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IT0015-SA2
| Question | Answer |
|---|---|
| What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table? | Floods the network with the frame looking for the device |
| 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? | The EtherChannel fails to establish. |
| What one is a requirement to be able to configure an EtherChannel between two switches? | All the interfaces need to work at the same speed. |
| What will happen if one port in an EtherChannel is configured in VLAN22 & all other ports are configured in VLAN11? | The EtherChannel bundle will stay up if either PAgP or LACP is used |
| Rapid PVST+ is___________. | A Cisco enhancement of RSTP to provide a spanning-tree instance for each VLAN |
| Which one is an advantage of using LACP? | It allows directly connected switches to negotiate an EtherChannel link. |
| Which spanning tree standard supports only one root bridge so that traffic from all VLANs flows over the same path? | 802.1D |
| Which port role is assigned to the switch port that has the lowest cost to reach the root bridge? | root port |
| Which one is a network design feature that requires Spanning Tree Protocol (STP) to ensure correct network operation? | removing single points of failure with multiple Layer 2 switches |
| A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge? | bridge priority |
| Which channel group mode would place an interface in a negotiating state using PAgP? | desirable |
| 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 remain functional. |
| A trunk link between two switches has reached its capacity. How can this be addressed in the most economical way? | Combine physical ports into a high-speed logical link by configuring the EtherChannel |
| A switch is configured to run STP. What term describes a field used to specify a VLAN ID? | extended system ID |
| Which one is load-balancing method in the EtherChannel technology | source MAC to destination MAC |
| 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? | SW2(config-if-range)# channel-group 1 mode desirable |
| Which protocol is a link aggregation protocol? | PAgP |
| If you want to disable STP on a port connected to a server, which command would you use? | spanning-tree portfast |
| When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which port role could these interfaces function while in the forwarding state? | designated |
| Refer to the exhibit. While troubleshooting a switch, you executed the “show interface port-channel 1 etherchannel” command and it returned this output. Which information is provided by the Load value? | the number source-destination pairs on the link |
| Refer to the exhibit. Which switch will be the root bridge after the election process is complete? | S2 |
| When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets? | on |
| Which statement is true regarding the use of PAgP to create EtherChannels? | It is Cisco proprietary. |
| Which protocol is used to implement EtherChannel? | Port Aggregation Protocol |
| 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? | The EtherChannel was not configured with the same allowed range of VLANs on each interface. |
| A switch is configured to run STP. What term describes a non-root port that is permitted to forward traffic on the network? | designated port |
| Which one is an advantage of EtherChannel? | Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection. |
| Which mode is in PAgP? | Auto |
| Which one is an advantage of using LACP? | It allows the use of multivendor devices. |
| A switch is configured to run STP. What term describes the reference point for all path calculations? | root bridge |
| It is the Proprietary per VLAN implementation of IEEE 802.1w | RAPID PVST+ |
| Which Cisco command will initiate EtherChannel interface configuration mode? | interface port-channel interface-identifier |
| Which of the following statement is true? | A switch creates separate collision domains but one broadcast domain. A router provides a separate broadcast domain. |
| 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? | Traffic cannot be sent to two different switches through the same EtherChannel link. |
| A switch is configured to run STP. What term describes the switch port closest, in terms of overall cost, to the root bridge? | root port |
| What is a requirement to configure a trunking EtherChannel between two switches? | The allowed range of VLANs must be the same on both switches. |
| Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic? | SW1: on SW2: on |
| IEEE standard that reduces the number of STP instances | MSTP |
| What is the function of STP in a scalable network? | It disables redundant paths to eliminate Layer 2 loops. |
| What is a characteristic of spanning tree? | It is enabled by default on Cisco switches. |
| Which statement describes an EtherChannel implementation? | A trunked port can be part of an EtherChannel bundle. |
| What is a drawback to turning spanning tree off and having multiple paths through the Layer 2 switch network? | Broadcast frames are transmitted indefinitely. |
| Which statement is true about EtherChannel? | A trunk port can be part of an EtherChannel bundle |
| Refer to the exhibit. A network administrator issued the show etherchannel summary command on the switch S1. What conclusion can be drawn? | The EtherChannel is not functional. |
| A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root? | 61440 |
| A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge | 28672 |
| Which one is a component of a bridge ID? | extended system ID(Bridge Priority , MAC Address) |
| A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge? | bridge priority |
| 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? | EtherChannel |
| It is the Cisco Implementation of IEEE 802.1D | PVST+ |
| Refer to the exhibit. A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0? | The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation. |
| A router that provided DHCPv6 forwarding services is a DHCP Relay Agent | True |
| 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 c | The router is configured for SLAAC operation. |
| Identify which message type to the order of the stateful DHCPv6 process when a client first connects to an IPv6 network. DHCPv6 SOLICIT | Step 1 |
| The address pool of a DHCP server is configured with 172.21.121.0/25. The network administrator reserves 12 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts? | 114 |
| What is the reason that an ISP commonly assigns a DHCP address to a wireless router in a SOHO environment? | easy IP address management |
