CNA 150 - Cisco II - Modules 6 & 7

It is Cisco proprietary.

Which statement is true regarding the use of PAgP to create EtherChannels? a. It requires full duplex. b. It increases the number of ports that are participating in spanning tree. c. It requires more physical links than LACP does. d. It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation. e. It is Cisco proprietary.

DHCPDISCOVER DHCPREQUEST

A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server? (Choose two.) a. DHCPDISCOVER b. DHCPACK c. DHCPOFFER d. DHCPREQUEST e. DHCPNAK

DHCP 67

Which protocol automates assignment of IP addresses on a network, and which port number does it use? (Choose two.) a. DHCP b. DNS c. SMB d. 53 e. 67 f. 80

The remaining two interfaces continue to load balance traffic.

A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down? a. The remaining two interfaces continue to load balance traffic. b. The remaining two interfaces become separate links between the two switches. c. One interface becomes an active link for data traffic and the other becomes a backup link. d. The EtherChannel fails.

The EtherChannel will remain functional.

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? a. Spanning Tree Protocol will transition the failed physical interface into forwarding mode. b. Spanning Tree Protocol will recalculate the remaining trunk links. c. The EtherChannel will transition to a down state. d. The EtherChannel will remain functional.

SW2(config-if-range)# channel-group 1 mode desirable

A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode auto . Which command must be used on SW2 to enable this EtherChannel? a. SW2(config-if-range)# channel-group 1 mode passive b. SW2(config-if-range)# channel-group 1 mode desirable c. SW2(config-if-range)# channel-group 1 mode on d. SW2(config-if-range)# channel-group 1 mode active

LACP

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link? a. PAgP b. LACP c. Multilink PPP d. DTP

DHCPDISCOVER = a client initiating a message to find a DHCP server DHCPOFFER = a DHCP server responding to the initial request by a client DHCPREQUEST = the client accepting the IP address provided by the DHCP server DHCPACK = the DHCP server confirming that the lease has been accepted

Match the elements to the description: a. DHCPACK b. DCHPDISCOVER c. DHCPOFFER d. DHCPREQUEST 1. a client initiating a message to find a DHCP server 2. a DHCP server responding to the initial request by a client 3. the client accepting the IP address provided by the DHCP server 4. the DHCP server confirming that the lease has been accepted

interface GigabitEthernet0/1channel-group 1 mode desirable

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Which set of configuration commands issued on SW1 will successfully complete the EtherChannel link between SW1 and SW2? a. interface GigabitEthernet0/1no shutdown b. interface Port-channel 1no shutdown c. interface GigabitEthernet0/2channel-group 2 mode desirable d. interface GigabitEthernet0/1channel-group 1 mode desirable

Configure SW2 EtherChannel mode to desirable.

Refer to the exhibit. A network administrator is configuring an EtherChannel link between two switches, SW1 and SW2. However, the EtherChannel link fails to establish. What change in configuration would correct the problem? a. Configure SW2 EtherChannel mode to desirable. b. Configure SW2 EtherChannel mode to on. c. Configure SW1 EtherChannel mode to on. d. Configure SW2 EtherChannel mode to auto.

The EtherChannel fails to establish.

Refer to the exhibit. A network administrator is configuring an EtherChannel link between two switches, SW1 and SW2. Which statement describes the effect after the commands are issued on SW1 and SW2? a. The EtherChannel is established after SW2 initiates the link request. b. The EtherChannel is established after SW1 initiates the link request. c. The EtherChannel is established without negotiation. d. The EtherChannel fails to establish.

The EtherChannel is not functional.

Refer to the exhibit. A network administrator issued the show etherchannel summary command on the switch S1. What conclusion can be drawn? a. The EtherChannel is suspended. b. The EtherChannel is not functional. c. The port aggregation protocol PAgP is misconfigured. d. FastEthernet ports Fa0/1, Fa0/2, and Fa0/3 do not join the EtherChannel.

The EtherChannel was not configured with the same allowed range of VLANs on each interface.

Refer to the exhibit. An EtherChannel was configured between switches S1 and S2, but the interfaces do not form an EtherChannel. What is the problem? a. The interface port-channel number has to be different on each switch. b. The switch ports were not configured with speed and duplex mode. c. The switch ports have to be configured as access ports with each port having a VLAN assigned.​ d. The EtherChannel was not configured with the same allowed range of VLANs on each interface.

desirable

Refer to the exhibit. An administrator wants to form an EtherChannel between the two switches by using the Port Aggregation Protocol. If switch S1 is configured to be in auto mode, which mode should be configured on S2 to form the EtherChannel? a. auto b. on c. off d. desirable

255.255.255.255

Refer to the exhibit. PC1 is configured to obtain a dynamic IP address from the DHCP server. PC1 has been shut down for two weeks. When PC1 boots and tries to request an available IP address, which destination IP address will PC1 place in the IP header? a. 192.168.1.1 b. 192.168.1.255 c. 255.255.255.255 d. 192.168.1.8

Traffic cannot be sent to two different switches through the same EtherChannel link.

