A BGP VPLS is configured between two Nokia 7750 SRs (PE1 and PE2). Which of the following SDPs is selected to auto-bind the service?
ASDP 10
BSDP 20
CSDP 30
DSDP 40
What are the limitations of a traditional layer 2 switch? (Choose 3}
AIsolates collision domains.
BRequires layer 2 loop prevention.
CSlow response to topology changes.
DLimited to 4094 vlans per switch.
EIncreased flooding.
For periodic traffic between hosts, which of the following statements about the use of remote and local age timers is TRUE on the Nokia 7750 SR?
AThe lower the age time, the higher the probability of flooding of unknown traffic.
BThe higher the age time, the higher the probability of flooding of unknown traffic.
CThe local and remote age timers are, by default, the same value.
DThere is no relationship between the age timers and the probability of flooding of unknown traffic.
RSTP is running in the network. Which bridge will become the root bridge?
ABridge B
BBridge C
CBridge D
DBridge E
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Click on the exhibit below.
If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?
APE-A must replicate the frame to all devices participating in the VPLS
BPE-A must replicate the frame to all PEs within Metro A
CPE-A must replicate the frame to all devices in the Metro A
DAll of the above
Click on the exhibit below.
Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?
AThe port that the SAP belongs to must have the correct ether type configured.
BThe SAP must be configured with the right VLAN tag.
CThe SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.
DAll of the above.
PE-1, 2, 3, 4 and 5 are connected using a full mesh of LSPs using one-to-one FRR. How many LSPs will originate from PE-5 in this full mesh network?
A4
B6
C8
D10
How does an H-VPLS reduce the full mesh requirement of a VPLS?
AIt uses only spoke SDPs to connect the core network and to connect to the MDU.
BIt uses spoke SDPs to connect the core network, and mesh SDPs to connect to the MDU.
CIt uses mesh SDPs to connect the core network, and spoke SDPs to connect to the MDU.
DIt uses spoke SDPs to connect within a metro VPLS, and mesh SDPs to connect the two or more metro VPLS together.
If facility-mode fast reroute occurs, what is the impact on the encapsulated frame size?
ANo change
BDecrease by 4 bytes
CIncrease by 4 bytes
DIncrease by 2 bytes
EDecrease by 2 bytes
A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS 300. The design requires the least amount of signaling and the least amount of configuration changes for existing sites. Which one of the following is the best way to meet the requirements?
AConfigure a mesh SDP between all existing PE routers and the new PE router.
BConfigure a mesh SDP between PE-C and PE-D.
CConfigure a spoke SDP between PE-C and PE-D.
DConfigure spoke SDPs between all PE routers.
Which of the following is NOT a VPLS specific OAM test?
Amac-purge
Bmac-populate
Cmac-ping
Dmac-trace
Ecpe-ping
Fsdp-ping
What is the MTU impact on the SDP path-mtu if fast reroute facilities-mode is implemented on the LSP?
AThere will be no impact on the path-mtu.
BThe path-mtu will decrease by4 bytes.
CThe path-mtu will increase by 4 bytes.
DThe path-mtu will decrease by 8 bytes.
EThe path-mtu will increase by 8 bytes.
Which of the following best describes the behavior of flooded traffic when it is received on a mesh SDP?
ATraffic is flooded to all SAPs in the service.
BTraffic is flooded to all SAPs and spoke SDPs in the service.
CTraffic is flooded to all SAPs and mesh SDPs in the service.
DTraffic is flooded to all SAPs, spoke SDPs and mesh SDPs in the service.
Which of the following statements about a Management VPLS is TRUE?
AOperates in transparent mode
BInherits SAP and SDP state from uVPLS
CDoes not carry customer traffic
DRuns one instance of RSTP per u-VPLS
An IP filter is configured and applied to an SAP in an IES service on a Nokia 7750 SR. Which of the following statements about traffic with a destination IP 192.168.1.2/32 is TRUE?
ATraffic is flooded to all SAPs and SDPs within the IES.
BTraffic is forwarded to SDP 100:1 and all SAPs within the IES.
CTraffic is dropped.
DTraffic is forwarded to SDP 100:1.
Which of the following statements about G.8032 Ethernet Ring Protection is FALSE?
AUses standard Ethernet dot1q and QinQ encapsulation.
BRequires R-STP as the protocol to carry control information.
CEthernet Ring APS is a defined ITU standard.
DStandard Ethernet forwarding, learning and flooding rules apply.
Which one of the following statements about MAC flush is FALSE?
AMinimizes the blackholing of unicast traffic
BClears part (or all) of the FDB in the participating PE routers in the event of a failure
CHas no benefit to the distribution of multicast traffic
DHas no requirement for T-LDP signaling
A network port using null encapsulation has an MTU of 1514 bytes. When MPLS transport is used without FRR, what is the maximum service MTU of a VPLS using that port?
A1536
B1514
C1496
D1492
E1488
When using T-LDP to signal service parameters between two PEs, which MTUs must match?
ASAP MTUs
BSDP MTUs
CService MTUs
DPath MTUs
A routed-VPLS is connected to an IES interface. The VPLS service MTU is 1400 bytes and the IES interface IP-MTU is 1500 bytes. Which of the following statements is TRUE?
AAny IP packet larger than 1386 bytes will be fragmented.
BAny IP packet larger than 1400 bytes will be fragmented.
CAny IP packet larger than 1414 bytes will be fragmented.
DAny IP packet larger than 1500 bytes will be fragmented.
Five VPLS services have been configured between two PE routers. What is the minimum amount of SDPs that must be configured?
A5-one for each service.
B2-one in each direction.
C10-five in each direction.
DNone of the above.
The following VPLS services have been configured. Which of the following statements is TRUE?
AAll untagged frames will be dropped.
BAll frames with more than one VLAN tag will be dropped.
CA frame with an outer VLAN tag of 200 and an inner VLAN tag of 300 will be forwarded to VPLS 3.
DA frame with a single VLAN tag of 500 will be forwarded to VPLS 1.
EA frame with an outer VLAN tag of 100 will be forwarded to VPLS 2.
An MC-LAG is configured with default parameters. When a failed interface recovers, the active link reverts to the restored interface.
ATRUE
BFALSE
Which of the following is a true statement?
AThe lower the age-time, the greater the amount of flooding
BThe higher the age-time, the greater the amount of flooding.
CThe lower the age-time, the lower the amount of flooding.
DThere is no relationship between the age-time and the amount of flooding.
