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Basic Administration for Citrix NetScaler 9.2: 1Y0-A21 Exam
1Y0-A21 Questions & Answers
Exam Code: 1Y0-A21
Exam Name: Basic Administration for Citrix NetScaler 9.2
Q & A: 159 Q&As

1.In order to prevent configuration errors fromtypographical errors and to streamline the
creation of expressions, an administrator should leverage _______when creating policies.
(Choose the correct option to complete the sentence)
A. Pattern sets
B. Entity template
C. Inline expressions
D. named expression
Answer: A

2.An administrator has executed the following commands:
However, the administrator notices that the virtual server state is DOWN.
Which action must the administrator take to set the virtual server state to UP.?
A. Set lbvserver vs1 state UP
B. Bind a monitor to the services
C. Set vserver vs1 accessDown yes.
D. Bind the two services to the lb vserver vs1.
Answer: D

3.The expression <url ==txtres http header content-encoding == text/html> can be used
for _________and ___________. (Choose the correct twooptionsto complete the
A. caching
B. compression
C. load balancing
D. surge protection
Answer: A,B

4.An administrator is configuring a virtual server for encrypted traffic from clients that
needs to be decrypted prior to being forwarded to the back-end servers.
Which type of virtual server and service should the administrator configure?
A. SSL server and service
B. SSL_TCP virtual server and service
C. SSL_TCP virtual server and TCP service
D. STCP virtual server and SL_TCP service
Answer: C

5.What can an administrator configure to perform a health check for a SVC1,which is
transferring HTTPS traffic so that a probe is only sent when there is no traffic to the
A. an HTTP monitor with the secure parameter selected
B. anHTTP monitor with the transparentparameter selected
C. an HTTP-Inlinewith the secure parameter selected
D. an HTTP-ECV with the transparentparameter selected
Answer: C

6.Which trap can an administrator set on a NetScaler system so that an alert is sent
whenever an SNMP management application that does NOT have access privileges
attempts to access a NetScaler?
A. loginFailure
B. accessFailure
C. accessDenied
D. authenticationFailure
Answer: D

7.Scenario: A network administrator working with two NetScaler systems has encountered
an issuewithHA. The administrator notices that HA synchronization is failing. The
administrator has already run the <show node> command on both nodes but needs more
Which two additional steps should the administrator take to collect the appropriate data in
order to troubleshoot this issue? (Choose two.)
A. Collect the files in /var/core.
B. Collect the files in /var/log/auth.log.
C. Run show techsupport from both NetScalers.
D. Run /netscaler/ -sz 0 to gather an nstrace.
Answer: A,D

8.Scenario: An administrator finished installing a NetScaler appliance and configured a
load balancing virtual server that has four services bound. The configured toad balancing
method for the virtualseveris set to use least connection. The administrator later added a
fifth server to the virtual server However, when testing load balancing, the administrator
finds that the virtual server is using round robin instead of least connection
Why would the NetScaler system be using round robin as the load balancing method
instead of least connection?
A. The administrator did not save the configuration correctly.
B. The NetScaler is using slow start mode for the virtual server,
C. Least connection will only function when more than five servers are load balanced.
D. Least connection is not a load balancing method that can be used for Web servers.
Answer: B

9.When leveraging the Dashboard, which information would indicate to an administrator
that server performance has been improved after caching m a network environment?
A. Client connection count increases
B. Server-side request rate increases
C. Client connection count decreases
D. Sever-side request rate decreases
Answer: D

10.Scenario: An administrator has set up four Webserversfor toad balancing. The
administrator wants to monitor the response codes from the site todeterminewhether the site is up. The administrator has bound a custom HTTP mentor to the WTTP services.
When the monitor is bound, the services go down so the administratorunbinds 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 ft to the
service.C.Modify the custom HTTP monitor with the same redirect response code the site
is sending and bind ft to the service.
C. 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.
Answer: A,C

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