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Cisco 642-055 Exam - Cheat-Test.com Free 642-055 Sample Questions: 1.Which three of these items are IPv6 transition mechanisms? (Choose three.)
A.NATv6
B.PATv6
C.ISATAP
D.automatic 4to6 relay tunnels
E.dual stack configurations
F.manually configured overlay tunnels
Answer: C, E, F
2.Refer to the exhibit. You are migrating a network from IGRP to OSPF. What must you do to ensure that connectivity and reachability of all networks is maintained between routing protocols when OSPF has the longer subnet mask?
A.Use the default metric of 1.
B.This scenario should not present any reachability problems if the autonomous systems are the same.
C.Add multiple static routes in the gateway router pointing to the OSPF network.
D.Add a static route in the gateway router for 128.103.35.0/24 pointing to null0.
Answer: D
3.Your customer wants to build a network for a financial trading floor that has a requirement for multiple highvalue transactions, which are also vital to the customer. What are the two most critical requirements? (Choose two.)
A.no single point of failure
B.trading database server location
C.redundant application servers location
D.deterministic response to all failures
E.determine which protocol to use
Answer: A, D
4.Which of these tools should you use to compress VoIP packets on a lowspeed Frame Relay circuit?
A.RTP header compression
B.TCP header compression
C.FRF.9 payload compression
D.Predictor payload compression
E.Cisco proprietary payload compression
Answer: A
5.Referring to the debug output shown below, which one of the statements is correct?
A.FE80::260:3EFF:FE47:1530 is the sitelocal address of R1.
B.2001:DB8:C18:1::D0C is a linklocal address.
C.The last ICMP message received is a router advertisement message.
D.The type 129 ICMP echo reply message indicates an MTU error.
E.The type 129 message is an ICMP redirect message.
Answer: C
6.You are working with a client to deploy QoS on their Frame Relay WAN. They would like to be able to allow packets to cross the Frame Relay WAN but have them marked as discard eligible if they exceed the QoS policy. How would you accomplish this task?
A.Configure a service policy that sets the DE bit and apply it to the serial interface connected to the Frame Relay WAN.
B.Configure a policy map that has a burstmax action of setting the DE bit if the policy is exceeded.
C.Configure a class map that sets the DE bit so that the policy map can correctly apply a violateaction if the policy is exceeded.
D.Configure a policy map that has a violateaction to change the DE bit from 0 to 1.
Answer: D
7.Refer to the exhibit. You are troubleshooting a high availability network that is having longerthanacceptable failover times. What command will have the most significant impact in this problem?
A.pim queryinterval 1 sec
B.ip pim queryinterval 100 msec
C.ip query piminterval 10 msec
D.pim queryinterval 100 msec
Answer: B
8.Refer to the exhibit. Which two configuration changes will result in Router_A peering with neighbor Router_B using address 192.168.1.2? (Choose two.)
A.Use the no synchronization command to allow the neighbor relationship to be established without an IGP route.
B.Use the neighbor ebgpmultihop command to override the onehop EBGP limit.
C.Use a route reflector to allow the routes to be propagated correctly.
D.Use the neighbor nexthopself command to allow the routers to peer using their loopback addresses instead of their directly connected addresses.
E.Use a confederation to make Router_A and Router_B appear to be IBGP neighbors. F.Configure Router_A and Router_B in the same AS.
Answer: B, F
9.Refer to the exhibit. You have a Cisco router directly connected to a nonCisco router via a leased T1 line. The service provider has validated that the T1 is operational. What should be completed for communications between routers to commence?
A.Reload both routers.
B.Reset the interface on both routers.
C.Enable Frame Relay on both routers.
D.Enable PPP encapsulation on both routers.
E.Configure a routing protocol on both routers.
Answer: D
10.Refer to the exhibit. You have a Cisco router and a nonCisco router directly connected to a service provider cloud. You want to set up dual connectivity into the corporate network. Which protocol must you configure?
A.Hot Standby Router Protocol
B.Gateway Load Balancing Protocol
C.Virtual Router Redundancy Protocol
D.Multigroup Hot Standby Router Protocol
Answer: C
11.With a VPN Accelerator Module 2+ (VAM2+) installed in a Cisco 7200 series router, what will be the resulting action when entering the command no crypto engine accelerator slot number?
A.removes the VAM2+ crypto engine feature and disables the associated configuration commands from the router
B.disables the crypto engine hardware acceleration, resulting in all crypto functions to be performed in software
C.disables dual VAM2+ hardware stateful failover capabilities
D.disables OIR on the VAM2+ module
Answer: D
12.Refer to the exhibit. In analyzing the configuration of the router, which three of these statements are correct? (Choose three.)
A.Neighbor 172.16.32.14 will receive VPNv4 routes.
B.Neighbor 172.16.32.15 will receive Internet routes.
C.Neighbor 172.16.32.15 will receive VPNv4 routes.
D.Neighbor 172.16.32.27 will receive VPNv4 routes.
E.Neighbor 172.16.32.27 will receive Internet routes.
F.Neighbor 172.16.32.14 will receive both VPNv4 and Internet routes.
Answer: C, D, E
13.Refer to the exhibit. Which show command would be used to display NBAR classified traffic on interface FastEthernet0/1?
A.show int fa 0/1 nbar
B.show int fa 0/1 policymap
C.show policymap int fa 0/1
D.show ip nbar protocoldiscovery
Answer: D
14.Which command displays only those entries in a BGP table with specific AS_PATH attributes?
