QUESTION 51
What does the SNMP object “ospfNbrTable” provide?

A.    a table of nonvirtual neighbor information
B.    a list of neighbors for the OSPF interface
C.    area border list of neighbors
D.    a list of OSPF-to-NetBIOS exchanges

Answer: A

QUESTION 52
Which Cisco IOS Software command lengthens the BGP update time reduce the number of updates that are sent when flapping BGP inks are causing network instability?

A.    timers bgp
B.    bgp dampening
C.    neighbor timers
D.    bgp aggregate-timer
E.    neighbor advertisement-interval

Answer: B

QUESTION 53
Which Cisco IOS XR Software Route Policy Language policy will set the weight to 50 for routes that match the prefix-set “test”?

A.    route-policy new
if ip-address in test then
set weight 50
endif
end-policy
B.    route-policy new
match ip address prefix-list test
set weight 50
end-policy
C.    route-policy new
if destination in test then
set weight 50
endif
end-policy
D.    route-policy new
match prefix-list test
set weight 50
end-policy

Answer: C

QUESTION 54
To influence the inbound traffic flow into an AS, which BGP attribute would signal an external AS to use the preferred path unto the AS?

A.    local preference
B.    MED
C.    Weight
D.    next-hop
E.    origin

Answer: B

QUESTION 55
Output from the show ip bgp command shows the state of the router IBGP sessions to be active.
Which of the following statements may be true?

A.    No neighbors have been configured
B.    Connections to the neighbors are up and operational
C.    The router cannot find its neighbors in its IGP routing table
D.    Prefixes to advertise have not been specified with the network command.

Answer: C

QUESTION 56
In an effort to decrease BGP convergence time, the BGP scan timer has been lowered. What is possible side effect of this action?

A.    There are slow or no responses to the console or Telnet sessions
B.    Maximum packet-per-second throughput will increase.
C.    Batch updates will be held for a shorter time
D.    The BGP table can become out of sync with the rest of the network

Answer: A

QUESTION 57
Which way can you distribute BGP processes to achieve better scalability on CRS-1 router s that run Cisco IOS XR software?

A.    between the active RP and the standby RP
B.    between the active RP and the MSBs
C.    between the active RP and the DRPs
D.    between the active RP and the PRPs

Answer: C

QUESTION 58
What will be the result of the aggregate-address 192.168.0.0 255.255.0.0 BGP command?

A.    The router that is doing the aggregation will advertise the 192 168 0 0/16 summary route as long as
there is at least one specific route within the range in the BGP table
B.    The more specific routes will be suppressed and only the 192 168 0.0/16 summary route will be
advertised
C.    The BGP table size on the router that is performing the route aggregation will be reduced
D.    The flap of the more specific route will not be visible to the rest of the network

Answer: A

QUESTION 59
What type of LSA will be used by an OSPF ABR to advertise lm al routes from a standard are to a
backbone area?

A.    type 1 router LSAs if -ill prefixes are advertised, or as type 3 summary LSAs if the prefixes are
summarized
B.    type 2 network LSAs
C.    type 3summary LSAs, whether or not the prefixes are summarized
D.    type 5 external LSAs

Answer: C

QUESTION 60
Without using route reflectors or confederations, an AS with 20 routers will require how many IBGP peerings?

A.    20
B.    45
C.    190
D.    200
E.    400

Answer: C

If you want to pass Cisco 642-775 successfully, donot missing to read latest lead2pass Cisco 642-775 dumps.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-775.html

QUESTION 41
Refer to the exhibit. Referring to the output from the show command display, which four statements are correct? (Choose four)

A.    172 16 4 0/22 is an aggregated route and the summary-only option was used
B.    2.2.2.2/32 is a local prefix on the R2 router
C.    1.0.0.0 is a local prefix on the R2 router
D.    10.1.1.1 is an EBGP peer
E.    2.2.2.2 is an EBGP peer
F.    3.3.3.3 is an IBGP peer

Answer: ABDF

QUESTION 42
When using Cisco IOS show commands to examine BGP statistics toy noticed that the one of the BGP peers is in the active state. What does that indicate?

