An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?（）A、EXP bitsB、VPI / VCIC、shim headerD、SNAP header
An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?（）
- A、EXP bits
- B、VPI / VCI
- C、shim header
- D、SNAP header
相关考题：
A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?() A.DSLAMB.DSL modemC.ERX Edge RouterD.customer workstation
Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?() A. ip sa-validateB. ip split-horizonC. ip access-routesD. ip filter-options
What is the default Quality of Service traffic class used by the ERX Edge Router?() A. bronze forwardingB. assured forwardingC. expedited forwardingD. best effort forwarding
An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?() A. EXP bitsB. VPI / VCIC. shim headerD. SNAP header
A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?() A. It performs a label pop operation and an IP lookup.B. It performs a label swap operation and an IP lookup.C. It sends an error message toward the egress router.D. It sends an error message toward the ingress router.
In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?() A. single ATM headerB. single Ethernet headerC. ATM header followed by a PPP headerD. ATM header followed by an Ethernet header
A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?() A.DSLAMB.DSL modemC.ERX Edge RouterD.customer workstation
Which command is used on the local router to invoke a loopback mode on a remote ERX Edge Router?() A.AB.BC.CD.D
In a frame ，the MPLS label is imposed（）.A、After the Layer3 header and before Layer2 headerB、After the Layer2 header and before Layer3 headerC、Within the Layer 3 headerD、Before the layer 2 header
Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）A、ip sa-validateB、ip split-horizonC、ip access-routesD、ip filter-options
End users are failing to log in to the network. Which command is used on the ERX Edge Router to validate communications with the RADIUS server?（）A、test ppp aaaB、test aaa pppC、test radius userD、test user radius
What is the default Quality of Service traffic class used by the ERX Edge Router?（）A、bronze forwardingB、assured forwardingC、expedited forwardingD、best effort forwarding
A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?（）A、It performs a label pop operation and an IP lookup.B、It performs a label swap operation and an IP lookup.C、It sends an error message toward the egress router.D、It sends an error message toward the ingress router.
What is used as label in cell-based MPLS ？（）A、VPIB、VCIC、VPI and VCID、Specific 4 bytes labelE、None of above
Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）A、The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRB、TTL propagation cannot be disabled in an MPLS domainC、TTL propagation is only disabled on the ingress edge LSRD、The TTL field of the MPLS label header is set to 255E、The TTL field of the IP packet is set to 0
The ERX Edge Router in your Bridged 1483 network has multiple external DHCP servers configured.During discovery, which algorithm does the router use to decide which DHCP server to send packets to?（）A、direct modeB、round robinC、weighted round robinD、No algorithm is used.
A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?（）A、DSLAMB、DSL modemC、ERX Edge RouterD、customer workstation
Which configuration command is used to make the ERX Edge Router an NTP server？（）A、 set ntp-serverB、 set ntp serverC、 ntp-server enableD、 ntp server enable
In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?（）A、single ATM headerB、single Ethernet headerC、ATM header followed by a PPP headerD、ATM header followed by an Ethernet header
A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?（）A、DSLAMB、DSL modemC、ERX Edge RouterD、customer workstation
单选题Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）AThe TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRBTTL propagation cannot be disabled in an MPLS domainCTTL propagation is only disabled on the ingress edge LSRDThe TTL field of the MPLS label header is set to 255EThe TTL field of the IP packet is set to 0
单选题A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?（）AIt performs a label pop operation and an IP lookup.BIt performs a label swap operation and an IP lookup.CIt sends an error message toward the egress router.DIt sends an error message toward the ingress router.
单选题An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?（）AEXP bitsBVPI / VCICshim headerDSNAP header
单选题Which configuration command is used to make the ERX Edge Router an NTP server？（）A set ntp-serverB set ntp serverC ntp-server enableD ntp server enable