Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN？ （）

A. LDP routes

B. IPv6 routes

C. RSVP routes

D. Layer 2 VPN routes

E. Layer 3 VPN routes

A.HDLC

B.Ethernet

C.Token Ring

D.PPP

E.FDDI

F.Frame Relay

A. Flex Links

B. loop-free U

C. looped square

D. looped triangle

E. loop-free inverted U

A.HDLC

B.Ethernet

C.Token Ring

D.PPP

E.FDDI

F.Frame Relay

A. Internet server hosting

B. Call Manager Enterprise Edition

C. VPN and encryption

D. Cisco Unity voice mail

E. Layer 2 switching

F. Auto Attendant

A. Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.

B. Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.

C. Distribution switches are single points of failure causing outages for the end devices.

D. Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.

E. NSF and SSO with redundant supervisors have the most impact on outages at the access layer.

A.Microsegmentation decreases the number of collisions on the network.

B.if a switch receives a frame for an unkown destination,it uses ARP to resolve the address.

C.Spanning Tree Protocol allows switches to automatically share vlan information.

D.In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port.

E.Establishing vlans increases the number of broadcast domains.

F.Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.

A.With a network wide mask of 255.255.255.128, each interface does not require an IP address.

B.With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.

C.With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.

D.With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.

E.With a network wide mask of 255.255.254.0, each interface does not require an IP address.

A.Layer two

B.Layer four

C.Layer one

D.Layer three

A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

B. IGMP is used to register individual hosts with a multicast group

C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

F. IGMP snooping ru ns on Layer 3 routers