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TMOS Administration Questions 71–75 (page: 16)

Updated On: 9-Feb-2026

A site wishes to perform source address translation on packets from some clients but not others. The determination is not based on the client's IP address, but on the virtual servers their packets arrive on. What could best accomplish this goal?

  1. A SNAT for all addresses could be defined, and then disable the SNAT processing for select VLANs.
  2. Some virtual servers could be associated with SNAT pools and others not associated with
    SNAT pools.
  3. The decision to perform source address translation is always based on VLAN. Thus, the goal cannot be achieved.
  4. The decision to perform source address translation is always based on a client's address (or network). Thus, this goal cannot be achieved.

Answer(s): B



Assume a client's traffic is being processed only by a NAT; no SNAT or virtual server processing takes place. Also assume that the NAT definition specifies a NAT address and an origin address while all other settings are left at their defaults. If a client were to initiate traffic to the NAT address, what changes, if any, would take place when the BIG‐IP processes such packets.

  1. The source address would not change, but the destination address would be translated to the origin address.
  2. The destination address would not change, but the source address would be translated to the origin address.
  3. The source address would not change, but the destination address would be translated to the NAT's address.
  4. The destination address would not change, but the source address would be translated to the NAT's address.

Answer(s): A



A standard virtual server is defined with a pool and a SNAT using automap. All other settings for the virtual server are at defaults. When client traffic is processed by the BIG‐IP, what will occur to the IP addresses?

  1. Traffic initiated by the pool members will have the source address translated to a self‐IP address but the destination address will not be changed.
  2. Traffic initiated to the virtual server will have the destination address translated to a pool member address and the source addressTraffic initiated to the virtual server will have the destination address translated to a pool member. address and the source address translated to a self‐IP address.
  3. Traffic initiated by selected clients, based on their IP address, will have the source address translated to a self‐IP address but the destination will only be translated if the traffic is destined to the virtual server.
  4. Traffic initiated to the virtual server will have the destination address translated to a pool member address and the source addressTraffic initiated to the virtual server will have the destination address translated to a pool member. address and the source address translated to a self‐IP address. Traffic arriving destined to other destinations will have the source translated to a self‐IP address only.

Answer(s): B



Which VLANs must be enabled for a SNAT to perform as desired (translating only desired packets)?

  1. The SNAT must be enabled for all VLANs.
  2. The SNAT must be enabled for the VLANs where desired packets leave the BIG‐IP.
  3. The SNAT must be enabled for the VLANs where desired packets arrive on the BIG‐IP.
  4. The SNAT must be enabled for the VLANs where desired packets arrive and leave the BIG‐IP.

Answer(s): C



A BIG‐IP has a virtual server at 150.150.10.10:80 with SNAT automap configured. This BIG‐IP also has a SNAT at 150.150.10.11 set for a source address range of 200.200.1.0 / 255.255.255.0. All other settings are at their default states. If a client with the IP address 200.200.1.1 sends a request to the virtual server, what is the source IP address when the associated packet is sent to the pool member?

  1. 200.200.1.1
  2. 150.150.10.11
  3. Floating self IP address on VLAN where the packet leaves the system
  4. Floating self IP address on VLAN where the packet arrives on the system

Answer(s): C



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