Refer to the exhibit. The administrator tried to create an EtherChannel between S1 and the other two switches via the commands that are shown, but was unsuccessful. What is the problem? a. Traffic cannot be sent to two different switches through the same EtherChannel link. b. Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.​ c. Traffic can only be sent to two different switches if EtherChannel is implemented on Gigabit Ethernet interfaces.​ d. Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches.​

EtherChannel

Refer to the exhibit. Which switching technology would allow each access layer switch link to be aggregated to provide more bandwidth between each Layer 2 switch and the Layer 3 switch? a. trunking b. HSRP c. PortFast d. EtherChannel

Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection. Configuring the EtherChannel interface provides consistency in the configuration of the physical links.

What are two advantages of EtherChannel? (Choose two.) a. Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection. b. Load balancing occurs between links configured as different EtherChannels. c. Configuring the EtherChannel interface provides consistency in the configuration of the physical links. Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state. d. EtherChannel uses upgraded physical links to provide increased bandwidth.

It allows directly connected switches to negotiate an EtherChannel link. It allows the use of multivendor devices.

What are two advantages of using LACP? (Choose two.) a. It allows directly connected switches to negotiate an EtherChannel link. b. It eliminates the need for configuring trunk interfaces when deploying VLANs on multiple switches. c. It decreases the amount of configuration that is needed on a switch. d. It provides a simulated environment for testing link aggregation. e. It allows the use of multivendor devices. f. LACP allows Fast Ethernet and Gigabit Ethernet interfaces to be mixed within a single EtherChannel.

source IP to destination IP source MAC to destination MAC

What are two load-balancing methods in the EtherChannel technology? (Choose two.) a. combination of source port and IP to destination port and IP b. source IP to destination IP c. source port to destination port d. combination of source MAC and IP to destination MAC and IP e. source MAC to destination MAC

desirable auto

Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.) a. on b. desirable c. active d. auto e. passive

All the interfaces need to work at the same speed. All the interfaces need to be working in the same duplex mode.

What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.) a. All the interfaces need to work at the same speed. b. All interfaces need to be assigned to different VLANs. c. Different allowed ranges of VLANs must exist on each end. d. All the interfaces need to be working in the same duplex mode. e. The interfaces that are involved need to be contiguous on the switch.

The allowed range of VLANs must be the same on both switches.

What is a requirement to configure a trunking EtherChannel between two switches? a. The allowed range of VLANs must be the same on both switches. b. The participating interfaces must be assigned the same VLAN number on both switches. c. The participating interfaces must be physically contiguous on a switch. d. The participating interfaces must be on the same module on a switch.

New traffic is discarded by the switch because it is unable to be processed.

What is the outcome of a Layer 2 broadcast storm? a. Routers will take over the forwarding of frames as switches become congested. b. New traffic is discarded by the switch because it is unable to be processed. c. CSMA/CD will cause each host to continue transmitting frames. d. ARP broadcast requests are returned to the transmitting host.

on

When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets? active auto on desirable

The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers.

When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast? a. The client does not yet know the IP address of the DHCP server that sent the offer. b. The DHCP server may be on a different subnet, so the request must be sent as a broadcast. c. The client does not have a MAC address assigned yet, so it cannot send a unicast message at Layer 2. d. The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers.

DHCPDISCOVER

Which DHCP IPv4 message contains the following information? Destination address: 255.255.255.255Client IPv4 address: 0.0.0.0Default gateway address: 0.0.0.0Subnet mask: 0.0.0.0 a. DHCPACK b. DHCPDISCOVER c. DHCPOFFER d. DHCPREQUEST

SW1: onSW2: on

Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic? a. SW1: onSW2: on b. SW1: desirableSW2: desirable c. SW1: autoSW2: autotrunking enabled on both switches d. SW1: autoSW2: autoPortFast enabled on both switches e. SW1: passiveSW2: active

MST

Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard? STP Rapid PVST+ PVST+ MST

It is made by combining multiple physical links that are seen as one link between two switches.

Which statement describes a characteristic of EtherChannel? a. It can combine up to a maximum of 4 physical links. b. It can bundle mixed types of 100 Mb/s and 1Gb/s Ethernet links. c. It consists of multiple parallel links between a switch and a router. d. It is made by combining multiple physical links that are seen as one link between two switches.

A trunked port can be part of an EtherChannel bundle.

Which statement describes an EtherChannel implementation? a. EtherChannel operates only at Layer 2. b. PAgP cannot be used in conjunction with EtherChannel. c. A trunked port can be part of an EtherChannel bundle. d. EtherChannel can support up to a maximum of ten separate links.

redundant links between Layer 2 switches removing single points of failure with multiple Layer 2 switches

Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.) a. static default routes b. implementing VLANs to contain broadcasts c. redundant links between Layer 2 switches d. link-state dynamic routing that provides redundant routes e. removing single points of failure with multiple Layer 2 switches

speed VLAN information

Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.) a. port ID b. PAgP mode c. MAC address d. speed e. VLAN information