Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Which statement best defines a Virtual Private Network (VPN)?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A VPN is a virtual network constructed over existing physical network infrastructure.
• It can provide protected communication between hosts or networks, commonly across public networks such as the Internet.
• A VPN is not necessarily a dedicated physical circuit and is distinct from antivirus software or an individual firewall rule.
• It can provide protected communication between hosts or networks, commonly across public networks such as the Internet.
• A VPN is not necessarily a dedicated physical circuit and is distinct from antivirus software or an individual firewall rule.
వివరణ:
Question 2
ప్రశ్న 2
What is a common purpose of an enterprise remote-access VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Remote-access VPNs provide secure connectivity for authorized users who are outside the organization's local network.
• Employees working from homes, hotels or other external locations can use them to reach permitted internal resources.
• Authentication and access controls remain important parts of secure remote access.
• Employees working from homes, hotels or other external locations can use them to reach permitted internal resources.
• Authentication and access controls remain important parts of secure remote access.
వివరణ:
Question 3
ప్రశ్న 3
An organization wants to securely connect the LAN at its headquarters with the LAN at a branch office across the public Internet, with VPN gateways located at both sites. Which VPN architecture best fits this requirement?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A gateway-to-gateway VPN establishes a protected connection between VPN gateways serving two networks.
• It is commonly used to connect fixed sites such as headquarters and branch offices over the Internet.
• Hosts behind the gateways can normally use the protected inter-site connection without each host establishing a separate VPN tunnel.
• It is commonly used to connect fixed sites such as headquarters and branch offices over the Internet.
• Hosts behind the gateways can normally use the protected inter-site connection without each host establishing a separate VPN tunnel.
వివరణ:
Question 4
ప్రశ్న 4
A police officer working remotely establishes an individual VPN connection from a laptop to the organization's VPN gateway and then accesses permitted internal servers. Which VPN architecture is being used?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In a host-to-gateway VPN, an individual remote host establishes a secure connection to an organization's VPN gateway.
• This architecture is widely used for remote employees accessing internal organizational resources.
• The protected tunnel normally extends from the remote host to the VPN gateway.
• This architecture is widely used for remote employees accessing internal organizational resources.
• The protected tunnel normally extends from the remote host to the VPN gateway.
వివరణ:
Question 5
ప్రశ్న 5
What does tunneling mean in the context of computer networking and VPNs?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Tunneling allows data from one network protocol to be carried through another network.
• This is achieved through encapsulation of the original network information within packets used by the carrying network.
• VPN technologies combine tunneling with appropriate security mechanisms to create protected virtual communication paths.
• This is achieved through encapsulation of the original network information within packets used by the carrying network.
• VPN technologies combine tunneling with appropriate security mechanisms to create protected virtual communication paths.
వివరణ:
Question 6
ప్రశ్న 6
Which set of security services can a properly configured secure VPN provide, depending on the VPN technology and configuration?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Secure VPN technologies can provide confidentiality through cryptographic protection of transmitted data.
• They can also provide integrity and authentication mechanisms to detect unauthorized modification and verify communicating parties or data origin.
• Technologies such as IPsec can additionally provide protections such as replay resistance and access control.
• They can also provide integrity and authentication mechanisms to detect unauthorized modification and verify communicating parties or data origin.
• Technologies such as IPsec can additionally provide protections such as replay resistance and access control.
వివరణ:
Question 7
ప్రశ్న 7
Before an organization allows a remote employee to establish authorized VPN access to protected internal resources, which security process is primarily used to verify that the employee is the claimed user?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Authentication verifies the identity claimed by a remote user or device.
• VPN deployments can use credentials such as passwords, certificates, cryptographic tokens or stronger multi-factor mechanisms.
• Authentication is distinct from authorization, which determines which resources the authenticated user may access.
• VPN deployments can use credentials such as passwords, certificates, cryptographic tokens or stronger multi-factor mechanisms.
• Authentication is distinct from authorization, which determines which resources the authenticated user may access.
