Q57
Single choice
Refer to the exhibit.
SH3 and SH4 are able to optimize FTP and HTTP sessions between Client41 and the respective application hosts Server31 and Server32. However, optimization seems to be a problem for Client42 and these application hosts. A quick check on SH3 and SH4 registers neither optimized nor pass-through traffic from Client42. Client42 is able to ping to both Server31 and Server32. Note that SH3 and SH4 are in auto-discovery mode.
What is the likely cause?