1Y0-A11 - Basic Administration for Citrix NetScaler 9.0
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Scenario: The network administrator at a company has HTTP-Inline and TCP-ECV monitors bound to services that send traffic to all production servers. A critical application component on these servers must be ugraded soon. A group of administrators will be working to upgrade this component as quickly as possible. The upgrade group has guaranteed that 60% of the production servers will be up at any time but has not guaranteed that any one server will be up at a given time. During the upgrade period, the network administrator wants the services bound to a server to be marked as DOWN in the NetScaler system the first time the response timeout is reached. The network administrator also wants the probe time to reflect the average time it takes to restart one of the production servers. Which two parameters must the administrator customize on these monitors to meet the requirements of the scenario? (Choose two.)
Scenario: An administrator must set up a NetScaler system network with USIP mode enabled. The NetScaler must be able to preserve client IP addresses in TCP/IP packets reaching the back-end servers except for connections coming from particular IP addresses that are defined in an ACL. In the case of connections coming from the IP addresses defined in the ACL, the packets reaching the back-end servers should receive the NetScaler IP address instead of the client IP address. On which entity should RNAT be configured to meet the requirements in this scenario according to best practices?
How can an administrator configure a health check for a server receiving HTTP traffic so that it monitors the responses of the server to actual client requests as opposed to probes whenever possible?
Configure an HTTP-Inline monitor
An administrator is configuring custom monitors to determine the state of services based on the network traffic of the service. Which two types of services can an administrator monitor with an inline monitor in NetScaler 9.0? (Choose two.)
An administrator needs to add a NetScaler system to an inline configuration in a high availability (HA) setup so that the new node maintains the configurations already existing on the old node when adding the new NetScaler system to the configuration. Which setting should the administrator select on the new node to achieve this?
The expression "url == *.txt || res.http.header content-encoding == text/html" can be used for __________ and __________ actions. (Choose the two action types that correctly complete the sentence.)
Which feature must an administrator configure so that all transactions on a NetScaler which can be logged are logged by a syslog server?
An administrator wants to configure load balancing so that all requests coming from a particular network are sent to the same server. Which load balancing method meets the needs of this environment?
Source IP Hash
How many untagged VLANs can an administrator configure on a single interface?
An administrator needs to set up a NetScaler system so that an alert is sent to an SNMP manager when a specific interface changes state. Which two SNMP traps must the administrator ensure are enabled to receive the appropriate alerts? (Choose two.)
A NetScaler system is running with high CPU usage frequently. Which log can the administrator view to determine if the high CPU is being caused by the processes running in the user space?
Scenario: An administrator is creating virtual servers to receive encrypted and non-encrypted HTTP traffic as well as non-encrypted TCP traffic. The administrator plans to forward all traffic from the NetScaler system to the back-end servers as clear text. How should the administrator configure the services and virtual servers?
Create HTTP type service Create TCP type service Create HTTP type vserver Create TCP type vserver Create SSL type vserver Bind the HTTP type service and vserver together Bind the TCP type service and vserver together Bind the HTTP type service and SSL type vserver together
An administrator is setting up high availability (HA) using the command line interface. Which additional step should the administrator take to configure HA when using the command line interface?
Manually disable the HA monitor for each interface that is not connected or not being used for traffic
Scenario: A security administrator wants to monitor the rate at which unacknowledged SYN packets are received by the NetScaler system for individual VIP addresses. The administrator plans to configure SNMP on the NetScaler to be informed about synflood rates. Which two traps are set when the set SNMP alarm command is used? (Choose two.)
In order to associate an action for a new compression policy, an administrator should __________ prior to binding the policy at the appropriate level. (Choose the correct phrase to complete the sentence.)
add a compression policy with the policy expression and action specified
An administrator plans to configure a content filtering policy to drop trace and connect methods. Which expression should an administrator use in the content filtering policy to explicitly drop trace and connect methods?
