2013年9月25日星期三

HP HP0-Y37 examen pratique questions et réponses

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Code d'Examen: HP0-Y37
Nom d'Examen: HP (Migrating &Troubleshooting Enterprise Networks)
Questions et réponses: 104 Q&As

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NO.1 DRAG DROP
Click the Task button. In a multihome AS, you are replacing one of the BGP-configured Cisco routers with
a BGP-configured HP A-Series router. You want to reduce the downtime during the migration process.
Place the steps for the migration in the correct order.
Answer:

NO.2 A provider of MPLS services configures MPLS Layer-3 VPN services for three customers. Each
customer has three branch offices that will be interconnected by MPLS Layer-3 VPNs. One customer is
advertising their IP prefixes between sites using BGP. This customer establishes a backup link directly
connecting Site-1 to Site-2. Which BGP attribute can the provider use to prevent routing update loops in
the MPLS network?
A. COO
B. FOO
C. KOO
D. SOO
E. VOO
Answer: D

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NO.3 Click the Exhibit button.
You are replacing a Cisco BGP router with an HP A-Series BGP router. Examine the router's
configurations. Which statements accurately describe the routers' configurations? (Select three.)
A. Both configurations are identical in function.
B. The HP A-Series router will not implement the same BGP functions as the Cisco router.
C. Both BGP routers announce a static route to its BGP neighbor.
D. Both BGP routers announce network 215.34.10.0/22.
E. Neither BGP routers can announce a redistributed static route because no metrics are set.
F. The A-Series router's prefix list is misconfigured.
Answer: A,C,D

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NO.4 Which protocols are supported on the HP A-Series switch? (Select three.)
A. SSH v1 only
B. SSH v1 and v2
C. RADIUS only
D. TACACS+ and RADIUS
E. TACACS and RADIUS
F. SNMPv2c only
G. SNMPv2c and SNMPv3
Answer: B,D,G

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NO.5 Click the Exhibit button.
A provider of MPLS services configures MPLS Layer-3 VPN services for two customers. Each customer
has three branch offices that will be interconnected by MPLS Layer-3 VPNs. The address blocks chosen
by the customers for each site are shown in the following chart:
The provider uses OSPF as its IGP with the Loopback 0 addresses shown as the OSPF router-id and the
MPLS LSR-ID. A traceroute from Cust-A Site #1 to Cust-A Site #2 displays 5 intermediate routers.
Which statements are true? (Select three.)
A. MPLS label TTL expires on P-10.
B. TTL propagation is enabled on PE-1.
C. All but the first trace is processed by PE-2.
D. IP TTL expires on P-20.
E. PE-1 generates ICMP echo replies on behalf of P-10 and P-20.
F. TTL propagation is disabled on PE-1.
Answer: A,B,C

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NO.6 Click the Exhibit button.
A provider of MPLS services configures MPLS Layer-3 VPN services for two customers. Each customer
has three branch offices that will be interconnected by MPLS Layer-3 VPNs. The following are address
blocks chosen by the customers for each site as shown in the chart:
The provider uses OSPF as its IGP with the Loopback 0 addresses shown as the OSPF router-id and the
MPLS LSR-ID. Customer A uses a default route on each site. Customer B uses eBGP to exchange routes
with the provider. All MPLS layer-3 VPNs are functioning properly. Which configuration change will cause
Customer-A Site 1 to lose access to Customer-A Site 2?
A. [PE-1]
bgp 1
undo import-route static
B. [P-10]
ospf 1
area 0
abr-summary 16.0.0.2 30 cost 1000
C. [PE-1]
int vlan 100
undo mpls ldp
D. [PE-3]
bgp 1
undo peer 16.0.0.1 reflect-client
E. [P-10]
ip route static 10.1.0.0 16 null 0 preference 9
Answer: B

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NO.7 Which statement is true about BGP Route Refresh? (Select two.)
A. Route Refresh is a feature for supported CPU functions with BGP routers that manage high number of
IP Prefixes.
B. Route Refresh is advertised as a BGP capability to BGP neighbors during BGP session
establishment.
C. BGP Route Refresh eliminates the need for a Hard Reset of the BGP connection with a BGP neighbor
when route policies are changed.
D. With Route Refresh, a BGP router stores all BGP prefixes sent by a BGP neighbor.
E. With Route Refresh, a BGP Hard Reset is used to generate inbound updates from a neighbor or to
generate outbound updates to a neighbor.
Answer: B,C

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NO.8 Click the Exhibit button and view the three exhibits.
When interface Serial 4 of Router 2 fails, traffic from Router 1 destined for network 156.152.0.0/16 leaves
AS 65001 via the Serial 3 interface of Router 1. The administrator prefers that this traffic leaves AS 65001
through interface Serial 5 of Router 2. Which configuration change will achieve the desired results?
A. Router-2#
bgp 100
peer 16.0.0.1 next-hop-local
B. Router-2#
route-policy Policy permit node 10
apply local-preference 500
bgp 100
peer 156.152.5.1 route-policy Policy
C. Router-2#
route-policy Policy permit node 10
apply preferred-value 500
bgp 100
peer 156.152.5.1 route-policy Policy
D. Router-1#
route-policy Policy permit node 10
apply preferred-value 500
bgp 100
peer 16.0.0.2 route-policy Policy
Answer: A