| Which protocol automates assignment of IP addresses on a network, and which port number does it use? | 67 |
| Under which circumstance would a router usually be configured as a DHCPv4 client? | This is an ISP requirement. |
| The first step in configuring a Stateless DHCPv6 server is enabling the IPv6 routing using the ipv6 unicast-routing command | True |
| To verify a Stateless DHCPv6 Client Router receiver other necessary DHPCv6 information, using The show ipv6 dhcp interface-type interface-number command in global configuration mode of the Server Router. | False |
| Identify which message type to the order of the stateful DHCPv6 process when a client first connects to an IPv6 network. DHCPv6 ADVERTISE | Step 2 |
| A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information? | DHCPACK |
| The address pool of a DHCP server is configured with 172.18.93.0/25. The network administrator reserves 10 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts? | 116 |
| Which DHCP IPv4 message contains the following information? Destination address: 255.255.255.255 Client IPv4 address: 0.0.0.0 Default gateway address: 0.0.0.0 Subnet mask: 0.0.0.0 | DHCPDISCOVER |
| Fill in the blank. Do not abbreviate Type a command to exclude the first fifteen useable IP addresses from a DHCPv4 address pool of the network 10.0.15.0/24. Router(config)# ip dhcp ______________ NOTE: use lowercase only. | excluded-address 10.0.15.1 10.0.15.15 |
| As a DHCPv4 client lease is about to expire, what is the message that the client sends the DHCP server? | DHCPREQUEST |
| Refer to the exhibit. Which destination MAC address is used when frames are sent from the workstation to the default gateway? | MAC address of the virtual router |
| A small coffee shop is offering free Wi-Fi to customers. The network includes a wireless router and a DSL modem that is connected to the local phone company. What method is typically used to configure the connection to the phone company? | Set the WAN connection in the wireless router as a DHCP client. |
| What is a method that can be used to generate an interface ID by an IPv6 host that is using SLAAC? | EUI-64 |
| A DHCP-enabled client PC has just booted. During which steps will the client PC use broadcast messages when communicating with a DHCP server? | DHCPDISCOVER |
| The address pool of a DHCP server is configured with 192.168.184.0/26. The network administrator reserves 18 IP addresses for access points. How many IP addresses are left in the pool to be assigned to other hosts? | 44 |
| 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? | 255.255.255.255 |
| Refer to the exhibit. A network administrator is implementing stateful DHCPv6 operation for the company. However, the clients are not using the prefix and prefix-length information that is configured in the DHCP pool. The administrator issues a show ipv6 | The router is configured for stateless DHCPv6 operation |
| The A flag signifies that additional information is available from a stateless DHCPv6 server | False |
| A DHCP-enabled client PC has just booted. During which steps will the client PC use broadcast messages when communicating with a DHCP server? | DHCPREQUEST |
| A DHCP server responding to the initial request by a client | DHCPOFFER |
| The address pool of a DHCP server is configured with 10.3.2.0/24. The network administrator reserves 3 IP addresses for printers. How many IP addresses are left in the pool to be assigned to other hosts? | 251 |
| When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast? | The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers. |
| Which command will allow a network administrator to check the IP address that is assigned to a particular MAC address? | Router# show ip dhcp pool |
| By default, IPv6 addressing is enable in router. | False |
| A company uses the SLAAC method to configure IPv6 addresses for the employee workstations. Which address will a client use as its default gateway? | the link-local address of the router interface that is attached to the network |
| The second step in configuring a stateless DHCPv6 is to enable ipv6 unicast-routing command. | False |
| 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 address dhcp |
| Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server? | DHCPREQUEST |
| A message that is used to identify the explicit server and lease offer to accept. | DHCPRQUEST |
| SLAAC is a service which means there is no server that maintains network address information to know which IPv6 addresses are being used and which ones are available. | True |
| Which kind of message is sent by a DHCP client when its IP address lease has expired? | a DHCPREQUEST unicast message |
| a message that is used to locate any available DHCP server on a network | DHCPDISCOVER |
| The A Flag signifies to use SLAAC to create an IPv6 Global Unicast Address | True |
| The client accepting the IP address provided by the DHCP server | DHCPREQUEST |
| ipconfig/all command can be used in Routers. | False |
| What is the result of a network technician issuing the command ip dhcp excluded-address 10.0.15.1 10.0.15.15 on a Cisco router? | The Cisco router will exclude 15 IP addresses from being leased to DHCP clients. |
| a message that is used to suggest a lease to a client | DHCPOFFER |
| The address pool of a DHCP server is configured with 192.168.234.0/27. The network administrator reserves 22 IP addresses for IP phones. How many IP addresses are left in the pool to be assigned to other hosts? | 8 |
| The M flag signifies to use a stateful DHCPv6 server to obtain an IPv6 Global Unicast Address. | True |
| To verify a Stateless DHCPv6 Client Router receiver other necessary DHPCv6 information, using The show ipv6 dhcp interface-type interface-number command in global configuration mode of the Client Router. | True |
| To verify that the hosts have received IPv6 addressing information, use the ipconfig/all command. Group of answer choices True False | True |
| A company implements the stateless DHCPv6 method for configuring IPv6 addresses on employee workstations. After a workstation receives messages from multiple DHCPv6 servers to indicate their availability for DHCPv6 service, which message does it | DHCPv6 INFORMATION-REQUEST |
| Which set of commands will configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment? | ip dhcp excluded-address 192.168.100.1 192.168.100.10 ip dhcp excluded-address 192.168.101.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.254.0 default-router 192.168.100.1 |
| What is an advantage of configuring a Cisco router as a relay agent? | It can provide relay services for multiple UDP services. |
Created by:
user-2023543