CCNA 5.0 (CCNA R&S) – Switched Networks Final Exam P2
31
What are two advantages of EtherChannel? (Choose two.)
Configuring the EtherChannel interface provides consistency in the configuration of the physical links.
Load balancing occurs between links configured as different EtherChannels.
EtherChannel uses upgraded physical links to provide increased bandwidth.
Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.
Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state.
32
A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel?
The EtherChannel will transition to a down state.
Spanning Tree Protocol will recalculate the remaining trunk links.
The EtherChannel will remain functional.
Spanning Tree Protocol will transition the failed physical interface into forwarding mode.
33
Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?
Multilink PPP
DTP
LACP
PAgP
34
What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.)
The interfaces that are involved need to be contiguous on the switch.
All the interfaces need to work at the same speed.
All the interfaces need to be working in the same duplex mode.
All interfaces need to be assigned to different VLANs.
Different allowed ranges of VLANs must exist on each end.
CCNA 5.0 (CCNA R&S) – Switched Networks Final Exam P2
35
ccna 5.0 s3 – 35
Refer to the exhibit. An administrator is troubleshooting an EtherChannel configuration that is causing the port channel to drop between switches S1 and S2. Based on the output that is shown, which action would allow switches S1 and S2 to automatically negotiate an EtherChannel with PAgP?
On S1, change the channel group mode to “active.”
On S1, change the channel group mode to “desirable.”
On S2, change the channel group mode to “on.”
On S2, change the channel group number to “1.”
CCNA 5.0 (CCNA R&S) – Switched Networks Final Exam P2
36
ccna 5.0 s3 – 36
Refer to the exhibit. A network administrator is configuring inter-VLAN routing. However, the communication between VLAN 10 and VLAN 20 fails. Based on the output of the show vlan command, what is the cause of the problem?
Gi1/1 and Gi1/2 are not configured as trunk mode.
Gi1/1 and Gi1/2 are not assigned to their respective VLANs.
The IP addresses on Gi0/0 and Gi0/1 are switched by mistake.
The IP addresses on Gi0/0 and Gi0/1 are not on the same network.
37
A network administrator is using the router-on-a-stick method to configure inter-VLAN routing. Switch port Gi1/1 is used to connect to the router. Which command should be entered to prepare this port for the task?
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# spanning-tree vlan 1
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# spanning-tree portfast
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# switchport mode trunk
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# switchport access vlan 1
38
ccna 5.0 s3 – 38
Refer to the exhibit. The partial configuration that is shown was used to configure router on a stick for VLANS 10, 30, and 50. However, testing shows that there are some connectivity problems between the VLANs. Which configuration error is causing this problem?
A configuration for the native VLAN is missing.
There is no IP address configured for the FastEthernet 0/0 interface.
The wrong VLAN has been configured on subinterface Fa0/0.50.
The VLAN IP addresses should belong to the same subnet.
39
An administrator was troubleshooting a router-on-a-stick topology and concluded that the problem was related to the configuration of VLANs on the router subinterfaces. Which two commands can the administrator use in the router to identify the problem? (Choose two.)
show controllers
show ip interface
show ip protocols
show running-config
show vlan
40
ccna 5.0 s3 – 40
Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.65 and a destination address of 192.168.1.161. What will the router do with this packet?
The router will drop the packet.
The router will forward the packet out interface FastEthernet 0/1.1.
The router will forward the packet out interface FastEthernet 0/1.2.
The router will forward the packet out interface FastEthernet 0/1.3.
The router will forward the packet out interface FastEthernet 0/1.2 and interface FastEthernet 0/1.3.
The router will broadcast the packet out every sub-interface except for the one that received the packet.
41
ccna 5.0 s3 – 41
Refer to the exhibit. A Layer 3 switch routes for three VLANs and connects to a router for Internet connectivity. Which two configurations would be applied to the switch? (Choose two.)
(config)# interface gigabitethernet 1/1
(config-if)# no switchport
(config-if)# ip address 192.168.1.2 255.255.255.252
(config)# interface vlan 1
(config-if)# ip address 192.168.1.2 255.255.255.0
(config-if)# no shutdown
(config)# interface gigabitethernet1/1
(config-if)# switchport mode trunk
(config)# interface fastethernet0/4
(config-if)# switchport mode trunk
(config)# ip routing
42
Which two statements are characteristics of routed ports on a multilayer switch? (Choose two.)
They are not associated with a particular VLAN.
The interface vlan <vlan number> command has to be entered to create a VLAN on routed ports.
They support subinterfaces, like interfaces on the Cisco IOS routers.
They are used for point-to-multipoint links.
In a switched network, they are mostly configured between switches at the core and distribution layers.
