Braindumps of 642-066
Advanced Routing and Switching for Field Engineers
Submitting dumps with some changes. The original is
also available in www.examcheets.com
Q NO: 1
In MPLS networks, what is the benefit of disabling TTL
A. to improve MPLS convergence time
B. to improve the IGP convergence time
C. to hide visibility to the core (provider) routers
in the MPLS network
D. to provide a visible extension of IP TTL functionality
in an MPLS-enabled domain
E. to provide a visible extension of MPLS TTL functionality
in a non-MPLS-enabled domain
Q NO: 2
While troubleshooting a network outage, you discover
that an employee brought a switch from home into the
office to connect additional equipment to the network.
In order to increase his speed, he connected this switch
to both network ports in his office, resulting in a
bridge loop. Which of these can you implement to prevent
future occurrences of this issue?
B. root guard
C. BPDU guard
Q NO: 3
Which one of these class maps was configured to match
traffic for CS5?
A. router#show class-map pass
Class Map match-all real-time (id 2)
Match ip dscp 40
B. router#show class-map forward
Class Map match-all forward (id 3)
Match ip dscp 18
C. router#show class-map block
Class Map match-all block (id 4)
Match ip dscp 43
D. router#show class-map real-time
Class Map match-all block (id 5)
Match ip dscp 16
Q NO: 4
Which tool allows a LAN client to determine which router
should be the first hop to a particular remote destination,
allowing simplified client configuration and processing
without creating a single point of failure?
B. Dynamic Routing Protocol
Q NO: 5
When implementing MPLS VPNs between CE and PE routers,
which of these statements is correct?
A. If using IS-IS as the PE-CE routing protocol, no
redistribution is required.
B. If using static routes between the CE and PE routers,
no redistribution of other VPN routes is required.
C. If the PE-CE protocol is not BGP, redistribution
of other VPN routes from MP-BGP is required
D. If RIP is the routing protocol that is used between
the PE-CE routers, no redistribution is required, but
any other protocol will require redistribution.
E. If using OSPF or EIGRP as the PE-CE routing protocol,
redistribution is not required, but any other protocol
or static route will require redistribution.
Q NO: 6
You would like to log messages up to the severity level
"Notification." Which three of these commands
will you need to issue in order to enable syslog messages
to be sent to the syslog server at the IP address 10.1.5.5?
A. logging on
B. logging host 10.1.5.5
C. logging trap notifications
D. logging syslog notifications
E. logging monitor notifications
F- logging console notifications
Q NO: 7
How can Cisco NetFlow be used to aid in the operation
and troubleshooting of QoS issues?
A. NetFlow can report on the number of traffic matches
for each class map in a configured QoS policy configuration.
B. NetFlow records can be used to understand traffic
profiles per class of service for data, voice, and video
C. NetFlow can discover the protocols in use and automatically
adjust QoS traffic classes to meet policy-map requirements.
D. NetFlow can be configured to identify voice and video
traffic flows and place them into a lowlatency queue
for expedited processing.
Q NO: 8
While your MPLS core is using Cisco routers, the core
of a company you have acquired is not. After extending
your MPLS VPN networks by integrating the cores, you
discover that the end-toend LPS path between PE routers
cannot be established. Which of the following may have
caused this problem?
A. the MTUs do not match
B. the BGP protocol versions do not match
C. MPLS is not supported between different vendors
D. MP-BGP is not supported between different vendors
E. you are using Cisco proprietary TDP in your existing
Q NO: 9
You are troubleshooting an issue, which is causing full-sized
packets entering the MPLS cloud to be dropped. You have
discovered that one of the switches in the MPLS core
is not a Cisco switch, but otherwise the MPLS MTU size
is set to 1508 bytes on the routers. Based on this information,
which of these may be the reason the packets are being
A. no switches support oversized packets
B. by definition, the maximum MTU is 1500 bytes
C. the switch on your MPLS core that was not produced
by Cisco does not support oversized packets
D. in this situation, the MTU setting is irrelevant;
in MPLS the maximum acceptable IP packet size is 1492
E. as MPLS VPN labeling increases the size of the packet
by 8 bytes, the IP MTU should have been changed to 1508