A.    The BGP neighborship to the BGP peer is up.
B.    The BGP peer is actively sending III SI’ updates.
C.    The BGP session is not established to the BGP peer
D.    The 3-way TCP handshake with the BGP peer has successfully completed

Answer: C

QUESTION 43
Which two configuration modes are valid when configuring BGP on Cisco IOS XR Software? (Choose two)

A.    route-reflector configuration mode
B.    router configuration mode
C.    peer-group configuration mode
D.    neighbor address-family configuration mode

Answer: BD

QUESTION 44
Which statement about BGP configuration in Cisco IOS XR Software is true?

A.    IPv4 is the default address-family.
B.    VPNv4 is the default address-family.
C.    There is no default address-family.
D.    IPv4 multicast is the default address-family.

Answer: A

QUESTION 45
Refer to the exhibit. Two Cisco IOS routers that are configured with OSPF cannot establish adjacency. Examine the information collected from r1 and r2 routers. Why cannot adjacency be established?

A.    network-type mismatch
B.    different MTU
C.    authentication password mismatch
D.    area ID mismatch

Answer: B

QUESTION 46
Refer to the exhibit. The OSPF database shows that there are two OSPFs 92.168.1.0. What caused the router to install the one particular path in the routing table instead of the other?

A.    The administrative distance is lower.
B.    The path not being used has aged out.
C.    E1 routes take precedence over E2 routes.
D.    The chosen path has the smallest OSPF metric
E.    Intra-area routes are preferred over interarea routes

Answer: A

QUESTION 47
Refer to the exhibit. What will be the multi-exit-discriminator value for a route with community values of 1583.241 1583:4241 if the Cisco IOS XR Software Route Policy Language policy “test” is applied?

A.    50
B.    75
C.    125
D.    will not change

Answer: B

QUESTION 48
Refer to the exhibit The Cisco IOS Software platform PE1 has interface GigabitEthernet port 0/0 connected to the Cisco IOS XR software platform PE4 interface GigabitEthernet 0/4/0/2. OSPF cannot establish an adjacency. What is a possible solution to the problem?

A.    Explicitly configure the Cisco lOS XR Software interface to be active OSPF interface
B.    Configure OSPF on each platform to ignore the interface MTU
C.    Adjust the Cisco lOS XR Software hello and dead times to match Cisco IOS software
D.    Change the interface configurations on both platforms to point network type

Answer: C

QUESTION 49
What is BGP CEF purge time on a CRS-1?

A.    the time required to remove BGP routes from the FIB after clearance notification
B.    the time required to remove BGP routes from the RIB after clearance notification
C.    the time required to declare a BGP neighbor as down
D.    the time required to remove routes from the BGP routing table

Answer: D

QUESTION 50
Refer to the exhibit. R1 and R3 are trying to peer with each other, but the session will not establish. What can be done to allow BGP to establish the session?

A.    Both routers should set the BGP next hop as self.
B.    Each router must explicitly activate the session before it can be established.
C.    On both routers, specify that the source of the session is the loopback interface.
D.    Increase the number of hops that are allowed when building the BGP session between the routers.

Answer: CD

If you want to pass Cisco 642-775 successfully, donot missing to read latest lead2pass Cisco 642-775 exam questions.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-775.html

QUESTION 31
How will the syslog report an error condition that is detected in the BGP session?

A.    %BGP-3-BADMASK
B.    %BGP-3-NOTIFICATION:
C.    %BGP-3-INSUFCHUNKS:
D.    %BGP-3-MAXPFXEXCEED:

Answer: B

QUESTION 32
These commands have been issued on all OSPF routers.
router ospf 1
ispf
exit
How do these commands improve the performance of OSPF?

A.    They help OSPF react faster to a local interface failure.
B.    They help OSPF converge faster in reaction to a network event.
C.    They eliminate the OSPF 30-minute LSA refresh and institute independent LSA aging
D.    They save processor and memory resources during network instability by delaying SPF recalculation.

Answer: D

QUESTION 33
To improve BGP performance in your network, you would like to withdraw routes immediately when the next hop of the route becomes unavailable instead of waiting for the scan interval to detect the problem. Which Cisco IOS software command will configure this failure?

A.    bgp inject-map
B.    bgp dampening
C.    neighbor fall-over
D.    import path selection
E.    neighbor update-source

Answer: C

QUESTION 34
Drag and Drop

Answer:

QUESTION 35
Refer to the exhibit. What is the expected output of route-policy “test” if the starting MED value is 12?