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NO.9 Which statements about BPDU Guard are correct? (Select three.)
A. It is a Cisco proprietary protocol that prevents other switches from sending BDPUs.
B. BPDU Guard filters the standard BDPUs received on the port.
C. BPDU Guard filters the PVST BDPUs received on the port.
D. BPDU Guard generates an alarm when a BPDU is received on the port and may block the port.
E. BPDU Guard is an open standard.
F. BPDU Guard is not a protocol. It must be applied locally and individually on switches.
Answer: B,D,F

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NO.10 Click the Exhibit button.
Which statements are true about the BGP configuration of this HP A-Series router? (Select two.)
A. The router announces IP prefix 200.1.0.0/23 to its BGP neighbor if the network is in routing table.
B. The as-path ACL define networks that were last forwarded by AS 200.
C. The configuration includes a filter out to the neighbor 222.222.10.1.
D. The BGP router is in AS 200 and its BGP neighbor is in AS 100.
E. The BGP router will establish a BFD connection with its BGP neighbor 222.222.10.1 if the neighbor is
also configured for BFD
Answer: A,E

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NO.11 A company's LAN is composed of Cisco switches only. The network runs Rapid PVST+ with the short
pathcost method. Cisco distribution switches are set as root and secondary root in all VLANs. These two
switches connect over an Etherchannel. The company wants to install HP PoE switches at the edge of its
LAN. The customer wants to keep the load-balancing of traffic that is set in PVST+. What are the possible
options? (Select three.)
A. ensure Spanning Tree is disabled on the HP edge switch, and configure loop-protection on edge ports
to avoid local loops
B. if the HP edge switch is an A-Series switch, configure Smart Link with load balancing between
instances
C. if the HP edge switch is an A-Series switch, configure Rapid PVST+ on it
D. configure MSTP on the HP edge switch, but set the cost of its uplink higher than that on the channel
between the distribution switches
E. configure MSTP on the HP edge switch and divide the VLANs into different instances
F. configure MSTP on the HP edge switch and set its uplink port cost to 5
G. configure MSTP on the HP edge switch, but set the cost of its uplink lower than that on the channel
between the distribution switches
Answer: A,B,D

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NO.12 Which statements are true about DHCP Snooping? (Select two.)
A. DHCP Snooping is a Cisco Proprietary protocol. The standard is not yet ratified.
B. DHCP Snooping prevents end nodes from receiving IP address assignments from an unauthorized
DHCP server.
C. DHCP Snooping is a malicious attack against the DHCP servers.
D. The DHCP Snooping binding table contains information about hosts interconnected with a trusted
interface.
E. DHCP Snooping is when a switch acts as a DHCP server for end nodes that connect to that particular
switch. This way, end nodes always get an IP address.
F. When configuring DHCP Snooping on a switch, you define which ports are trusted to receive DHCP
offers. Typically uplinks of a switch are trusted and Edge ports are untrusted.
Answer: B,F

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NO.13 What is a characteristic of load balancing in RRPP?
A. multiple RRPP rings within a domain
B. overlapping RRPP rings
C. multiple RRPP domains with different root priorities
D. It is not possible to load balance with RRPP.
E. multiple RRPP domains sharing the same ring
Answer: E

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NO.14 You want to add HP edge switches to a company's Cisco network. Distribution Cisco switches are set as
the Rapid PVST+ root and secondary root. You connect HP A-Series switches that are running their
factory default configuration to the two Cisco distribution switches. What will happen.?
A. If you connect the edge switch with a redundant link to both distribution switches, you create a loop and
a broadcast storm on the Cisco network.
B. Cisco distribution switches send tagged PVST+ BPDUs to the HP switch. Because 802.1q is not yet
configured on HP switch uplinks, the PVST+ BPDUs are dropped. A loop occurs.
C. Cisco distribution switches send untagged standard BPDUs to the HP switch in VLAN 1, and in
response the HP switch blocks one of the uplinks on all VLANs, preventing a loop.
D. Cisco distribution switches send untagged standard BPDUs to HP switch in VLAN 1, which the HP
switch forwards to the other distribution switch, preventing a loop. The HP switch drops all tagged data
frames.
Answer: D

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NO.15 You want to enable RRPP on interface Gigabit Ethernet 1/0/4 of an HP A-Series switch. Which
commands should be configured on this interface? (Select two.)
A. stp disable
B. rrrp ring 1 enable
C. port link-type trunk
D. port link-type rrpp
E. stp enable
Answer: A,C

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