CCA-AppDS-Gateway Citrix NetScaler 14.x Essentials and NetScaler Gateway Practice Questions
Prepare for CCA-AppDS-Gateway with more than an answer.
- Exam fee
- $200 USD
- Level
- Associate
- Valid for
- 3 years
Domains covered on the exam 13
- Getting Started with NetScaler ADC6%
- Basic Networking9%
- High Availability7%
- Load Balancing11%
- SSL Offloading9%
- Securing System Traffic (Authentication, Authorization, and Auditing)7%
- Monitoring and Troubleshooting7%
- NetScaler Gateway12%
- AppExpert Expressions and Gateway Policies7%
- Authentication, Authorization and Secure Web Gateway10%
- Managing Client Connections7%
- Integration with Citrix Virtual Apps and Desktops5%
- Configuring NetScaler Gateway Advanced Features3%
- 1
A hospital IT team is deploying a NetScaler HA pair across two separate data centers. The primary node is in Datacenter A (Subnet 10.1.0.0/16) and the secondary node is in Datacenter B (Subnet 10.2.0.0/16). Because they reside in different subnets, they cannot share the exact same SNIPs or default gateways.
Which HA setting MUST be enabled to allow these nodes to form a successful HA pair while maintaining distinct network configurations?
graph LR subgraph DCA [Datacenter A] Primary[NetScaler Primary 10.1.x.x] end subgraph DCB [Datacenter B] Secondary[NetScaler Secondary 10.2.x.x] end Primary |HA Heartbeat| SecondaryShow answer details
Correct answer: B
Independent Network Configuration (INC), set with
add ha node -inc ENABLED, lets the two HA nodes sit in different subnets. In INC mode the NSIP, SNIPs, VLANs and routes are node-specific and are not synchronized. VIPs stay floating (shared), and the rest of the configuration still synchronizes. Fail-safe mode only keeps one node primary when both nodes fail their health checks. - 2
True or False: In a NetScaler High Availability setup, if a monitored interface on the primary node goes DOWN, the NetScaler will immediately trigger a failover to the secondary node, regardless of the secondary node's interface status.
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Correct answer: B
False. When a HAMON-enabled critical interface fails, the primary node goes to NOT_UP. The secondary takes over only if it is healthy (UP). If the secondary is also NOT_UP, the default HA behavior leaves both nodes in the secondary state. With fail-safe mode enabled, the node that was last primary stays primary. Either way, traffic is not simply failed over to an unhealthy secondary.
- 3
Which of the following conditions MUST be met before initiating an In-Service Software Upgrade (ISSU) on a NetScaler HA pair to ensure zero downtime? (Select TWO)
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Correct answer: A, B
NetScaler 14.1 lists two ISSU prerequisites. First, the SYNC VLAN must be configured on both HA nodes: after migration, traffic for existing connections is steered to the old primary through a GRE tunnel over that VLAN. Second, the interface on which the peer node's NSIP MAC address is resolved must have at least the capacity of the client/server data interfaces. ISSU is not supported with admin partitions, and neither GSLB nor MAC-based forwarding plays any part in ISSU.
NetScaler 14.1 lists two ISSU prerequisites. First, the SYNC VLAN must be configured on both HA nodes: after migration, traffic for existing connections is steered to the old primary through a GRE tunnel over that VLAN. Second, the interface on which the peer node's NSIP MAC address is resolved must have at least the capacity of the client/server data interfaces. ISSU is not supported with admin partitions, and neither GSLB nor MAC-based forwarding plays any part in ISSU.
- 4
A telecommunications company wants to deploy NetScaler 14.x as a software-based Application Delivery Controller on their existing bare-metal Linux servers. They need to maximize packet processing performance by bypassing the hypervisor overhead entirely while utilizing DPDK (Data Plane Development Kit). Which NetScaler form factor is exclusively designed to meet these specific requirements?
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Correct answer: B
NetScaler BLX is a bare-metal software form factor that runs natively on Linux without the need for a hypervisor. It supports DPDK for high-performance packet processing, making it the optimal choice for this scenario. CPX is container-based, SDX is a hardware appliance with hypervisor, and VPX is a virtual appliance requiring a hypervisor.
- 5
An infrastructure architect is designing a new NetScaler 14.x deployment. The requirement is that the NetScaler must reside on a single subnet, and all traffic from the clients to the backend servers must route through the NetScaler interface, but the backend servers reside on a different subnet entirely. The NetScaler must perform source IP translation to ensure return traffic flows back through it.
Which deployment mode is the architect implementing?
flowchart LR Client((Client)) -->|Subnet A| Switch[Core Switch] Switch -->|Subnet B| NS[NetScaler 14.x] NS -->|Subnet B| Switch Switch -->|Subnet C| Server[(Backend Servers)]Show answer details
Correct answer: C
In a One-Arm mode deployment, the NetScaler connects to the network through a single interface/VLAN. To ensure traffic returns through the NetScaler, SNAT (using a SNIP) is employed so the backend servers send the response back to the NetScaler rather than directly to the client via the default gateway.
- 6
True or False: When upgrading a NetScaler VPX instance to a new bandwidth license (e.g., from 200 Mbps to 1000 Mbps), you must redeploy the virtual appliance using a new OVF template to accommodate the higher throughput capabilities.
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Correct answer: B
False. NetScaler VPX licenses are software-based. To upgrade the bandwidth throughput (e.g., from VPX 200 to VPX 1000), an administrator simply needs to allocate the new license file to the existing instance and reboot. Redeploying the OVF template is not required.