A.    set the MED to 42 and then explicit drop the route
B.    set the MED to 42 and then pass the route
C.    drop the route due to implicit drop
D.    set the MED to 42 and then implicit drop the route

Answer: A

QUESTION 36
Which command displays all interfaces that are configured In OSPF on Cisco IOS XR Software?

A.    show ospf interface
B.    show interface ospf
C.    show ip ospf adj
D.    show ospf database

Answer: A

QUESTION 37
Refer to the exhibit. A client asked you to help solve a problem This customer has two BGP routers, each connected to its upstream provider. Because of administrative restrictions, these two routers do not have an IBGP session between them, and each router redistributes certain prefixes into OSPF and vice versa The customer would like to preserve the AS path attribute for prefixes that cross the OSPF domain.

Which route-map set option will let the customer preserve the attribute?

A.    set tag
B.    set as-path
C.    set as-path tag
D.    set extcommunity

Answer: B

QUESTION 38
The service provider has allocated a block of IPv4 addresses for your network 172.16.1.0 with a subnet mask of 25 bits. You company DHCP server was configured to use this block According to your company standards, the first available IP address is 172.16.1.130. The NOC has informed you that devices that use this block have partial connectivity. They communicate with other but cannot reach out side networks.
What is the reason for this behavior?

A.    The service provider, by mistake, allocated the RFC 1918 address.
B.    The IP addresses that are distributed by the DHCP server are not on the same subnet as a
default gateway
C.    Because everything is configured correctly, the most likely cause is a connectivity issue with a
service provider.
D.    Because everything is configured correctly, the most likely cause is a DHCP server issue

Answer: B

QUESTION 39
Refer to the exhibit. Two routers that run Cisco IOS Software cannot establish a BGP session. There is IP connectivity between them. After examining the network topology and router configuration, identify the line number that prevents the establishment of BGP session.

A.    5
B.    8
C.    10
D.    19

Answer: D

QUESTION 40
Which protocol establishes communications over TCP port 179?

A.    IS-IS
B.    OSPF
C.    EIGRP
D.    BGP
E.    IPSec
F.    PIM

Answer: D

If you want to pass Cisco 642-775 successfully, donot missing to read latest lead2pass Cisco 642-775 dumps.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-775.html

QUESTION 21
In a service provider environment, which two are the main purposes of BGP and IGP? (Choose two.)

A.    BGP is used to provide connectivity within an AS.
B.    BGP is used to exchange Internet routing information with other ISPs and those customers that require it.
C.    IGP is used to provide reachability for BGP neighbors and BGP next-hop addresses.
D.    IGP is used to exchange external routing information.

Answer: BC

QUESTION 22
In OSPF, which area type typically carries all the routing information?

A.    stubby area
B.    totally stubby area
C.    regular nonbackbone area
D.    backbone Area 0

Answer: D

QUESTION 23
Which LSA type carries routing information from one area into another area?

A.    type 3 summary LSA
B.    type 5 external LSA
C.    type 1 router LSA
D.    type 2 network LSA

Answer: A

QUESTION 24
How can a customer influence path selection for incoming traffic?

A.    by changing MED for routes that are sent to the ISP
B.    by changing local preference for routes that are sent to the ISP
C.    by prepending an AS number to routes sent to the ISP
D.    by changing the weight for routes that are sent to the ISP

Answer: C

QUESTION 25
Which MIB supports BGP on Cisco devices?

A.    CISCO-BGP4-MIB
B.    IETF-BGP4-MIB
C.    CISCO-ROUTE-MIB
D.    CISCO-IPBGP-MIB

Answer: A

QUESTION 26
Which Cisco IOS Software feature should you enable to monitor IGP neighbor flaps?

A.    IP SLA
B.    adjacency change logging
C.    NetFlow
D.    route dampening
E.    control plane protection

Answer: B

QUESTION 27
Which route-map statement allows further processing of these route-map sections even after the map condition has been met?

A.    goto
B.    continue
C.    jump
D.    follow

Answer: B

QUESTION 28
Refer to the exhibit. Data that is destined for 1.1.1.17 is being dropped by this router, though it is in the BGP table. Why are theses packets being dropped?

