final ccna2v7
What is the effect of entering the switchport mode access configuration command on a switch?
It disables DTP on a non-trunking interface.
What is the effect of entering the shutdown configuration command on a switch?
It disables an unused port.
What is the effect of entering the ip arp inspection vlan 10 configuration command on a switch?
It enables DAI on specific switch interfaces previously configured with DHCP snooping.
What is the effect of entering the switchport port-security configuration command on a switch?
It enables port security globally on the switch.
Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?
It identifies the VLAN number.
Refer to the exhibit. A network administrator is reviewing the configuration of switch S1. Which protocol has been implemented to group multiple physical ports into one logical link?
PAgP
Refer to the exhibit. In addition to static routes directing traffic to networks 10.10.0.0/16 and 10.20.0.0/16, Router HQ is also configured with the following command: ip route 0.0.0.0 0.0.0.0 serial 0/1/1 What is the purpose of this command?
Packets with a destination network that is not 10.10.0.0/16 or is not 10.20.0.0/16 or is not a directly connected network will be forwarded to the Internet.
A network administrator uses the spanning-tree portfast bpduguard default global configuration command to enable BPDU guard on a switch. However, BPDU guard is not activated on all access ports. What is the cause of the issue?
PortFast is not configured on all access ports.
What protocol or technology requires switches to be in server mode or client mode?
VTP
Users on a LAN are unable to get to a company web server but are able to get elsewhere. What should be done or checked?
Verify that the static route to the server is present in the routing table.
On a Cisco 3504 WLC Summary page ( Advanced > Summary ), which tab allows a network administrator to configure a particular WLAN with a WPA2 policy?
WLANs
What method of wireless authentication is dependent on a RADIUS authentication server?
WPA2 Enterprise
Which wireless encryption method is the most secure?
WPA2 with AES
Which three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)
- An autonegotiation failure can result in connectivity issues. -The duplex and speed settings of each switch port can be manually configured. -When the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode.
Which two statements are characteristics of routed ports on a multilayer switch? (Choose two.)
- They are not associated with a particular VLAN. - In a switched network, they are mostly configured between switches at the core and distribution layers.
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)# ip routing -(config)# interface gigabitethernet 1/1(config-if)# no switchport(config-if)# ip address 192.168.1.2 255.255.255.252
What two default wireless router settings can affect network security? (Choose two.)
-A well-known administrator password is set. -The SSID is broadcast.
A technician is troubleshooting a slow WLAN and decides to use the split-the-traffic approach. Which two parameters would have to be configured to do this? (Choose two.)
-Configure the 5 GHz band for streaming multimedia and time sensitive traffic. -Configure the 2.4 GHz band for basic internet traffic that is not time sensitive.
A new switch is to be added to an existing network in a remote office. The network administrator does not want the technicians in the remote office to be able to add new VLANs to the switch, but the switch should receive VLAN updates from the VTP domain. Which two steps must be performed to configure VTP on the new switch to meet these conditions? (Choose two.)
-Configure the new switch as a VTP client. -Configure the existing VTP domain name on the new switch.
Which three steps should be taken before moving a Cisco switch to a new VTP management domain? (Choose three.)
-Configure the switch with the name of the new management domain -Select the correct VTP mode and version. -Reboot the switch.
Refer to the exhibit. A network administrator has added a new subnet to the network and needs hosts on that subnet to receive IPv4 addresses from the DHCPv4 server. What two commands will allow hosts on the new subnet to receive addresses from the DHCP4 server? (Choose two.)
-R1(config-if)# ip helper-address 10.2.0.250 -R1(config)# interface G0/0
Which two types of spanning tree protocols can cause suboptimal traffic flows because they assume only one spanning-tree instance for the entire bridged network? (Choose two.)
-RSTP -STP
What are three techniques for mitigating VLAN attacks? (Choose three.)
-Set the native VLAN to an unused VLAN. -Disable DTP. -Enable trunking manually.
