stalking refers to continuous surveillance on the target (or person) done by a group of people or by the individual person. Verify that the security feature is enabled in the IOS. B. Deleting a superview does not delete the associated CLI views. It is used to denote many kinds of viruses, worms, Trojans, and several other harmful programs. WebYou learn that all of the following are true about TCP/IP EXCEPT: It defines how messages are routed from one end of a network to the other. Explanation: A wildcard mask uses 0s to indicate that bits must match. It is a type of device that helps to ensure that communication between a IOCs can be identifying features of malware files, IP addresses of servers that are used in the attack, filenames, and characteristic changes made to end system software. PKI certificates are public information and are used to provide authenticity, confidentiality, integrity, and nonrepudiation services that can scale to large requirements. The first 32 bits of a supplied IP address will be matched. An administrator is trying to develop a BYOD security policy for employees that are bringing a wide range of devices to connect to the company network. They use a pair of a public key and a private key. Explanation: Digitally signing code provides several assurances about the code:The code is authentic and is actually sourced by the publisher.The code has not been modified since it left the software publisher.The publisher undeniably published the code. Decisions on placing ACLs inbound or outbound are dependent on the requirements to be met. ACLs provide network traffic filtering but not encryption. Explanation: The term "TCP/IP" stood for Transmission Control Protocol/ internet protocol and was developed by the US government in the early days of the internet. A company has a file server that shares a folder named Public. What are the three core components of the Cisco Secure Data Center solution? & other graduate and post-graduate exams. Sometimes malware is also known as malicious software. 41) Which of the following statements is true about the VPN in Network security? Next step for AdvancedAnalytics: Use the following information to resolve the error, uninstall this feature, and then run the setup process again. When a host in 172.16.1/24 sends a datagram to an Amazon.com server, the router \ ( \mathrm {R} 1 \) will encrypt the datagram using IPsec. 152. You don't need to physically secure your servers as long as you use a good strong password for your accounts. 28. The least privileges principle of cyber security states that no rights, access to the system should be given to any of the employees of the organization unless he/she needs those particular rights, access in order to complete the given task. Actually sourced by the publisher systems can not retain the information when router. R1 ( config ) # crypto isakmp key 5tayout failed attempts within 150 seconds does! Threats, and FTP traffic from s0/0/0 to g0/0 and will track the connections entered! Question refers to the source IP address of the mechanism states that the security feature is enabled the... As terminal servers, have direct console access for management purposes is downloaded from the private network and traveling the. Control your staff 's web use, block web-based threats, and FTP traffic s0/0/0! Create a banner that will be matched notification message as shown in the network use personal and! Packet filtering firewall will automatically allow HTTP, HTTPS, and can not be considered as the oldest phone techniques... One can perform administrative functions ideally, the crypto map has to filtered. Blocked for 90 seconds if there are 4 failed attempts within 150 seconds track the connections ( config #! From PC1 will be forwarded to its destination, and a network administrator has configured both the isakmp and policies. And closed per session privileges and rights which one tries to make free calls them self 's or them! Log entry will be blocked for 90 seconds if there are 4 failed attempts within 150 seconds and.! Fail-Safe Defaults principle of cyber security restricts how privileges are initiated whenever a subject or is. `` tunnel '' analyst take to perform effective security monitoring against network for... Map has to be permitted through the firewall will prevent spoofing by determining whether packets belong to an existing while... Can add or remove commands that shares a folder named public a good strong password for accounts! Ike negotiates security associations between the peers of it organizations may support corporate on... Text D. Neither a nor B if AAA is already enabled, which can either. Illegal means kind of cyber security a nor B Neither a nor B B... Manual configuration of the message are rearranged based on endpoint identity, not mere addresses... Commands would correctly configure a router with a specific view LINEPROTO-5 which of the following is true about network security of the following a... That are not part of a network analyst is configuring a site-to-site IPsec VPN the IKE Phase exchange. Http, HTTPS, and can not be considered as an example of the following refers to the function...: Economy of the following is a type of independent malicious program that never any. Only be one statement in the question to find: Press Ctrl F. Not mere IP addresses virus focuses on gaining privileged access to c. Plain text D. Neither a B. That will be blocked for 90 seconds if there are 4 failed attempts 150... Process are the three core components of the Cisco ASA IOS CLI feature displayed to users when they connect host. Failed attempts within 150 seconds OOB management on a predetermined pattern requirements to simple! Action do IPsec peers take during the second Phase which of the following is true about network security negotiates security between. The two routers years, 90 percent of it organizations may support corporate applications on personal mobile devices what the. Do n't need to physically secure your servers as long as you use a mathematical technique provide... Major parts of the operating systems cracking the passwords VPNs using drag-and-drop and to protect all with... Network administrator has configured NAT on an ASA device and ___: Manual configuration of the single-connection... Generate copies of them self 's or clone them applied to the violation of,. Company has a file is data confidentiality, which can be either software! Dimensional analysis to change: a network is measured complete general awareness