A.    Synchronization is disabled
B.    The next-hop address is not reachable by this router
C.    The AS edge router toward the destination set the next hop to itself
D.    The classful address .0.0.0 has no static route to NULL entry in the IP routing table

Answer: B

QUESTION 29
What is the correct CLI hierarchy when configuring an interface for OSPF in Cisco IOS XR software?

A.    interface, area, router
B.    area, interface, router
C.    router, area, interface
D.    area, router, interface

Answer: C

QUESTION 30
What is the most significant BGP attribute that is used for path selection in Cisco IOS XR Software?

A.    MED
B.    Weight
C.    local preference
D.    router ID

Answer: B

If you want to pass Cisco 642-775 successfully, donot missing to read latest lead2pass Cisco 642-775 practice tests.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-775.html

QUESTION 11
Which command gathers information on BGP route instability in Cisco IOS XR Software?

A.    show ip bgp summary
B.    show bgp flap-statistics
C.    show ip bgp neighbors
D.    show bgp ip dampening

Answer: B

QUESTION 12
Which two statements correctly describe the IBGP split-horizon rule?

A.    Updates that are received on an EBGP session are forwarded to IBGP and EBGP.
B.    Updates that are received on an EBGP session are not back out the EBGP peers that are in the
same neighboring AS.
C.    Updates that are received on an IBGP session are forwarded to all EGBP peers
D.    Updates that are received on an IBGP session can be forwarded to other IBGP peers synchronization
is turned off.

Answer: AB

QUESTION 13
Which four BGP parameters can be tuned to influence BGP convergence time? (Choose four)

A.    scan time
B.    stuck in active timer
C.    advertisement interval
D.    keepalive interval
E.    holdtirne interval
F.    idle time

Answer: ACDE

QUESTION 14
Which statement accurately describes the BGP community filtering in Cisco IOS XR Software?

A.    can be configured for IBGP neighbors only
B.    can be configured for both IBGP and EBGP neighbors
C.    can be configured for EBGP neighbors only
D.    cannot be configured for IBGP or EBGP neighbors

Answer: B

QUESTION 15
If the network is experiencing high CPU usage that is caused by OSPF, which four options might you consider to reduce the CPU usage? (Choose four)

A.    Enable OSPF incremental Shortest Path First.
B.    Enable OSPF Shortest Path First throttling.
C.    Enable multiple OSPF areas.
D.    Enable auto-summary.
E.    Enable special OSPF area types (stub, totally stubby).
F.    Enable the “broadcast” OSPF network type.

Answer: ABCE

QUESTION 16
Refer to the exhibit. Two Cisco IOS routers that are configured with OSPF cannot establish adjacency. Examine the information that is collected from r1 and r2. Why cannot the adjacency be established?

A.    Network-type mismatch
B.    Different MTU
C.    Subnet mismatch
D.    Area ID mismatch

Answer: C

QUESTION 17
Refer to the exhibit. The NOC has informed you about a problem on a Gigabit Ethernet link between a newly installed CRS-1 that is running Cisco IOS XR Software and Cisco IOS router. These two routers cannot establish OSPF adjacency. When you connected to CRS-1, you noticed that the Gigabit Ethernet interface MTU is 1500. You must adjust the interface MTU on the Cisco IOS router.

Which MTU should you configure on the Cisco IOS router interface to match the MTU that is configured on the Cisco IOS XR software?

A.    1500
B.    1486
C.    1486
D.    1488

Answer: A

QUESTION 18
Which list does the SNMP object “ospflfTable” provide?

A.    Internet-facing routes
B.    IGP fast-timers
C.    OSPF-to-EGP mappings
D.    interfaces from the viewpoint of OSPF

Answer: D

QUESTION 19
Drag and Drop

Answer:

QUESTION 20
For a CRS-1 router that runs Cisco IOS XR Software Release 3.6.6 in an OSPF core. Which protocol or feature improves router availability and can operate independently of remote router protocol support?

A.    BFD
B.    NSF IETF
C.    NSR
D.    PIM
E.    IGMP
F.    MPLS LDP sync
G.    MPLS-TE FRR

Answer: C

If you want to pass Cisco 642-775 successfully, donot missing to read latest lead2pass Cisco 642-775 practice tests.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-775.html