What is the subnetwork number of a host with an IP address of 172.16.210.0/22?（）

多项选择题Which statements describe the routing protocol OSPF?（）

A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates.
F. It is simpler to configure than RIP v2.

单项选择题On point-to-point networks, OSPF hello packets are addressed to which address?（）

A.127.0.0.1
B.172.16.0.1
C.192.168.0.5
D.223.0.0.1
E.224.0.0.5
F.254.255.255.255

多项选择题Which of the following IP addresses can be assigned to host devices?（）

A.205.7.8.32/27
B.191.168.10.2/23
C.127.0.0.1
D.224.0.0.10
E.203.123.45.47/28
F.10.10.0.0/13

多项选择题Which of the following are VLAN frame encapsulation types that may be configured on a Catalyst switch?（）

A. VTP
B. ISL
C. CDP
D. 802.1Q
E. 802.1p
F. LLC

单项选择题Which statement describes a spanning-tree network that has converged?（）

A. All switch and bridge ports are in the forwarding state.
B. All switch and bridge ports are assigned as either root or designated ports.
C. All switch and bridge ports are in either the forwarding or blocking state.
D. All switch and bridge ports are either blocking or looping.