వివరణ:
Question 8
ప్రశ్న 8
Which statement correctly describes the word 'virtual' in Virtual Private Network?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A VPN creates a logical or virtual network over existing network infrastructure.
• Public or shared networks such as the Internet can therefore carry protected VPN communications.
• The term 'virtual' does not mean that the communication is unreal or restricted to virtual machines.
• Public or shared networks such as the Internet can therefore carry protected VPN communications.
• The term 'virtual' does not mean that the communication is unreal or restricted to virtual machines.
వివరణ:
Question 9
ప్రశ్న 9
In a host-to-gateway remote-access VPN, the protected tunnel runs from the remote laptop to the organization's VPN gateway. Which statement about communication beyond that gateway is correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A host-to-gateway VPN protects communication between the remote host and the VPN gateway.
• Traffic beyond the gateway to an internal resource is not automatically protected by that same tunnel.
• Additional security mechanisms are needed when protection is required beyond the VPN tunnel endpoints.
• Traffic beyond the gateway to an internal resource is not automatically protected by that same tunnel.
• Additional security mechanisms are needed when protection is required beyond the VPN tunnel endpoints.
వివరణ:
Question 10
ప్రశ్న 10
What is split tunneling in a remote-access VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Split tunneling sends selected traffic, such as organization-specific traffic, through the VPN tunnel.
• Other traffic can use the remote system's normal network path instead of passing through the organization's VPN gateway.
• This differs from full tunneling, in which all applicable network traffic is routed through the organizational VPN.
• Other traffic can use the remote system's normal network path instead of passing through the organization's VPN gateway.
• This differs from full tunneling, in which all applicable network traffic is routed through the organizational VPN.
వివరణ:
Question 11
ప్రశ్న 11
What does full tunneling mean in the context of an enterprise remote-access VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Full tunneling routes the remote system's network traffic through the VPN tunnel to the organization.
• This permits organizational security controls to inspect or manage traffic that would otherwise use the remote user's local Internet path.
• Split tunneling differs because some traffic bypasses the organizational VPN tunnel.
• This permits organizational security controls to inspect or manage traffic that would otherwise use the remote user's local Internet path.
• Split tunneling differs because some traffic bypasses the organizational VPN tunnel.
వివరణ:
Question 12
ప్రశ్న 12
Which statement most accurately compares a firewall with a VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A firewall controls whether network traffic is permitted or denied according to configured security rules.
• A VPN provides a protected logical communication path over an existing network such as the Internet.
• The functions are complementary, and VPN functionality may even be integrated into a firewall or router.
• A VPN provides a protected logical communication path over an existing network such as the Internet.
• The functions are complementary, and VPN functionality may even be integrated into a firewall or router.
వివరణ:
Question 13
ప్రశ్న 13
Which statement most accurately distinguishes encryption from a VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Encryption is a cryptographic mechanism used to protect data confidentiality.
• A secure VPN is a broader communication system that can employ encryption together with tunneling and other security services.
• Therefore encryption may be one component of VPN security, but the two concepts are not identical.
• A secure VPN is a broader communication system that can employ encryption together with tunneling and other security services.
• Therefore encryption may be one component of VPN security, but the two concepts are not identical.
వివరణ:
Question 14
ప్రశ్న 14
Why does deploying a VPN not eliminate the need for firewall protection?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• VPNs and firewalls perform complementary rather than identical security functions.
• A VPN can protect communication across an untrusted network, while firewall rules control which communications are authorized to cross network boundaries.
• Many enterprise security designs therefore use VPN and firewall functionality together.
• A VPN can protect communication across an untrusted network, while firewall rules control which communications are authorized to cross network boundaries.
• Many enterprise security designs therefore use VPN and firewall functionality together.
వివరణ:
Question 15
ప్రశ్న 15
Which technology is a widely used network-layer security framework for creating protected VPN communications over IP networks?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• IPsec stands for Internet Protocol Security and provides security services at the network layer.
