Ccna 2 final
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.
Which three Wi-Fi standards operate in the 2.4GHZ range of frequencies? (Choose three.)
1.) 802.11b 2.) 802.11g 3.) 802.11n
Which three steps should be taken before moving a Cisco switch to a new VTP management domain? (Choose three.)
1.) Configure the switch with the name of the new management domain. 2.) Reset server in the new domain. · Select the correct VTP mode and version. 3.) Reboot the switch.
What are three techniques for mitigating VLAN attacks? (Choose three.)
1.) Enable trunking manually 2.) Disable DTP 3.) Set the native VLAN to an unused VLAN.
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.)
1.) IP address 2.) vty lines 3.) default gateway
Which two statements are characteristics of routed ports on a multilayer switch? (Choose two.)
1.) In a switched network, they are mostly configured between switches at the core and distribution layers. point-to-multipoint links. 2.) They are not associated with a particular VLAN.
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.
1.) R1(config)# interface G0/0 2.) R1(config-if)# ip helper-address 10.2.0.250
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.)
1.) R1(config-if)# ip helper-address 10.2.0.250 2.) R1(config)# interface GO/0
Which two protocols are used to provide server-based AAA authentication? (Choose two.)
1.) TACACS+ 2.) RADIUS
A network administrator has configured a router for stateless DHCPV6 operation. However, users report that workstations are not receiving DNS server information. Which two router configuration lines should be verified to ensure that stateless DHCPV6 service is properly configured? (Choose two.)
1.) The dns-server line is included in the ipv6 dhcp pool section. 2.) The ipv6 nd other-config-flag is entered for the interface that faces the LAN segment.
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.)
1.) The root bridge BID 2.) The role of the ports in all VLANS.
Compared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)
1.) They improve network security. 2.) They use fewer router resources.
Match the forwarding characteristic to its type. (Not all options are used.)
1.) appropriate for high performance computing cut-through 2.) applications forwarding process can begin after receiving the destination address 3.) may forward invalid frames
Select the three PAGP channel establishment modes. (Choose three.)
1.) auto 2.) desirable 2.) on
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.)
1.) creating VLANS 2.) assigning ports to VLANS 3.) creating SVI interfaces
Which three pairs of trunking modes will establish a functional trunk link between two Cisco switches? (Choose three.)
1.) dynamic desirable - dynamic desirable 2.) dynamic desirable - trunk 3.) dynamic desirable - dynamic auto
Match the forwarding characteristic to its type. (Not all options are used.) store-and-forward
1.) error checking before forwarding 2.) forwarding process only begins after receiving the entire frame 3.) only forwards valid frames
Which three components are combined form a bridge ID?
1.) extended system ID 2.) bridge priority 3.) MAC address
What are two switch characteristics that could help alleviate network congestion? (Choose two.)
1.) fast internal switching 2.) large frame buffers
Which two functions are performed by a WLC when using split media access control (MAC)? (Choose two.)
1.) frame translation to other protocols 2.) association and re-association of roaming clients
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.)
1.) prefix length 2.) prefix
What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
1.) to enhance user bandwidth 2.) to isolate traffic between segments
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 for this?
Although DTLS is enabled by default to secure the CAPWAP control channel, it is disabled by default for the data channel.
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. 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 S/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 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.
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 or technology manages trunk negotiations between switches?
DTP
What protocol should be disabled to help mitigate VLAN attacks?
DTP
Which Cisco solution helps prevent ARP spoofing and ARP poisoning attacks?
Dynamic ARP Inspection
What mitigation plan is best for thwarting a DoS attack that is creating a MAC address table overflow?
Enable port security.
company has just switched to a new ISP. The ISP has completed and checked the connection from its site to the company. However, employees at the company are not able to access the internet. What should be done or checked?
Ensure that the old default route has been removed from the company edge routers.
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 protocol or technology uses a standby router to assume packet- forwarding responsibility if the active router fails?
HSRP
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 switchport port-security configuration command on a switch?
It enables port security on an interface
What is the effect of entering the spanning-tree portfast configuration command on a switch?
It enables portfast on a specific switch interface.
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.
What is an advantage of PVST+?
PVST+ optimizes performance on the network through load sharing.
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 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 wi 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.
Refer to the exhibit. What can be concluded about the configuration shown on R1?
R1 is configured as a DHCPV4 relay agent.
The exhibit shows two PCs called PC A and PC B, two routes called R1 and R2, and two switches. PC A has the address 172.16.1.1/24 and is connected to a switch and into an interface on R1 that has the IP address 172.16.1.254. PC B has the address 172.16.2.1/24 and is connected to a switch that is connected to another interface on R1 with the IP address 172.16.2.254. The serial interface on R1 has the address 172.16.3.1 and is connected to the serial interface on R2 that has the address 172.16.3.2/24. R2 is connected to the internet cloud. 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.
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.FE91.7799 Source IP: 10.1.1.10
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.
A network administrator has found a user sending a double-tagged 802.1Q frame to a switch. What is the best solution to prevent this type of attack?
The VLANS for user access ports should be different VLANS than any native VLANS used on trunk ports.
Refer to the exhibit. A network administrator configures R1 for inter-VLAN routing between VLAN 10 and VLAN 20. However, the devices in VLAN 10 and VLAN 20 cannot communicate. Based on the configuration in the exhibit, what is a possible cause for the problem?
The command interface gigabitEthernet 0/0.1 is wrong.
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.
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 MẠC 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 the source MAC address of a frame entering a switch is in the MAC address table?
The switch updates the refresh timer for the entry.
What action takes place when a frame entering a switch has a multicast destination MAC address?
The switch will forward the frame out all ports except the incoming 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
Branch users were able to access a site in the morning but have had no connectivity with the site since lunch time. What should be done or checked?
Use the "show ip interface brief" command to see if an interface is down.
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 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
On what switch ports should BPDU guard be enabled to enhance STP stability?
all PortFast-enabled ports
Match the description to the correct VLAN type. (Not all options are used.) default VLAN
all switch ports are assigned to this VLAN after initial bootup of the switch
Match the description to the correct VLAN type. (Not all options are used.) native VLAN
carries untagged traffic
Match the description to the correct VLAN type. (Not all options are used.) data VLANS
configured to carry user generated traffic
Which mitigation technique would prevent rogue servers from providing false IPV6 configuration parameters to clients?
enabling DHCPV6 Guard
What IPV6 prefix is designed for link- local communication?
fe80::/10
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
What else is required when configuring an IPV6 static route using a next-hop link- local address?
interface number and type
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
5. 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 SO/0/1 fe80::2
Match the description to the correct VLAN type. (Not all options are used.) management VLAN
only accessible by the network administrator
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
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
A network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPV4 addresses on an AP?
to reduce outsiders intercepting data or accessing the wireless network by using well-known address range
A network administrator is configuring a WLAN. Why would the administrator use RADIUS servers on the network?
to restrict access to the WLAN by authorized, authenticated users only
What is the common term given to SNMP log messages that are generated by network devices and sent to the SNMP server?
traps
Which mitigation technique would prevent rogue servers from providing false IP configuration parameters to clients?
turning on DHCP snooping
In which situation would a technician use the show interfaces switch command?
when packets are being dropped from a particular directly attached host
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
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 whic' the frame entered the switch.
7. 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