View Full Citrix 1Y0-342 Exam Dumps and Practice Test Dumps.

Question 381. What is the default NetScaler load balancing method

1. Round Robin
2. Source IP Hash
3. Least Connections
4. Least Bandwidth

Correct Answer: 3. Least Connections

Explanation:

Least Connections is the default load balancing method on NetScaler. The appliance sends each new client connection to the available backend service that currently has the fewest active connections. This method provides a practical way to distribute workload when connection count gives a useful indication of server utilization. Administrators can select other load balancing methods when application characteristics require different behavior. The virtual server performs the service selection only among healthy services according to monitor results. If a service becomes unavailable, it is excluded from normal selection until monitoring reports that it has recovered.

Question 382. How many virtual servers can one service be bound to

1. 500
2. 100
3. 250
4. 1000

Correct Answer: 1. 500

Explanation:

One NetScaler service can be bound to a maximum of five hundred virtual servers. A service represents a backend application endpoint identified by an address, port, and protocol. Binding the same service to multiple virtual servers allows several front end applications or connection points to use the same backend application instance when the design requires it. Administrators should still plan bindings carefully because each virtual server can have different persistence, load balancing, SSL, and policy requirements. Monitoring remains associated with the service so its health can influence every virtual server that depends on that backend endpoint.

Question 383. When does a domain based service update to a newly resolved IP address

1. Immediately after any DNS reply
2. Only after appliance restart
3. Only after manual approval
4. After the new address passes its health check

Correct Answer: 4. After the new address passes its health check

Explanation:

When a domain based backend server resolves to a different IP address, NetScaler does not blindly replace the current service address. The monitor bound to that service first probes the newly resolved address. NetScaler updates the service IP address only when the new address is found to be healthy. This behavior combines dynamic DNS based discovery with application health validation. It is especially useful in cloud environments where backend addresses can change frequently. The configuration therefore adapts to DNS changes without automatically directing production requests toward a newly resolved server that is unavailable or unhealthy.

Question 384. How many test IP addresses can a DNS monitor compare

1. Two
2. Five
3. Ten
4. Twenty

Correct Answer: 2. Five

Explanation:

A NetScaler DNS monitor can compare the address returned by its DNS query against a list containing up to five configured test IP addresses. If the resolved IP address matches at least one address in the list, the DNS service is considered healthy. If the response does not match any configured address, the service can be marked down. DNS and DNS TCP monitors provide application aware health checking because they validate the actual DNS response instead of checking only basic network reachability. This helps administrators verify that a DNS server is returning the expected information for a configured domain.

Question 385. When is a load balancing virtual server normally UP

1. When at least one bound service is UP
2. Only when every service is UP
3. Only when persistence is enabled
4. When no monitors exist

Correct Answer: 1. When at least one bound service is UP

Explanation:

A load balancing virtual server without a backup virtual server is normally considered UP when at least one of its bound services is UP. If every bound service is down, the virtual server becomes down because there is no healthy backend destination available for new client traffic. The state can also be affected when the load balancing feature itself is disabled or when the administrator deliberately disables the virtual server. Monitoring therefore plays a direct role in front end application availability because monitor results determine service state, and service state in turn influences the state of the virtual server.

Question 386. What can keep the effective state of a primary virtual server UP when its own services are down

1. Integrated Caching
2. Source IP persistence
3. An available backup virtual server
4. An expired SSL certificate

Correct Answer: 3. An available backup virtual server

Explanation:

When a backup virtual server is configured, the effective state of the primary can remain UP if an available virtual server exists somewhere in the backup chain. This is true even when all services directly bound to the primary are down. The effective state represents whether the application can still be delivered through the configured failover design rather than only the condition of the primary server farm. NetScaler can therefore distinguish the primary state from the effective service availability presented to users. Backup virtual server chains provide application resilience when the preferred backend group becomes unavailable.

Question 387. What does DOWN WHEN GOING OUT OF SERVICE mean

1. The service has no monitor
2. A monitor failed while the service was leaving service
3. The virtual server was deleted
4. The backend was never enabled

Correct Answer: 2. A monitor failed while the service was leaving service

Explanation:

DOWN WHEN GOING OUT OF SERVICE occurs when a monitoring probe fails while a service is already transitioning toward the Out of Service state. A service can first enter Going Out of Service because it was disabled with a delay or because graceful shutdown is allowing active transactions to complete. If a health monitor then fails during that transition, the state changes accordingly. This provides more precise operational information than simply showing the service as down. Administrators can distinguish an ordinary health failure from a failure that happened while the backend was already being intentionally withdrawn from production.

