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CCIE Routing & Switching 400-101 Real Questions | IT-Dumps
Which two statements about PPP PAP are true? (Choose two)
A. It requires two-way authentication.
B. It can protect against playback attacks.
C. It is supported only on synchronous interfaces.
D. It is vulnerable to trial-and error attacks.
E. Login attempts are controlled by the remote node.
In a simple MPLS L3VPN, which two tasks are performed by the PE router? (Choose two.)
A. It establishes pseudo wires with other PEs.
B. It exchanges VPNv4 and VPNv6 routes with CE Devices.
C. It assigns labels to routes in individual VPNs.
D. It forwards labeled packets to CE devices.
E. It exchanges VPNv4 or VPNv6 route with other PE routers.
What are the two BFD modes? (Choose two)
Which statement about the default QoS configuration on a Cisco switch is true?
A. All traffic is sent through four egress queues.
B. Port trust is enabled.
C. The Port Cos value is 0.
D. The Cos value of each tagged packet is modified.
Which two statements about IPv4 and IPv6 networks are true? (Choose two.)
A. In IPv6, hosts perform fragmentation.
B. IPv6 uses a UDP checksum to verify packet integrity.
C. In IPv6, routers perform fragmentation.
D. In IPv4, fragmentation is performed by the source of the packet.
E. IPv4 uses an optional checksum at the transport layer.
F. IPv6 uses a required checksum at the network layer.
Which two EtherChannel modes can create an LACP EtherChannel ?
Which command can you enter to disable logging for terminal lines?
A. no logging trap
B. no logging monitor
C. no logging buffer
D. no logging console
E. no logging count
Which two options are purposes of MSDP SA filtering? (Choose two.)
A. to allow the filtering of PIM messages between peers
B. to allow all SA message to be processed by MSDP peers
C. to improve the scalability of an MSDP multicast environment
D. to reduce the number of multicast address that are shared to MSDP peers
E. to allow the filtering of IGMP messages between peers
F. to reduce the number of multicast address that are distributed to other devices in the same multicast domain
Which options is the default LACP load-balancing algorithm for IP traffic on Layer 3?
A. the source and destinnation IP port
B. the destination IP port
C. the source and destination IP address
D. the destination Porte
E. the source IP port
Which statement about STP port states is true?
A. A port in the blocking state remains in that state for 30 seconds before transitioning to the listening state.
B. Listening and learning are transitory port states that use the forward delay timer.
C. When a port transitions to the learning state, it can send and receive data frames.
D. A port in the blocking state learns address and receives BPDUs.
Which two statements are true about an EVPL? (Choose two.)
A. It has a high degree of transparency.
B. It does not allow for service multiplexing.
C. The EVPL service is also referred to as E-line.
D. It is a point-to-point Ethernet connection between a pair of UNIs.
Which OpenStack component implements role-based access control?