Which two protocols are used to provide server-based AAA authentication? (Choose two.)
-TACACS+ -RADIUS
Refer to the exhibit. Which two conclusions can be drawn from the output? (Choose two.)
-The port channel ID is 2. -The EtherChannel is down.
Refer to the exhibit. The network administrator is configuring the port security feature on switch SWC. The administrator issued the command show port-security interface fa 0/2 to verify the configuration. What can be concluded from the output that is shown? (Choose three.)
-There is no device currently connected to this port. -Security violations will cause this port to shut down immediately. -This port is currently up.
Compared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)
-They use fewer router resources. -They improve network security.
A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.) *
-assigning ports to VLANs - creating VLANs - implementing a routing protocol
Which three pairs of trunking modes will establish a functional trunk link between two Cisco switches? (Choose three.)
-dynamic desirable - dynamic desirable -dynamic desirable - dynamic auto -dynamic desirable - trunk
Which two functions are performed by a WLC when using split media access control (MAC)? (Choose two.)
-frame translation to other protocols -association and re-association of roaming clients
Refer to the exhibit. What is the metric to forward a data packet with the IPv6 destination address 2001:DB8:ACAD:E:240:BFF:FED4:9DD2?
2682112
Which three Wi-Fi standards operate in the 2.4GHz range of frequencies? (Choose three.)
802.11n 802.11b 802.11g
Refer to the exhibit. Router R1 has an OSPF neighbor relationship with the ISP router over the 192.168.0.32 network. The 192.168.0.36 network link should serve as a backup when the OSPF link goes down. The floating static route command ip route 0.0.0.0 0.0.0.0 S0/0/1 100 was issued on R1 and now traffic is using the backup link even when the OSPF link is up and functioning. Which change should be made to the static route command so that traffic will only use the OSPF link when it is up?
Change the administrative distance to 120.
A WLAN engineer deploys a WLC and five wireless APs using the CAPWAP protocol with the DTLS feature to secure the control plane of the network devices. While testing the wireless network, the WLAN engineer notices that data traffic is being exchanged between the WLC and the APs in plain-text and is not being encrypted. What is the most likely reason for this?
Although DTLS is enabled by default to secure the CAPWAP control channel, it is disabled by default for the data channel.
An administrator is trying to remove configurations from a switch. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed?
Because these VLANs are stored in a file that is called vlan.dat that is located in flash memory, this file must be manually deleted.
A network administrator is adding a new WLAN on a Cisco 3500 series WLC. Which tab should the administrator use to create a new VLAN interface to be used for the new WLAN?
CONTROLLER
Refer to the exhibit. R1 was configured with the static route command ip route 209.165.200.224 255.255.255.224 S0/0/0 and consequently users on network 172.16.0.0/16 are unable to reach resources on the Internet. How should this static route be changed to allow user traffic from the LAN to reach the Internet?
Change the destination network and mask to 0.0.0.0 0.0.0.0.
A junior technician was adding a route to a LAN router. A traceroute to a device on the new network revealed a wrong path and unreachable status. What should be done or checked?
Check the configuration of the exit interface on the new static route.
An administrator notices that large numbers of packets are being dropped on one of the branch routers. What should be done or checked?
Check the routing table for a missing static route.
What is a secure configuration option for remote access to a network device?
Configure SSH.
Refer to the exhibit. The network administrator configures both switches as displayed. However, host C is unable to ping host D and host E is unable to ping host F. What action should the administrator take to enable this communication?
Configure either trunk port in the dynamic desirable mode.
A network administrator is using the router-on-a-stick model to configure a switch and a router for inter-VLAN routing. What configuration should be made on the switch port that connects to the router?
Configure the port as an 802.1q trunk port.
A technician is configuring a router for a small company with multiple WLANs and doesn't need the complexity of a dynamic routing protocol. What should be done or checked?