Question 388. What happens when Disable Primary When Down is enabled and the primary later recovers

1. Traffic instantly returns to the primary
2. Both virtual servers are deleted
3. The backup becomes disabled
4. Traffic stays on the backup until the primary is enabled manually

Correct Answer: 4. Traffic stays on the backup until the primary is enabled manually

Explanation:

When Disable Primary When Down is enabled, a primary virtual server that becomes down remains effectively removed from service even after its backend health later recovers. Traffic continues to use the backup virtual server until an administrator explicitly enables the primary again. This behavior can be useful when administrators want to investigate the cause of an outage before returning production traffic to the recovered environment. Without this setting, traffic could automatically move back as soon as the primary becomes healthy. The option therefore provides more controlled recovery behavior for important applications with backup virtual servers.

Question 389. Which security check is enabled in the Web App Firewall Core profile

1. Cross Site Scripting
2. Cookie Consistency
3. CSRF Form Tagging
4. Safe Object

Correct Answer: 1. Cross Site Scripting

Explanation:

The Core Web App Firewall profile contains a limited set of fundamental security checks enabled by default. These include grammar based SQL injection, grammar based command injection, Cross Site Scripting, Buffer Overflow, and Block Keywords. The Core profile provides a focused starting point for application security without automatically enabling the broader set of checks associated with Basic or Advanced defaults. Administrators can still customize the profile after creation. Checks such as Cookie Consistency and form related protections belong to more advanced application security use cases and may require additional configuration or learning to avoid false positives.

Question 390. What is the primary purpose of the Web App Firewall CVE profile

1. Enable every advanced check
2. Disable signatures
3. Enable only XML security
4. Use CVE signature protection with other checks disabled

Correct Answer: 4. Use CVE signature protection with other checks disabled

Explanation:

The CVE profile is designed for deployments that primarily want protection based on Common Vulnerabilities and Exposures signatures. In this profile, other Web App Firewall checks are disabled except for the CVE check, allowing administrators to add and bind the required signature object. This provides a focused protection model when known vulnerability signature coverage is the main requirement. It differs from Core, Basic, and Advanced defaults, which enable broader sets of application security checks. Administrators can select the profile type that best matches the application security strategy and then customize its configuration where necessary.

Question 391. What security model is emphasized by advanced Web App Firewall protections

1. Open access model
2. Positive security model
3. DNS trust model
4. Routing security model

Correct Answer: 2. Positive security model

Explanation:

Advanced Web App Firewall protection emphasizes a positive security model. Instead of relying only on known attack signatures, it can define expected application behavior and permit specific legitimate data while rejecting unexpected traffic. Advanced protections can monitor user sessions, validate cookies, control form fields, protect against form tampering, and reduce Cross Site Request Forgery risks. This approach can help mitigate unknown attacks that do not match existing signatures. The stronger controls also require more application knowledge and processing resources, so administrators should enable protections according to the actual needs of the application rather than activating every check automatically.

Question 392. Which rules are preconfigured in a Basic Web App Firewall profile

1. Only SSL rules
2. Only DNS rules
3. Start URL and Deny URL relaxation rules
4. Only authentication rules

Correct Answer: 3. Start URL and Deny URL relaxation rules

Explanation:

A Basic Web App Firewall profile contains a preconfigured set of Start URL and Deny URL relaxation rules. Start URL protection helps prevent forceful browsing by defining acceptable application entry points and navigation behavior. Deny URL protection helps block access to known vulnerable or prohibited application locations. Basic profiles provide a quick security starting point for common web attacks while requiring less tuning than advanced protection. Administrators can later modify a Basic profile and enable additional security checks if application requirements become stricter. Basic and Advanced profiles are therefore starting templates rather than permanent fixed configurations.

Question 393. What is the default state of SSL client authentication

1. Mandatory
2. Optional
3. Enabled globally
4. Disabled

Correct Answer: 4. Disabled

Explanation:

SSL client authentication is disabled by default on NetScaler. Normal SSL connections therefore proceed without requiring the client to present a certificate unless an administrator explicitly enables certificate based client authentication on the SSL virtual server. Once enabled, the certificate requirement can be configured as optional or mandatory. Client authentication is configured per SSL virtual server rather than globally for every SSL application. This allows different applications to have different identity requirements. Administrators should also bind and trust the appropriate certificate authority information when validating client certificates so that presented certificates can be authenticated correctly.