43
ccna 5.0 s3 – 43
Refer to the exhibit. Devices on VLANs 5 and 6 cannot communicate. What could be the cause for the lack of inter-VLAN communication?
SVIs have not been created.
R1 does not have a default gateway.
Routing has not been enabled on the multilayer switch.
The GigabitEthernet 0/1 port has not been enabled on the switch.
The GigabitEthernet 0/1 port has not been made a routed port.
44
A DHCPREQUEST message has been sent from the client to the DHCP server. What information is included in the message?
initial message to locate a DHCP server
formal request for the offered IP address
confirmation that the IP address has been allocated to the client
denial message to reject the first offer from the DHCP server
45
What will be the result of adding the command ip dhcp excluded-address 10.10.4.1 10.10.4.5 to the configuration of a local router that has been configured as a DHCP server?
Traffic that is destined for 10.10.4.1 and 10.10.4.5 will be dropped by the router.
Traffic will not be routed from clients with addresses between 10.10.4.1 and 10.10.4.5.
The DHCP server will not issue the addresses ranging from 10.10.4.1 to 10.10.4.5.
The router will ignore all traffic that comes from the DHCP servers with addresses 10.10.4.1 and 10.10.4.5.
46
Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled?
ip dhcp pool
ip address dhcp
service dhcp
ip helper-address
47
ccna 5.0 s3 – 47
Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from this DHCP server. The output of the debug ip dhcp server command shows “DHCPD: there is no address pool for 192.168.1.1″. What is the problem?
The 192.168.1.1 address has not been excluded from the DHCP pool.
The pool of addresses for the 192Network pool is incorrect.
The default router for the 192Network pool is incorrect.
The 192.168.1.1 address is already configured on Fa0/0.
48
ccna 5.0 s3 – 48
Refer to the exhibit. Which statement shown in the output allows router R1 to respond to stateless DHCPv6 requests?
ipv6 unicast-routing
dns-server 2001:DB8:8::8
ipv6 dhcp server LAN1
ipv6 nd other-config-flag
prefix-delegation 2001:DB8:8::/48 00030001000E84244E70
49
ccna 5.0 s3 – 49
Refer to the exhibit. A network administrator is implementing the stateless DHCPv6 operation for the company. Clients are configuring IPv6 addresses as expected. However, the clients are not getting the DNS server address and the domain name information configured in the DHCP pool. What could be the cause of the problem?
The GigabitEthernet interface is not activated.
The router is configured for SLAAC operation.
The DNS server address is not on the same network as the clients are on.
The clients cannot communicate with the DHCPv6 server, evidenced by the number of active clients being 0.
50
What two conditions have to be met in order to form a cluster that includes 5 access points? (Choose two.)
Clustering mode must be enabled on the APs.
At least two controllers are needed to form the cluster.
The APs have to be connected on the same network segment.
The APs must all be configured to use different radio modes.
The APs must use different cluster names.
51
Which wireless network topology is being configured by a technician who is installing a keyboard, a mouse, and headphones, each of which uses Bluetooth?
ad hoc mode
hotspot
infrastructure mode
mixed mode
52
An employee connects wirelessly to the company network using a cell phone. The employee then configures the cell phone to act as a wireless access point that will allow new employees to connect to the company network. Which type of security threat best describes this situation?
cracking
denial of service
rogue access point
spoofing
53
While attending a conference, participants are using laptops for network connectivity. When a guest speaker attempts to connect to the network, the laptop fails to display any available wireless networks. The access point must be operating in which mode?
active
mixed
open
passive
54
What are the two methods that are used by a wireless NIC to discover an AP? (Choose two.)
sending an ARP request
delivering a broadcast frame
transmitting a probe request
initiating a three-way handshake
receiving a broadcast beacon frame
55
When would a network engineer configure an access point with channel bonding?
when security is an issue
when more throughput is needed
when older wireless NICs are being used
when trunking is enabled between the access point and switch
56
What method of wireless authentication is dependent on a RADIUS authentication server?
WEP
WPA Personal
WPA2 Personal
WPA2 Enterprise
57
Users on an IEEE 801.11n network are complaining of slow speeds. The network administrator checks the AP and verifies it is operating properly. What can be done to improve the wireless performance in the network?
Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.
Change the authentication method on the AP.
Switch to an 802.11g AP.
Set the AP to mixed mode.
58
ccna 5.0 s3 – 58
59
ccna 5.0 s3 – 59
60
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Why can PC0 not communicate with Server0 by using the IP address as the target?
The dns-server command is missing on Router1.
The ip helper-address command is missing on Router0.
The DHCP pool configuration is incorrect on Router1.
The ip helper-address command is missing on Router2.
P1