Create static routes to all internal networks and a default route to the internet.
What network attack seeks to create a DoS for clients by preventing them from being able to obtain a DHCP lease?
DHCP starvation
What protocol should be disabled to help mitigate VLAN attacks?
DTP
What protocol or technology uses source IP to destination IP as a load-balancing mechanism?
EtherChannel
How will a router handle static routing differently if Cisco Express Forwarding is disabled?
Ethernet multiaccess interfaces will require fully specified static routes to avoid routing inconsistencies.
What is the IPv6 prefix that is used for link-local addresses?
FE80::/10
Which statement is correct about how a Layer 2 switch determines how to forward frames?
Frame forwarding decisions are based on MAC address and port mappings in the CAM table.
What protocol or technology uses a standby router to assume packet-forwarding responsibility if the active router fails?
HSRP
What action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?
It sends a DHCPREQUEST that identifies which lease offer the client is accepting.
Why is DHCP snooping required when using the Dynamic ARP Inspection feature?
It uses the MAC-address-to-IP-address binding database to validate an ARP packet.
A network administrator is preparing the implementation of Rapid PVST+ on a production network. How are the Rapid PVST+ link types determined on the switch interfaces?
Link types are determined automatically.
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 cybersecurity analyst is using the macof tool to evaluate configurations of switches deployed in the backbone network of an organization. Which type of LAN attack is the analyst targeting during this evaluation?
MAC address table overflow
Refer to the exhibit. What can be concluded about the configuration shown on R1?
R1 is configured as a DHCPv4 relay agent.
Which command will create a static route on R2 in order to reach PC B?
R2(config)# ip route 172.16.2.0 255.255.255.0 172.16.3.1
Refer to the exhibit. After attempting to enter the configuration that is shown in router RTA, an administrator receives an error and users on VLAN 20 report that they are unable to reach users on VLAN 30. What is causing the problem?
RTA is using the same subnet for VLAN 20 and VLAN 30.
Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?
SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch.
A static route has been configured on a router. However, the destination network no longer exists. What should an administrator do to remove the static route from the routing table?
Remove the route using the no ip route command.
Refer to the exhibit. Which route was configured as a static route to a specific network using the next-hop address?
S 10.17.2.0/24 [1/0] via 10.16.2.2
Which method of IPv6 prefix assignment relies on the prefix contained in RA messages?
SLAAC
What protocol or technology allows data to transmit over redundant switch links?
STP
What protocol or technology disables redundant paths to eliminate Layer 2 loops?
STP
Refer to the exhibit. A network administrator has connected two switches together using EtherChannel technology. If STP is running, what will be the end result?
STP will block one of the redundant links.
Refer to the exhibit. Host A has sent a packet to host B. What will be the source MAC and IP addresses on the packet when it arrives at host B?
Source MAC: 00E0.FE91.7799Source IP: 10.1.1.10
A network engineer is troubleshooting a newly deployed wireless network that is using the latest 802.11 standards. When users access high bandwidth services such as streaming video, the wireless network performance is poor. To improve performance the network engineer decides to configure a 5 Ghz frequency band SSID and train users to use that SSID for streaming media services. Why might this solution improve the wireless network performance for that type of service?
The 5 GHz band has more channels and is less crowded than the 2.4 GHz band, which makes it more suited to streaming multimedia.
Refer to the exhibit. If the IP addresses of the default gateway router and the DNS server are correct, what is the configuration problem?
The IP address of the default gateway router is not contained in the excluded address list.
Which statement describes a result after multiple Cisco LAN switches are interconnected?
The broadcast domain expands to all switches.
After a host has generated an IPv6 address by using the DHCPv6 or SLAAC process, how does the host verify that the address is unique and therefore usable?
The host sends an ICMPv6 neighbor solicitation message to the DHCP or SLAAC-learned address and if no neighbor advertisement is returned, the address is considered unique.