A.show ip bgp regexp
B.show ip bgp paths
C.show ip bgp communitylist
D.show ip bgp inconsistentas
Answer: A
15.When an IP packet is Layer 3switched from a source in one VLAN to a destination in another VLAN, which field in a packet will be rewritten?
A.Layer 2 TTL
B.Layer 3 TTL
C.Layer 3 source address
D.Layer 3 transport protocol
E.Layer 3 destination address
Answer: B
16.Which QoS mechanism will allow a single policy to be applied to multiple interfaces?
A.class map
B.policy map
C.service policy
D.ACL
Answer: C
17.How many subnets are possible in an enterprise that has just been assigned an IPv6 prefix by its ISP?
A.256
B.1024
C.4096
D.16384
E.65536
F.16777216
Answer: E
18.What is the most likely reason that an IBGP route that has been selected as a best route is not entered into the IP routing table?
A.The nexthop address is unreachable.
B.No loopback interface has been configured on a router.
C.BGP synchronization has been enabled.
D.Route reflectors are not passing updates properly.
Answer: C
19.You are working with a client to classify the different types of application traffic they will have
on their network and to assign a QoS value to each traffic flow. The client has identified the following applications: Internet traffic, Oracle, networkbased backups, AOL Instant Messenger, IP routing, voice, and voice signaling. Given these types of applications, how many different classes will need to be configured in QoS?
A.5
B.6
C.8
D.9
Answer: C
20.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?
A.Proxy ARP
B.Dynamic Routing Protocol
C.IRDP
D.VRRP
Answer: D
21.Your customer recently acquired a smaller competitor. The acquired company is not currently using Cisco routers, so you have connected the two WANs via an authenticated PPP link. After configuring both routers, issuing the show interface s0/0 command on the Cisco router shows the interface to be in the up/down state. Which two of these are possible causes? (Choose two.)
A.MTUs do not match.
B.Bandwidth statements do not match.
C.IP addresses are not in the same subnet.
D.CHAP passwords do not match.
E.CDP versions do not match.
Answer: A, D
22.You are configuring the Cisco IOS Firewall Websense URL Filtering feature set on a Cisco 3800 Series ISR. What would the Cisco IOS command ip urlfilter exclusivedomain permit www.cisco.com do?
A.Specifies the only domain for which traffic should be allowed.
B.Specifies the URL for the location of the Firewall Websense URL filtering server.
C.Specifies the domain for which the firewall should permit traffic without sending lookup requests.
D.Specifies that the designated domain receives exclusive traffic priorities.
Answer: C
23.What would the first line in this debug serial interface output indicate?
A.The mineseen HDLC sequence has missed more than three keepalives.
B.Keepalives are being received from the other end of a pointtopoint link and this end is not sending them.
C.The yourseen HDLC sequence number is out of order.
D.The HDLC myseq has missed more than three keepalive messages, the WAN link keepalive activity will not occur, and you should expect to see a Layer 2 issue.
Answer: B
24.What is the maximum number of Cisco Catalyst 3750 Series switches that can be united into a single manageable unit using the Cisco StackWise technology?
A.3
B.6
C.9
D.12
Answer: C
25.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?
A.RSTP
B.root guard
C.BPDU guard
D.GLBP
Answer: C
26.When EIGRP is used as the PECE routing protocol, which of these statements is correct?
A.Configuration of the VPN is only required on the PE router.
B.EIGRP can be used only as the PECE routing protocol if the PE and CE routers are in the same AS.
C.When using EIGRP as the PECE routing protocol, EIGRP does not require a VRF.
D.Unlike other routing protocols that are used between PE and CE routers, EIGRP supports backdoor links.
E.Other EIGRP AS routes are automatically advertised to the CE router and do not require a redistribution configuration command to be configured.
Answer: A
27.Which Cisco IOS command is used to troubleshoot a problem in which a BGP session stays in the active state?
A.debug ip bgp events
B.debug ip tcp events
C.debug ip bgp updates
D.debug ip tcp updates
E.debug ip bgp transactions F.debug ip tcp transactions
Answer: F
28.Refer to the exhibit. You are working with a client to deploy QoS on their WAN. They would like to use a fiveclass WANedge strategy. The classes will include voice, call signaling, critical data, data, and scavenger. Their individual WAN links are 512 Kb. When they try to attach the service policy WANEDGE to the interface multilink1, the router returns an error message. Which command should you add to the interface configuration to allow the service policy statement to be configured?
A.bandwidth 512
B.maxbandwidth 75
C.maxreservedbandwidth 100
D.maxreservedbandwidth 512
E.maxbandwidth 100
F.bandwidth 100
Answer: C
29.Which command is used to view IPv6 parameters related to the BGP process?
A.show ip bgp
B.show ipv6 bgp
C.show bgp ipv6
D.show ip bgp ipv6
E.show protocols ipv6
Answer: C
30.Which two statements are correct in verifying SPFv3 IPv6 routing configurations? (Choose two.)
A.OSPFv3 router ID is now 128 bits instead of 32 bits.
B.OSPFv3 area ID and linkstate ID are now 128 bits instead of 32 bits.
C.OSPFv3 is enabled perlink, not pernetwork.
D.OSPFv3 requires router to be running CEF.
E.When configuring a broadcast interface, OSPFv3 requires a list of OSPFv3 neighbors to be manually configured.
Answer: C, D |