Question 394. What happens with Optional SSL client certificate authentication when the client certificate is invalid

1. The appliance always reboots
2. The SSL transaction can continue
3. The virtual server is deleted
4. The client is added to a service group

Correct Answer: 2. The SSL transaction can continue

Explanation:

When client certificate authentication is configured as Optional, NetScaler requests a certificate but allows the SSL transaction to continue even when the client does not provide a valid certificate. Citrix recommends defining suitable access control policies before using optional certificate authentication because the SSL handshake itself does not guarantee successful certificate validation in this mode. Optional authentication can be useful when certificate information is desirable for some clients but should not be an absolute requirement for every connection. Mandatory authentication behaves differently because a valid client certificate is required for the SSL handshake to succeed.

Question 395. What happens with Mandatory SSL client authentication when no valid client certificate is supplied

1. The SSL handshake is terminated
2. The connection becomes HTTP
3. The request bypasses authentication
4. The certificate is generated automatically

Correct Answer: 1. The SSL handshake is terminated

Explanation:

Mandatory client certificate authentication requires the SSL client to provide a valid certificate. If the client does not provide one or the certificate cannot be validated, NetScaler terminates the SSL handshake. This provides stronger identity assurance than Optional client authentication because access cannot continue without successful certificate validation. The setting is configured for an individual SSL virtual server. Administrators must make sure the required certificate authority chain is available on NetScaler so legitimate client certificates can be trusted. Mandatory certificate authentication is commonly used for applications that require strong machine or user identity before establishing a secure application session.

Question 396. What does the HSTS Max Age value specify

1. Number of backend servers
2. Number of SSL certificates
3. Seconds a browser must require HTTPS
4. Number of DNS queries

Correct Answer: 3. Seconds a browser must require HTTPS

Explanation:

The HSTS Max Age setting specifies the number of seconds for which a compatible browser must continue using HTTPS for the protected site. After the browser receives the Strict Transport Security header, it remembers the policy for this duration and refuses to use an unencrypted HTTP connection for that domain. HSTS helps protect against SSL stripping, protocol downgrade, and related attacks. Administrators can also configure whether the HSTS policy applies to subdomains. NetScaler supports HSTS through front end SSL profiles and SSL virtual server configuration according to the selected SSL profile model.

Question 397. How is Priority Load Balancing configured in the documented interface

1. Only through shell
2. Through the GUI
3. Only through REST API
4. Through DNS records

Correct Answer: 2. Through the GUI

Explanation:

The dedicated Priority Load Balancing feature is documented as being configured through the graphical interface rather than the normal command line interface. Administrators create the priority load balancing virtual server, specify the maximum number of priority groups, and assign service or service group priorities. The lowest numerical priority represents the preferred group. Traffic remains with the preferred available group and moves to the next priority only when the higher priority group is unavailable. This design can model preferred and backup server farms without manually building extensive chains of independent backup virtual servers.

Question 398. What is the default maximum number of Priority Load Balancing groups

1. 1
2. 4
3. 5
4. 2

Correct Answer: 4. 2

Explanation:

The default maximum number of priority groups for a Priority Load Balancing virtual server is two. Administrators select the maximum number when the priority virtual server is created. This value determines how many priority service sets can be associated with the configuration. The setting cannot be edited later, so capacity and failover design should be considered before the virtual server is finalized. Priority group one is preferred over group two because the lowest priority number has the highest preference. Traffic moves toward later groups only when higher priority services become unavailable according to the configured behavior.

Question 399. What is the maximum number of Priority Load Balancing groups

1. 4
2. 8
3. 10
4. 32

Correct Answer: 3. 10

Explanation:

A Priority Load Balancing virtual server supports a maximum of ten priority groups. Administrators choose the maximum during virtual server creation, and the value cannot be modified afterward. NetScaler creates the required internal Content Switching and backup load balancing virtual server structures according to the configured number of priority groups. Each service or service group receives a priority order, with lower numbers having higher preference. This allows administrators to define several tiers of application capacity or preferred locations and automatically move traffic through those tiers as higher priority server groups become unavailable.

Question 400. Which service type can be bound to an SSL virtual server for SSL offload

1. HTTP
2. DNS
3. RADIUS
4. SIP

Correct Answer: 1. HTTP

Explanation:

An HTTP service can be bound to an SSL load balancing virtual server when NetScaler performs SSL offloading. The client establishes an encrypted SSL connection with the virtual server, and NetScaler terminates that encryption. It can then forward ordinary HTTP traffic to the backend service, removing SSL processing workload from the application server. This is a common SSL offload architecture. NetScaler also supports other compatible virtual server and service type combinations for specific use cases, such as binding a TCP service to an SSL TCP virtual server when generic encrypted TCP traffic must be decrypted.