Refer to the exhibit. An administrator is attempting to install an IPv6 static route on router R1 to reach the network attached to router R2. After the static route command is entered, connectivity to the network is still failing. What error has been made in the static route configuration?
The interface is incorrect.
Refer to the exhibit. R1 has been configured as shown. However, PC1 is not able to receive an IPv4 address. What is the problem?
The ip helper-address command was applied on the wrong interface.
Successful inter-VLAN routing has been operating on a network with multiple VLANs across multiple switches for some time. When an inter-switch trunk link fails and Spanning Tree Protocol brings up a backup trunk link, it is reported that hosts on two VLANs can access some, but not all the network resources that could be accessed previously. Hosts on all other VLANS do not have this problem. What is the most likely cause of this problem?
The protected edge port function on the backup trunk interfaces has been disabled.
To obtain an overview of the spanning tree status of a switched network, a network engineer issues the show spanning-tree command on a switch. Which two items of information will this command display? (Choose two.)
The root bridge BID The role of the ports in all VLANs.
What action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?
The switch adds the MAC address and incoming port number to the table.
What action takes place when a frame entering a switch has a unicast destination MAC address appearing in the MAC address table?
The switch forwards the frame out of the specified port.
What action takes place when the source MAC address of a frame entering a switch appears in the MAC address table associated with a different port?
The switch replaces the old entry and uses the more current port.
What action takes place when a frame entering a switch has a unicast destination MAC address that is not in the MAC address table?
The switch will forward the frame out all ports except the incoming port.
Refer to the exhibit. Which trunk link will not forward any traffic after the root bridge election process is complete?
Trunk2
Employees are unable to connect to servers on one of the internal networks. What should be done or checked?
Use the "show ip interface brief" command to see if an interface is down.
What is a drawback of the local database method of securing device access that can be solved by using AAA with centralized servers?
User accounts must be configured locally on each device, which is an unscalable authentication solution.
A network administrator of a small advertising company is configuring WLAN security by using the WPA2 PSK method. Which credential do office users need in order to connect their laptops to the WLAN?
a user passphrase
On what switch ports should BPDU guard be enabled to enhance STP stability?
all PortFast-enabled ports
Refer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network?
alternate, designated, root, root
Refer to the exhibit. Based on the exhibited configuration and output, why is VLAN 99 missing?
because VLAN 99 has not yet been created
A company is deploying a wireless network in the distribution facility in a Boston suburb. The warehouse is quite large and it requires multiple access points to be used. Because some of the company devices still operate at 2.4GHz, the network administrator decides to deploy the 802.11g standard. Which channel assignments on the multiple access points will make sure that the wireless channels are not overlapping?
channels 1, 6, and 11
Select the three PAgP channel establishment modes. (Choose three.)
desirable on auto
A technician is configuring a wireless network for a small business using a SOHO wireless router. Which two authentication methods are used, if the router is configured with WPA2? (Choose two.) **
enterprise personal
Refer to the exhibit. All the displayed switches are Cisco 2960 switches with the same default priority and operating at the same bandwidth. Which three ports will be STP designated ports? (Choose three.)
fa0/21 fa0/10 fa0/13
Which type of static route is configured with a greater administrative distance to provide a backup route to a route learned from a dynamic routing protocol?
floating static route
Refer to the exhibit. What will router R1 do with a packet that has a destination IPv6 address of 2001:db8:cafe:5::1?
forward the packet out Serial0/0/0
Refer to the exhibit. Which three hosts will receive ARP requests from host A, assuming that port Fa0/4 on both switches is configured to carry traffic for multiple VLANs? (Choose three.)
host C host D host F
During the AAA process, when will authorization be implemented?
immediately after successful authentication against an AAA data source
What else is required when configuring an IPv6 static route using a next-hop link-local address? **
interface number and type
Which command will start the process to bundle two physical interfaces to create an EtherChannel group via LACP?