• It is widely used to construct VPNs that protect IP communications between hosts or network gateways.
• IPsec can provide services including confidentiality, integrity and authentication depending on its configuration.
• It is widely used to construct VPNs that protect IP communications between hosts or network gateways.
• IPsec can provide services including confidentiality, integrity and authentication depending on its configuration.
వివరణ:
Question 16
ప్రశ్న 16
Which statement correctly describes a TLS-based remote-access VPN, historically often called an SSL VPN?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Remote-access VPN technologies historically called SSL VPNs now commonly use TLS rather than the obsolete SSL protocols.
• They can provide protected remote access to web applications, client/server applications or internal networks.
• Such VPNs use cryptographically protected communication over existing IP network infrastructure.
• They can provide protected remote access to web applications, client/server applications or internal networks.
• Such VPNs use cryptographically protected communication over existing IP network infrastructure.
వివరణ:
Question 17
ప్రశ్న 17
A remote laptop is already infected with malware before it establishes an authenticated VPN connection to an organization's network. Which statement is correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• VPN security protects communications but does not automatically make the participating endpoint trustworthy or malware-free.
• A compromised remote device can still create security risk when it is allowed to access organizational resources through a VPN.
• Endpoint security measures such as patching, antivirus protection and appropriate access controls remain necessary.
• A compromised remote device can still create security risk when it is allowed to access organizational resources through a VPN.
• Endpoint security measures such as patching, antivirus protection and appropriate access controls remain necessary.
వివరణ:
Question 18
ప్రశ్న 18
An employee using hotel Wi-Fi needs secure access to an internal organizational application that is not publicly exposed. Which solution most directly addresses the requirement?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Remote-access VPNs are specifically intended to connect authorized users on external networks to protected organizational resources.
• The VPN can establish a protected tunnel across an untrusted network such as hotel Wi-Fi and the Internet.
• A local firewall alone controls traffic but does not create secure remote connectivity to the organization's internal network.
• The VPN can establish a protected tunnel across an untrusted network such as hotel Wi-Fi and the Internet.
• A local firewall alone controls traffic but does not create secure remote connectivity to the organization's internal network.
వివరణ:
Question 19
ప్రశ్న 19
Consider the following statements about VPNs:
1. A VPN can provide secure communication over an existing public network.
2. Gateway-to-gateway VPNs are commonly used to connect fixed organizational sites.
3. Split tunneling means that all traffic must pass through the organizational VPN tunnel.
4. A VPN reduces communication risks but does not eliminate every network or endpoint security risk.
Which statements are correct?
1. A VPN can provide secure communication over an existing public network.
2. Gateway-to-gateway VPNs are commonly used to connect fixed organizational sites.
3. Split tunneling means that all traffic must pass through the organizational VPN tunnel.
4. A VPN reduces communication risks but does not eliminate every network or endpoint security risk.
Which statements are correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Statements 1 and 2 correctly describe VPN protection over existing networks and the common gateway-to-gateway site-connection model.
• Statement 3 is false because routing all traffic through the organizational VPN describes full tunneling rather than split tunneling.
• Statement 4 is correct because VPN technology reduces particular communication risks but cannot eliminate all endpoint, configuration or software risks.
• Statement 3 is false because routing all traffic through the organizational VPN describes full tunneling rather than split tunneling.
• Statement 4 is correct because VPN technology reduces particular communication risks but cannot eliminate all endpoint, configuration or software risks.
వివరణ:
Question 20
ప్రశ్న 20
Match List I with List II:
List I
(a) Gateway-to-gateway VPN
(b) Host-to-gateway VPN
(c) Split tunneling
(d) Full tunneling
List II
1. Connects an individual remote host securely to an organizational VPN gateway
2. Routes organization-specific traffic through the VPN while other traffic can use another network path
3. Connects two networks through VPN gateways at the respective sites
4. Routes all network traffic through the organizational VPN tunnel according to the configured policy
Choose the correct matching code.