REQ.HTTP.METHOD == TRACE || REQ.HTTP.METHOD == CONNECT
Scenario: An administrator configured a NetScaler system for high availability (HA) and configured the Failover Interface Set (FIS) feature on the appliances including interface 1/3 and on interface 1/2 which is UP. The administrator also set an HA monitor on interface 1/3. When the administrator unplugged the interface 1/3 to test the failover process, it did NOT failover the primary appliance to the secondary appliance. Which configuration option prevented the failover from occuring?
FIS on interface 1/3
An administrator should configure Link Aggregation on a 7000 NetScaler system when __________. (Choose the correct option to complete the sentence.)
the bandwidth requirements inbound to or outbound from the Netscaler are greater than 1 Gb/sec
Which SNMP trap must an administrator configure to be informed when the response time for a monitor probe that had exceeded the set threshold returns to normal?
Scenario: An administrator installed a NetScaler system and configured the NSIP and MIP for the system. The NetScaler system will be used primarily for load balancing in this environment. Which additional step must the administrator take to ensure that the NetScaler system can perform the necessary server load balancing in this environment?
Create VIPs for the front-end connections to the back-end servers
Scenario: An administrator is troubleshooting monitoring for web servers in an environment. Currently, services are often being marked down due to slow back-end servers. The administrator wants to configure the vserver and services so that existing connections stay open when a service is marked down but not when a vserver is marked down. How must the administrator configure the service and virtual server to reflect this dependency?
set lb vserver lbv1 -downStateFlush ENABLED set service svc 1 -downStateFlush DISABLED
Scenario: An administrator needs to configure load balancing for a web farm so that traffic will not be dropped when the virtual server is marked down. RHI and GSLB are not configured in this environment. The administrator can configure ___________ or ____________ so that it will receive traffic when the virtual server is marked down. (Choose the two options that correctly complete the sentence.)
a redirect URL string
the name of a backup virtual server
Scenario: An administrator needs to upgrade a NetScaler system from 8.x to 9.0 in accordance with best practices. The NetScaler system is currently configured with high availability. How should the administrator upgrade the NetScaler system to meet these requirements?
Upgrade the secondary node and then the primary node
Which custom monitor parameter must an administrator configure to receive an SNMP trap if a monitor probe fails to respond within the specified parameter?
Response timeout threshold
Scenario: A network administrator is deploying a NetScaler system in an environment with a single subnet using this IP information: subnet: 192.168.10.32 netmask: 255.255.255.224 default gateway: 192.168.10.40 The administrator already set up the NSIP and MIP addresses using the command line interface. Which command could the administrator use to complete this set up successfully?
add route 0.0.0.0 0.0.0.0 192.168.10.40
An administrator is deploying a NetScaler system using the command line interface and plans to configure the MIP as 10.48.192.17. Which command must the administrator use to correctly configure the MIP for this NetScaler system?
add ns ip 10.48.192.17 255.255.255.0 -type mip
During the initial setup of a NetScaler system, an administrator can use the __________ command to correctly set the nsroot password. (Choose the correct option to complete the sentence).
set system user
Scenario: An administrator introduced two new servers, newSVR1 and newSVR2, into a server farm. These new servers can handle more traffic than the older servers. The current load balancing method set for the virtual server managing the traffic for this group of servers is Least Connections. The administrator wants to maintain the load balancing method but also wants to use the new servers to improve performance by routing more of the traffic to them than to the older servers. How must the administrator configure the advanced options using the command line interface to achieve this?
set lb vserver newSVR1 -weight 10 Service-HTTP-1 set lb vserver newSVR2 -weight 10 Service-HTTP-1
An administrator needs to configure a health check for a set of firewalls that are being load balanced by the NetScaler system in the network environment. How must the administrator configure the health check for this environment?
Select the transparent parameter
Scenario: The NetScaler system in an environment was set to compress text globally using the deflate format. An administrator has been instructed to modify the compression policy so that the NetScaler system will compress text globally using the gzip format instead of the deflate format. Which command line interface command must the administrator use to modify the existing compression policy correctly?
set cmp policy
An SNMP manager attempted to poll for an OID but received the error message: "response timeout." Which option could the administrator have misconfigured for SNMPv2 to cause this error message?
