Citrix 1Y0-241 & 1Y0-240 Practice Test

In DNS, an A record maps a hostname to an IPv4 address, which is exactly what a GSLB virtual server needs to provide to clients. The gslb.vserver entry is used so that DNS responses return an IPv4 address that clients can connect to, guiding traffic to the appropriate site. CNAME would alias the name to another hostname, MX is for mail servers, and TXT stores text data, but none of those directly provide the IPv4 address needed for client connections to the GSLB service.