List I
(a) Gateway-to-gateway VPN
(b) Host-to-gateway VPN
(c) Split tunneling
(d) Full tunneling
List II
1. Connects an individual remote host securely to an organizational VPN gateway
2. Routes organization-specific traffic through the VPN while other traffic can use another network path
3. Connects two networks through VPN gateways at the respective sites
4. Routes all network traffic through the organizational VPN tunnel according to the configured policy
Choose the correct matching code.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Gateway-to-gateway connects networks through their respective VPN gateways, giving (a)-3.
• Host-to-gateway connects an individual remote host to a VPN gateway, giving (b)-1.
• Split tunneling gives (c)-2, while routing all traffic through the organizational VPN corresponds to full tunneling, giving (d)-4.
• Host-to-gateway connects an individual remote host to a VPN gateway, giving (b)-1.
• Split tunneling gives (c)-2, while routing all traffic through the organizational VPN corresponds to full tunneling, giving (d)-4.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: C. A virtual network built over existing networks that can provide a secure communication mechanism between hosts or networks సమాధానం: C.
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Question 2 ప్రశ్న 2Answer: A. To allow authorized users at external locations to securely access organizational network resources సమాధానం: A.
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Question 3 ప్రశ్న 3Answer: D. Gateway-to-gateway VPN సమాధానం: D.
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Question 4 ప్రశ్న 4Answer: B. Host-to-gateway VPN సమాధానం: B.
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Question 5 ప్రశ్న 5Answer: B. Encapsulating one network protocol or its packets within packets carried by another network సమాధానం: B.
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Question 6 ప్రశ్న 6Answer: D. Confidentiality, integrity, authentication and other communication-protection services సమాధానం: D.
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Question 7 ప్రశ్న 7Answer: A. Authentication సమాధానం: A.
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Question 8 ప్రశ్న 8Answer: C. The private logical communication path is created over existing physical network infrastructure rather than necessarily requiring a dedicated physical line. సమాధానం: C.
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Question 9 ప్రశ్న 9Answer: A. The VPN tunnel by itself protects communication only up to the VPN gateway; traffic between that gateway and an internal destination needs other protection if end-to-end protection is required. సమాధానం: A.
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Question 10 ప్రశ్న 10Answer: C. Routing organization-specific traffic through the VPN while allowing other traffic to use the remote device's ordinary network gateway సమాధానం: C.
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Question 11 ప్రశ్న 11Answer: B. All network traffic from the remote device is routed through the VPN tunnel to the organization according to the configured full-tunnel policy. సమాధానం: B.
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Question 12 ప్రశ్న 12Answer: D. A firewall primarily controls network traffic according to security policy, while a VPN primarily provides protected communication across an existing network. సమాధానం: D.
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Question 13 ప్రశ్న 13Answer: D. Encryption is a cryptographic mechanism for transforming data to protect confidentiality, whereas a VPN is a broader networking solution that may use encryption along with tunneling, authentication and integrity protection. సమాధానం: D.
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Question 14 ప్రశ్న 14Answer: B. A VPN protects communication over its tunnel, while a firewall still performs policy-based control over which network traffic and resources are permitted. సమాధానం: B.
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Question 15 ప్రశ్న 15Answer: C. IPsec సమాధానం: C.
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Question 16 ప్రశ్న 16Answer: A. It can use TLS-based secure communication to provide remote users with protected access to organizational applications or networks. సమాధానం: A.
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Question 17 ప్రశ్న 17Answer: B. The VPN can protect communication through its tunnel, but it does not by itself guarantee that the endpoint is free from malware. సమాధానం: B.
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Question 18 ప్రశ్న 18Answer: A. Establish an authenticated remote-access VPN from the employee's device to the organization's VPN gateway. సమాధానం: A.
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Question 19 ప్రశ్న 19Answer: D. 1, 2 and 4 only సమాధానం: D.
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Question 20 ప్రశ్న 20Answer: C. (a)-3, (b)-1, (c)-2, (d)-4 సమాధానం: C.