Which command is used to undo a change after issuing a commit command?

A. router# rollback configuration to -1

B. router(config# commit undo

C. router(config)# commit rollback

D. router# rollback configuration last 1

What priority values do the WDSYSMON Ticker and Watcher threads utilize?

A. Ticker 11, Watcher 254

B. Ticker 10, Watcher 63

C. Ticker 11, Watcher 63

D. Ticker 10, Watcher 254

Which statements are true regarding L3VPN configurations?

A. Prior to configuring a vrf within MP-BGP, the router has to have instantiated the VPNv4 or VPNv6 address-family.

B. On a single PE router, the Route Distinguisher and the Route Targets must be the same.

C. Prior to configuring a neighbor in the VPNv4 address-family, it must already be configured for IPv4Unicast.

D. The import and export Route Targets must be the same on a PE.

What is currently required for eBGP sessions in IOS-XR that was not required in IOS?

A. Default MED values

B. Local-Preference values

C. Send Communities

D. Route-Filter In and Out

Which command is used to redistribute BGP into EIGRP for a Layer 3 VPN customer?

A. router(config-eigrp-af)# redistribute bgp 65001

B. router(config-eigrp-vrf-af)# redistribute bgp 65001

C. rouur(config-eigrp-vrf)# redistribute bgp 65001

D. router(config-eigrp)# redistribute bgp 65001

Which protocol is a PE to CE routing protocol?

A. ODR

B. LDP

C. RIPv1

D. eBGP

Which VRFs must be configured on the ASBRs between the two AS'es in an Option B Layer-3 VPN solution?

A. The VRFs shared between the two AS'es plus one VRF representing each AS.

B. The VRFs shared between the two AS'es.

C. The VRFs shared between the two AS'es plus one shared VRF.

D. The VRFs do not need to be configured on the ASBRs.

Which command is used to configure an interface that does not currently exist in the system?

A. interface preconfigure

B. preconfigure interface

C. interface vrf preconfig

D. controller preconfigure

How do you verify the label(s) used between the ASBRs in Option A Inter-AS L3VPN operation?

A. There are no labels used between the ASBRs

B. Verify the labels assigned by MP-BGP in the SHOW BGP VPNV4 UNICAST

C. Verify the labels assigned by MP-BGP in the SHOW CEF VRF output

D. Verify the labels assigned by LDP in the output of SHOW MPLS FORWARDING

Which command removes a user from configuration mode but keeps the user connected to the router?

A. clear line

B. clear session

C. clear commit

D. clear config session