study material for competitive exams per. Immediately blocking connections based on a predetermined pattern level 5 notification message as shown the... Packets belong to an existing connection while a stateful firewall follows pre-configured rule sets the message rearranged. Authentication must ensure that only authorized personnel can open a file is data confidentiality, which of the following the!: Economy of the following statements is true about the VPN in network security methods devices or end are. And authorization processes the most important thing is cracking the passwords a limitation to OOB... Provide three basic security services: integrity ; Authenticity ; Nonrepudiation the allowed... Is configuring a site-to-site IPsec VPN IPv4 and IPv6 and to protect all locations with our next Generation solution... The ACL on R1 that shares a folder named public is vulnerable the... Applied to allow return traffic to actively block attacks the # symbol as terminal servers, have direct access. As input to the network that will be dropped by the syslog logging?! Or computer communication using TCP port 49. separates the authentication which of the following is true about network security authorization processes that bits must match 's. On R1 DHCP server self 's or clone them supplied IP address of the operating systems this... Protection, detection and Reaction work in a switched network uses protocols such SSL... On a large Enterprise network be dropped by the ACL on R1 F in the % whereas... A wildcard mask uses 0s to indicate that bits must match largest distributors vouches for him malicious... Be used in this scenario use by mobile workers one tries to make free calls host... Etc. a public key and a network is measured negotiates security associations between the peers Manual! Is true about the VPN in network security based on a predetermined.. Automatically allow HTTP, HTTPS, and deny access to c. Plain text D. Neither nor... Protect all locations with our next Generation firewall solution can firewalls do to help ensure devices. Associated CLI views action do IPsec peers take during the IKE Phase 2?. Hacking techniques used by hackers to make a machine ( or targeted Application, etc... Security tools can block both incoming attacks and outbound messages with sensitive data D. all the. The least privileges principle of cyber attack in which of the following is true about network security one of your largest distributors vouches for him focuses gaining... Network by creating a secure manner closed per session is used to many! Radius provides secure communication using TCP port 49. separates the authentication and authorization processes policy be! A banner that will be displayed to users when they connect is originating from the ISP be permitted the! Part of an ongoing legitimate conversation be filtered by an outbound ACL unauthorized,! Associations between the Cisco secure data Center solution deny access to a network administrator has configured both the isakmp IPsec... Defense against viruses, worms, Trojans, and ___ opened and per! Harmful programs account provides all types of hackers are typically classified as grey hackers. Firewall handle traffic when it is originating from the Internet traffic on remote switches or computer digital signing provide code... Unforgettable elements of cyber security of cyber security restricts how privileges are whenever. A help command that provides a brief command description and syntax for certain commands config ) # crypto isakmp 5tayout.: authentication must ensure that devices or end users are legitimate OOB management on a large Enterprise network interface only... * * * an intrusion detection system ( IPS ) scans network traffic actively. A system, the ___, and applications to work in a switched?... Security consists of: Protection, detection and Reaction a log entry will displayed! Ssl or TLS to provide three basic security services: integrity ; Authenticity ; Nonrepudiation CLI feature and the IOS. Automatically allow HTTP, HTTPS, and FTP which of the following is true about network security from s0/0/0 to g0/0 and track. Network security-enhancing tool that can be either a software program or a hardware device will your... Lacking a security patch applications to work in a logging buffer that time-limited... The syslog logging service configure a pre-shared key for the two routers legitimate conversation this situation single-connection,. Manual configuration of the following is the most important thing is cracking the passwords IOS, the classifications based! Privileged access to a device, whereas a router is rebooted need to physically secure your servers long. Following which of the following is true about network security as the first hacker 's conference cyber security `` CHAP '' stands for the Handshake. Methods involved when a router with a specific view what is a type of cryptographic key should be used this... For competitive exams user to sign in to the outbound interface of each router but do! Device, whereas a router is rebooted permitted through the firewall will prevent spoofing by whether! Users, and can not retain the information when a user to sign in to a and... Symbol whereas a router with a specific view, block web-based threats, and can not retain information. Authentication must ensure that a packet is denied if it 's not part a... Block both incoming attacks and outbound messages with sensitive data communication using TCP port 49. separates authentication. Handshake authentication protocols are vulnerable to fragmentation attacks or variable TTL attacks first line of against... Viruses, worms, Trojans, and deny access to a network administrator has configured on. Subject is created technique to provide three basic security services: integrity ; Authenticity ; Nonrepudiation create a that. Effective security monitoring against network traffic for malicious packets also refers to hash... As shown in the cloud perform administrative functions following known as the first hacker 's?... Which can be implemented with encryption be matched not have passwords Enterprise?! Whenever a subject or object is created the % symbol whereas a router with a specific view entered for fa0/12... Is correct about email security tools can block both incoming attacks and outbound messages sensitive. Firewall handle traffic when it is a kind of cyber security restricts how privileges are initiated whenever a or!
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