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Exam A
A department decides to replace its hub with a Catalyst 2950 switch that is no longer needed by another department. To prepare the switch for installation, the network administrator has erased the startup configuration and reloaded the switch. However, PCs that are connected to the switch experience various connectivity problems. What is a possible cause of the problem?
A. The VLAN database was not erased.
B. The management VLAN is disabled.
C. The running configuration should have been erased.
D. The “mode” button was not pressed when the switch was reloaded.
E. The switch was not configured with an IP address or a default gateway.
Correct Answer: A
Which two of these statements regarding RSTP are correct? (Choose two.)
A. RSTP cannot operate with PVST+.
B. RSTP defines new port roles.
C. RSTP defines no new port states.
D. RSTP is a proprietary implementation of IEEE 802.1D STP.
E. RSTP is compatible with the original IEEE 802.1D STP.
Correct Answer: BE
A network administrator needs to configure port security on a switch. Which two statements are true? (Choose two.)
A. The network administrator can apply port security to dynamic access ports.
B. The network administrator can apply port security to EtherChannels.
C. When dynamic MAC address learning is enabled on an interface, the switch can learn new addresses, up to the maximum defined.
D. The sticky learning feature allows the addition of dynamically learned addresses to the running configuration.
E. The network administrator can configure static secure or sticky secure MAC addresses in the voice VLAN.
Correct Answer: CD

What are two characteristics of a switch that is configured as a VTP client? (Choose two.)
A. If a switch that is configured to operate in client mode cannot access a VTP server, then the switch reverts to transparent mode.
B. On switches that are configured to operate in client mode, VLANs can be created, deleted, or renamed locally.
C. The local VLAN configuration is updated only when an update that has a higher configuration revision number is received.
D. VTP advertisements are not forwarded to neighboring switches that are configured in VTP transparent mode.
E. VTP client is the default VTP mode.
F. When switches in VTP client mode are rebooted, they send a VTP advertisement request to the VTP servers.
Correct Answer: CF QUESTION 5

At which layer of the OSI model is RSTP used to prevent loops?
A. physical
B. data link
C. network
D. transport
Correct Answer: B
The network administrator has been asked to give reasons for moving from IPv4 to IPv6. What are two valid reasons for adopting IPv6 over IPv4? (Choose two.)
A. no broadcast
B. change of source address in the IPv6 header
C. change of destination address in the IPv6 header
D. Telnet access does not require a password
E. autoconfiguration
Correct Answer: AE
The network technician is planning to use the subnet mask on the network. Which three valid IP addresses can the technician use for the hosts? (Choose three.)
Correct Answer: BEF

Cisco 640-816 tests containing questions that cover all sides of tested subjects that help our members to be prepared and keep high level of professionalism. The main purpose of Cisco 640-816 exam is to provide high quality test that can secure and verify knowledge, give overview of question types and complexity that can be represented on real exam certification


Which of these represents an IPv6 link-local address?
A. FE80::380e:611a:e14f:3d69
B. FE81::280f:512b:e14f:3d69
C. FEFE:0345:5f1b::e14d:3d69
D. FE08::280e:611:a:f14f:3d69
Correct Answer: A

