1Y0-A21 Online Practice Questions and Answers

Scenario: An administrator needs to configure a NetScaler device so that a set of back-end servers in a LAN can initiate connections to the Internet. ACLs are configured in this environment. What must the administrator configure to meet the needs of this scenario?

A. INAT on the servers in the LAN

B. RNAT for the destination IP addresses

C. NAT on the router to the NetScaler device

D. RNAT for the subnet that includes the LAN IP addresses

E. RNAT on the virtual servers bound to the servers in the LAN

Scenario: An ISP provides SaaS to enterprise customers as part of a cloud offering. A NetScaler is configured to support multi-tenant deployments. Traffic isolation for each enterprise (tenant) is achieved using VLAN segmentation for each enterprise customer. As an example, incoming client requests from enterprise customers are assigned to separate VLANs. Which feature can an administrator configure to specify that the VIP for customer1 will only listen to requests coming from VLAN1 and the VIP from customer2 will only listen for requests from VLAN2?

A. Static Routes

B. Policy-based routing

C. MAC-based Forwarding

D. Network-aware policies

Scenario: An administrator is planning a software upgrade of a NetScaler HA pair from NetScaler version

8.1 Standard Edition to version 9.2 Enterprise Edition in order to take advantage of the new features. In the current environment, the NSIP for the pair is an IPv4 address.

Which two steps must the administrator take to complete the NetScaler migration in this scenario? (Choose two.)

A. Obtain a new NetScaler license.

B. Enable the IPv6 protocol translation.

C. Add the NSIP address after the HA pair has been upgraded.

D. Ensure propagation and synchronization are disabled during migration.

An administrator needs to configure a NetScaler-owned IP address for server-side connections in an environment in which USNIP mode is globally enabled on the NetScaler system.

Which step must the administrator take to meet the needs of this scenario?

A. Add an IP of type SNIP.

B. Ensure USIP mode is enabled globally.

C. Configure VIPs instead of SNIPs for the server-side connections.

D. Enable USNIP mode on the virtual server entities bound to the back-end servers.

Which two options can an administrator leverage when setting the nsroot password during the initial setup of a NetScaler system? (Choose two.)

A. The Setup Wizard

B. The passwd command

C. The set system user command

D. The add nsroot password command

Scenario: An administrator has created multiple name-based servers using the Configuration Utility. The administrator has also created multiple services based on these servers and notices that all the new services are DOWN.

What must the administrator do to resolve this?

A. Bind a monitor to each of the services.

B. Change the service status to UP using the CLI.

C. Configure a DNS nameserver on the NetScaler.

D. Bind the services to a load balancing virtual server.

According to best practices, what are the three recommended methods for load balancing cache servers on a NetScaler device? (Choose three.)

A. URL hash

B. Round robin

C. Domain hash

D. Least connections

E. Destination IP hash

Scenario: An administrator has set up a NetScaler in HA mode and now wants to bind the SSL certificate to one of the SSL virtual servers. However, the administrator notices that the command failed on the secondary node while succeeding on the primary node. Both nodes in HA are healthy, with successful configuration synchronization and command propagation.

Which reason explains the command failure on the secondary node?

A. Command syntax is not correct.

B. Command not executed with root ID.

C. SSL command not available on secondary node.

D. SSL certificate is not present on secondary node.

Which command can an administrator use to display the node state in an HA pair?

A. show ha pair

B. show ha state

C. show ha node

D. show ha primary

Scenario: An administrator has set up four Web servers for load balancing. The administrator wants to monitor the response codes from the site to determine whether the site is up. The administrator has bound a custom HTTP monitor to the HTTP services. When the monitor is bound, the services go down so the administrator unbinds the monitor to bring the state of the services to UP. The administrator runs a HTTP header trace and finds that the site is responding with a redirect.

Which two options can the administrator use to get the service state to UP? (Choose two.)

A. Create a new HTTP monitor with a 200 response code and bind it to the service.

B. Create a new HTTP monitor with a longer response timeout and bind it to the service.

C. Modify the custom HTTP monitor with the same redirect response code the site is sending and bind it to the service.

D. Modify the custom HTTP monitor with the HTTP request going to a page that responds with a 200 response code and bind it to the service.