Which qualifier designates the source IP of the outgoing packet in a classic policy for NetScaler 9?
The primary node of a NetScaler high availability (HA) pair failed over immediately at start up during the initial testing of the system. Which configuration step can the administrator take to prevent this from happening again?
Execute the "disable interface" command for all unused interfaces
Which event would trigger a failover in a high availability pair?
The primary appliance reboots.
An administrator configured cache redirection and needs to provide a report of how that feature is functioning in the network environment. What can the administrator use to see a graphical representation of the statistics for the vserver performing the cache redirection?
The chart option in the Dashboard once the correct vserver is selected
Scenario: An administrator needs to configure services and vservers for connection-based content switching of transport control protocol traffic. The traffic must be decrypted by the NetScaler and sent as plain text to the back-end server. Which types of services and vservers should the administrator configure for this environment?
An SSL_TCP type of content switching vserver and TCP type services and vservers for the NetScaler
Scenario: An administrator is configuring two NetScaler appliances for high availability (HA) using the command line interface. The administrator plans to have the primary NetScaler have the NSIP address 172.16.200.52 and the secondary NetScaler to have the NSIP address 172.16.200.53. Which two command line interface commands could the administrator use to configure HA in this environment? (Choose two.)
add node 1 172.16.200.53 on primary
add node 2 172.16.200.52 on secondary
An administrator monitoring a NetScaler implementation configures a max client in the environment. Which information from the Dashboard will clearly indicate to the administrator that a service is definitely NOT able to handle the workload as configured?
Current requests in the surge queue
Scenario: A company is deploying a NetScaler system in a network environment in which there is one non-routable subnet and some subnets are open to the public Internet. The administrator plans to enable Use-Subnet-IP mode and disable Use-Source-IP mode. Which two IP addresses could be set as source IP addresses for connections to back-end servers? (Choose two.)
Which command can an administrator use to set up a NetScaler system to use SNIPs instead of MIPs for connections to local resources?
enable ns mode USNIP
An administrator has just enabled caching and wants to make sure that this will positively impact server performance. Which information can the administrator get from the Dashboard to determine whether server performance was positively affected by enabling caching?
Server side request rate decreases
Which type of content switching vserver must an administrator configure for connection-based content switching of transport control protocol traffic when the traffic should be decrypted prior to reaching the back-end server?
In which scenario would an administrator require two NetScaler systems configured as a high availability pair?
A business critical application needs to be load balanced.
Which advanced service option should an administrator configure so that a server is off-loaded faster from having to serve slow clients?
Scenario: An administrator needs to create a health check that will mark an HTTP service down if the bound monitor probe fails. The administrator wants to create a monitor and configure the health check so that a trap is sent if the monitor probe reply exceeds 20 milliseconds. How can the administrator create the monitor for this health check using the command line interface?
add lb mon monitor-HTTP-1 HTTP -resptimeout 20 milli
Scenario: The computers at a company were recently infected with the nimda virus. An administrator at the company plans to prevent this from happening again by using the content filtering feature of the NetScaler system to terminate a client connection when a possible instance of the nimda virus is detected. The administrator has already created a policy expression that will match traffic with ROOT.EXE or CMD.EXE and plans to use the NetScaler default "RESET" action to terminate the appropriate connections. In order to achieve the desired result, the administrator should __________ prior to binding the policy at the appropriate level. (Choose the correct phrase to complete the sentence.)
add the filter with the policy expression and the action specified
Which type of VLAN is used when an administrator leaves the NetScaler system interfaces on the default VLAN?
During the initial setup of a NetScaler system, an administrator can use the __________ to correctly set the nsroot password. (Choose the correct option to complete the sentence).
Scenario: An administrator set up a NetScaler system in high availability mode. The system keeps failing over unexpectedly. Which two commands can the administrator run to determine the cause of this issue? (Choose two.)
[email protected]# nsconmsg -d event
An administrator is installing a NetScaler system using the command line interface. Which command must the administrator use to assign a mapped IP address for the NetScaler system?
add ns ip <mappedIP> <mappedIPSubnet> -type mip