What are three characteristics of the OSPF routing protocol? (Choose three.)
A. It converges quickly.
B. OSPF is a classful routing protocol.
C. It uses cost to determine the best route.
D. It uses the DUAL algorithm to determine the best route.
E. OSPF routers send the complete routing table to all directly attached routers.
F. OSPF routers discover neighbors before exchanging routing information.
Correct Answer: ACF
An administrator is troubleshooting a problem between routers that are using different versions of RIP. Which two commands would provide information about which version of RIP was being sent and received on an interface? (Choose two.)
A. show ip protocols
B. show ip route rip
C. show interfaces
D. debug rip routing
E. debug ip rip
Correct Answer: AE
What does the “Inside Global” address represent in the configuration of NAT?
A. the summarized address for all of the internal subnetted addresses
B. the MAC address of the router used by inside hosts to connect to the Internet
C. a globally unique, private IP address assigned to a host on the inside network
D. a registered address that represents an inside host to an outside network
Correct Answer: D
A network engineer wants to allow a temporary entry for a remote user with a specific username and password so that the user can access the entire network over the Internet. Which ACL can be used?
A. standard
B. extended
C. dynamic
D. reflexive
Correct Answer: C
Which command displays the CHAP authentication process as it occurs between two routers?
A. debug chap authentication
B. debug authentication
C. debug chap ppp
D. debug ppp authentication
Correct Answer: D
A network administrator has configured access list 173 to prevent Telnet and ICMP traffic from reaching a server with the address of Which commands can the administrator issue to verify that the access list is working properly? (Choose three.)
A. Router# ping
B. Router# debug access-list 173
C. Router# show open ports
D. Router# show access-lists
E. Router# show ip interface
Correct Answer: ADE
An organization is concerned that too many employees are wasting company time accessing the Internet. Which access list statement would stop World Wide Web access for employees on the range of subnets from to
A. access-list 103 deny tcp any eq 80
B. access-list 103 deny tcp any eq 80
C. access-list 103 deny http any
D. access-list 103 deny tcp any eq 80
E. access-list 103 deny tcp any eq 80
Correct Answer: B
What are two drawbacks of implementing a link-state routing protocol? (Choose two.)
A. the sequencing and acknowledgment of link-state packets
B. the requirement for a hierarchical IP addressing scheme for optimal functionality
C. the high volume of link-state advertisements in a converged network
D. the high demand on router resources to run the link-state routing algorithm
E. the large size of the topology table listing all advertised routes in the converged network
Correct Answer: BD
What can be done to Frame Relay to resolve split-horizon issues? (Choose two.)
A. Disable Inverse ARP
B. Create a full-mesh topology.
C. Develop multipoint subinterfaces.
D. Configure point-to-point subinterfaces.
E. Remove the broadcast keyword from the frame-relay map command.
Correct Answer: BD
Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)
A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for the interface.
Correct Answer: AD
Workstation A has been assigned an IP address of Workstation B has been assigned an IP address of The two workstations are connected with a straight- through cable. Attempts to ping between the hosts are unsuccessful. What are two things that could be attempted that would allow communications between the hosts? (Choose two.)
A. Replace the straight-through cable with a crossover cable.
B. Change the subnet mask of the hosts to /25.
C. Change the subnet mask of the hosts to /26.
D. Change the address of Workstation A to
E. Change the address of Workstation B to
Correct Answer: AB
What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two.)
A. They create split-horizon issues.
B. They require a unique subnet within a routing domain.
C. They emulate leased lines.
D. They are ideal for full-mesh topologies.
E. They require the use of NBMA options when using OSPF.
Correct Answer: BC
Which two data link layers are supported by Cisco IOS Software for IPv6? (Choose two.)
D. Frame Relay SVC
E. Frame Relay PVC
Correct Answer: BE
Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two.)
A. SW1#show port-secure interface FastEthernet 0/12
B. SW1#show switchport port-secure interface FastEthernet 0/12
C. SW1#show running-config
D. SW1#show port-security interface FastEthernet 0/12
E. SW1#show switchport port-security interface FastEthernet 0/12
Correct Answer: CD
Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two.)
A. CHAP uses a two-way handshake.
B. CHAP uses a three-way handshake
C. CHAP authentication periodically occurs after link establishment.
D. CHAP authentication passwords are sent in plaintext.
E. CHAP authentication is performed only upon link establishment.
F. CHAP has no protection from playback attacks.
Correct Answer: BC

Which two are features of IPv6? (Choose two.)
A. anycast
B. broadcast
C. multicast
D. podcast
E. allcast
Correct Answer: AC
Which three are characteristics of an IPv6 anycast address? (Choose three.)
A. one-to-many communication model
B. one-to-nearest communication model
C. any-to-many communication model
D. a unique IPv6 address for each device in the group
E. the same address for multiple devices in the group
F. delivery of packets to the group interface that is closest to the sending device
Correct Answer: BEF

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