Intermediate system to intermediate system (IS - IS), is a protocol used by network devices (routers) to determine the best way to forward datagrams through a packet - switched network, a process called routing. Which three attributes are of the IS - IS routing protocol? （）
 

A. DHCPDISCOVER packets will reach the DHCP server.
B. The router will not forward DHCPDIS COVER packets because it has not been configured to do so.
C. This configuration is applied to interface Fa0/1.
D. DHCPDISCOVER packets will not reach the DHCP server because DHCPDISCOVER packets are broadcasts.
E. DHCPDISCOVER packets will not reach  the DHCP server because ports 67 and 68 have not been explicitly allowed by the ip forward - protocol command.
F. This configuration is applied to interface Fa0/0.

A. when all equipment is manufactured by Cisco
B. when there are multiple paths to destination networks
C. because having multiple routing protocols confuses hackers
D. when migrating from an older Interior Gateway Protocol (IGP) to a new IGP
E. when  using UNIX host - based routers
F. when smaller broadcast domains are desired

A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The mu lticast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.