4. Suppose you open a non-pront organization called "flashNet" and want to set up your organization's network. Your network has the following servers: Two Authoritative DNS server: "thounder.flashNet.org" with IP as "128.119.1.44" and "lightning.flashNet.org" with IP as "128.119.1.60" . Web server: "flashNet.org" with IP as "128.119.1.10" Email server: "mail.flashNet.org" with IP as "128.119.1.10" (i.e, the same server machine serves as both web server and email server) Your organization's email address is "username@flashNet.org a). What resource records (RRs) do you need to provide to the upper-level "org" Registrar? b). What RRs do you need to put in your company's authoritative DNS servers