Which of the following devices sets the framing type on a T1 circuit？（）

A.Block both IRC and ICMP
B.Utilize SNMP to identify IM users
C.Contact the IM carrier to request the IM account be disabled
D.Change the shaping setting to allow minimal traffic to reduce port hopping

A.telephony distribution.
B.businesses with more than 75 computers.
C.security cameras.
D.computer labs with more than 20 computers.

A.10Mbps
B.100Mbps
C.1000Mbps
D.10000Mbps