interface range GigabitEthernet 0/4 - 5
What is a method to launch a VLAN hopping attack?
introducing a rogue switch and enabling trunking
Which option shows a correctly configured IPv4 default static route?
ip route 0.0.0.0 0.0.0.0 S0/0/0
Refer to the exhibit. Currently router R1 uses an EIGRP route learned from Branch2 to reach the 10.10.0.0/16 network. Which floating static route would create a backup route to the 10.10.0.0/16 network in the event that the link between R1 and Branch2 goes down?
ip route 10.10.0.0 255.255.0.0 209.165.200.225 100
Refer to the exhibit. Which static route would an IT technician enter to create a backup route to the 172.16.1.0 network that is only used if the primary RIP learned route fails?
ip route 172.16.1.0 255.255.255.0 s0/0/0 121
Refer to the exhibit. Which statement shown in the output allows router R1 to respond to stateless DHCPv6 requests?
ipv6 nd other-config-flag
Refer to the exhibit. Which static route command can be entered on R1 to forward traffic to the LAN connected to R2?
ipv6 route 2001:db8:12:10::/64 S0/0/1 fe80::2
Refer to the exhibit. A network engineer is configuring IPv6 routing on the network. Which command issued on router HQ will configure a default route to the Internet to forward packets to an IPv6 destination network that is not listed in the routing table?
ipv6 route ::/0 serial 0/1/1
A PC has sent an RS message to an IPv6 router attached to the same network. Which two pieces of information will the router send to the client? (Choose two.)
prefix length prefix
A network administrator configures the port security feature on a switch. The security policy specifies that each access port should allow up to two MAC addresses. When the maximum number of MAC addresses is reached, a frame with the unknown source MAC address is dropped and a notification is sent to the syslog server. Which security violation mode should be configured for each access port?
restrict
Which network attack is mitigated by enabling BPDU guard?
rogue switches on a network
What would be the primary reason an attacker would launch a MAC address overflow attack?
so that the attacker can see frames that are destined for other hosts
Refer to the exhibit. A network administrator is configuring the router R1 for IPv6 address assignment. Based on the partial configuration, which IPv6 global unicast address assignment scheme does the administrator intend to implement?
stateful
A company security policy requires that all MAC addressing be dynamically learned and added to both the MAC address table and the running configuration on each switch. Which port security configuration will accomplish this?
sticky secure MAC addresses
Which information does a switch use to populate the MAC address table?
the source MAC address and the incoming port
Refer to the exhibit. A network administrator configured routers R1 and R2 as part of HSRP group 1. After the routers have been reloaded, a user on Host1 complained of lack of connectivity to the Internet The network administrator issued the show standby brief command on both routers to verify the HSRP operations. In addition, the administrator observed the ARP table on Host1. Which entry should be seen in the ARP table on Host1 in order to gain connectivity to the Internet?
the virtual IP address and the virtual MAC address for the HSRP group 1
Refer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?
to Fa0/1, Fa0/2, and Fa0/3 only
A network administrator is configuring a WLAN. Why would the administrator disable the broadcast feature for the SSID?
to eliminate outsiders scanning for available SSIDs in the area
What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
to isolate traffic between segments to enhance user bandwidth
Which two VTP modes allow for the creation, modification, and deletion of VLANs on the local switch? (Choose two.)
transparent server
What is the common term given to SNMP log messages that are generated by network devices and sent to the SNMP server?
traps
A network administrator is configuring a new Cisco switch for remote management access. Which three items must be configured on the switch for the task? (Choose three.)
vty lines default gateway IP address
In which situation would a technician use the show interfaces switch command?
when packets are being dropped from a particular directly attached host
After attaching four PCs to the switch ports, configuring the SSID and setting authentication properties for a small office network, a technician successfully tests the connectivity of all PCs that are connected to the switch and WLAN. A firewall is then configured on the device prior to connecting it to the Internet. What type of network device includes all of the described features?
wireless router