Citrix NetScaler 12 Essentials and Unified Gateway (1Y0-230) - Citrix

Scenario: A Citrix Administrator found that whenever a NetScaler VPX high availability (HA) pair of appliances fails over, the load-balanced websites are NOT accessible. The administrator investigated the issue and found that the router and switches do NOT support gratuitous ARP (GARP). However, the administrator cannot immediately afford to upgrade the network infrastructure.<br />
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What can the administrator do immediately to resolve the issue and prevent a future outage?

Which two deployment methods does remote desktop protocol (RDP) proxy support? (Choose two.)

Scenario: A company recently acquired three smaller companies; this adds more than 1500 employees to the company. The current NetScaller appliance does NOT support adding that many users. A Citrix Administrator needs to use a Multi-Tenancy solution, giving each newly acquired company its own NetScaler for VPN access, load balancing, and at least 20 GBPS of throughput.<br />
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How can the administrator meet the needs of this environment?

Which two features can a Citrix Administrator use to allow secure access to a sensitive company web server that is load-balanced by the NetScaler? (Choose two.)

Scenario: A NetScaler is configured with the following modes:<br />
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-MAC-based Forwarding<br />
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-USIP<br />
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-USNIP<br />
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-Layer 3 mode<br />
A Citrix Administrator configured a new router and now requires some of the incoming and outgoing traffic to take different paths through the new router. However, the administrator notices that this is failing and takes a network trace. After a short monitoring period, the administrator notices that the packets are still NOT getting to the new router from the NetScaler.<br />
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Which mode should the administrator disable on the NetScaler to facilitate the addition of the new router and successfully route the packets?