Switching, Routing and Wireless
Essentials CCNA 2 v7.0 Final
Refer to the exhibit. A network administrator configured routers R1 an 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? - ANSWER-The virtual IP
address and the virtual MAC address for the HSRP group 1
Match the forwarding characteristic to its type - ANSWER-Cut-through:
-Appropriate for high performance computing applications
-Forwarding process can begin after receiving the destination address
-May forward invalid frames
Store-and-forward:
-Error checking before forwarding
-Forwarding process only begins after receiving the entire frame
-Only forwards valid frames
Which statement is correct about how a Layer 2 switch determines how to forward
frames? - ANSWER-Frame forwarding decisions are based on MAC address and port
mappings in the CAM table
Which statement describes a result after multiple Cisco LAN switches are
interconnected? - ANSWER-The broadcast domain expands to all switches
Match the link state to the interface and protocol status - ANSWER-Disabled-
Administratively down
Layer 1 problem- down/down
Layer 2 problem- up/down
Operational- up/up
Match the step to each switch boot process description. - ANSWER-Step 1- Execute
POST
Step 2- Load the boot loader from the ROM
Step 3- CPU register initializations
Step 4- Flash the file system initialization
Step 5- Load the IOS
Step 6- Transfer switch control to the IOS
Refer to the exhibit. What will router R1 do with a packet that has a destination IPv6
address of 2001:db8:cafe:5::1? - ANSWER-Forward the packet out Serial 0/0/0
,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? - ANSWER-ip route 10.10.0.0 255.255.0.0 209.165.200.225 100
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 the network
172.16.0.0/16 are unable to reach resources on the Internet. How should this static
router be changed to allow user traffic from the LAN to reach the Internet? - ANSWER-
Change the destination network and mask to 0.0.0.0 0.0.0.0
Which option shows a correctly configured IPv4 default static route? - ANSWER-ip route
0.0.0.0 0.0.0.0 s0/0/0
Refer to the exhibit. Which static route command can be entered on R1 to forward traffic
to the LAN connected to R2? - ANSWER-ipv6 route 2001:db8:12:10::/64 s0/0/1 fe80::2
What is a method to launch a VLAN hopping attack? - ANSWER-Introducing a rouge
switch and enabling trunking
A cybersecurity analyst is using the macof tool to evaluate configurations of switches
deployed in the backbone network for an organization. Which type of LAN attack is the
analyst targeting during the evaluation? - ANSWER-MAC address table overflow
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 the number of active clients is 0? -
ANSWER-The state is not maintained by the DHCPv6 server under stateless DHCPv6
operation
Refer to the exhibit. How is a frame sent from PC-A forward to PC-C if the MAC address
table on switch SW1 is empty? - ANSWER-SW floods the frame on all the ports on
SW1, excluding the port through which the frame entered the switch
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 that
VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed? -
ANSWER-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
Match the description to the correct VLAN type. - ANSWER-Default VLAN- All
switchports are assigned to this VLAN after initial bootup of the switch
Management VLAN- An IP address and subnet mask are assigned to this VLAN,
allowing the switch to be accessed by HTTP, Telnet, SSH, or SNMP
Data VLAN- Configured to carry user generated traffic
Native VLAN- Carries untagged traffic
, 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? - ANSWER-
STP will block one of the redundant links
What is a secure configuration option for remote access to a network device? -
ANSWER-Configure SSH
Which wireless encryption method is the most secure? - ANSWER-WPA2 with AES
After attaching 4 PCs to the switchports, configuring the SSID, and setting
authentication properties for a small office network, a technician successfully tests
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? - ANSWER-Wireless router
Refer to the exhibit. Host A has sent a packet to Host B. What will be the source MAC
and IP address on the packet when it arrives at Host B? - ANSWER-Source MAC:
00E0.FE91.7799 (last router before destination)
Source IP: 10.1.1.10 (original host IP)
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? -
ANSWER-ip route 172.16.1.0 255.255.255.0 s0/0/0 121
Refer to the exhibit. In addition to static routes directing traffic to the 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? - ANSWER-Packets with a destination network
that is not 10.10.0.0/16 or 10.20.0.0/16 or is not a directly connected network will be
forwarded to the Internet
What protocol or technology disables redundant paths to eliminate Layer 2 loops? -
ANSWER-STP
Refer to the exhibit. Based on the exhibited configuration and output, why is VLAN99
missing? - ANSWER-Because VLAN99 has not yet been created
Which two VTP modes allow for the creation, modification, and deletion of VLANs on
the local switch? - ANSWER--Server
-Transparent
Which three steps should be taken before moving a Cisco switch to a new VTP
management domain? - ANSWER--Configure the switch with the name of the new
management domain
-Select the correct VTP mode and version
Essentials CCNA 2 v7.0 Final
Refer to the exhibit. A network administrator configured routers R1 an 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? - ANSWER-The virtual IP
address and the virtual MAC address for the HSRP group 1
Match the forwarding characteristic to its type - ANSWER-Cut-through:
-Appropriate for high performance computing applications
-Forwarding process can begin after receiving the destination address
-May forward invalid frames
Store-and-forward:
-Error checking before forwarding
-Forwarding process only begins after receiving the entire frame
-Only forwards valid frames
Which statement is correct about how a Layer 2 switch determines how to forward
frames? - ANSWER-Frame forwarding decisions are based on MAC address and port
mappings in the CAM table
Which statement describes a result after multiple Cisco LAN switches are
interconnected? - ANSWER-The broadcast domain expands to all switches
Match the link state to the interface and protocol status - ANSWER-Disabled-
Administratively down
Layer 1 problem- down/down
Layer 2 problem- up/down
Operational- up/up
Match the step to each switch boot process description. - ANSWER-Step 1- Execute
POST
Step 2- Load the boot loader from the ROM
Step 3- CPU register initializations
Step 4- Flash the file system initialization
Step 5- Load the IOS
Step 6- Transfer switch control to the IOS
Refer to the exhibit. What will router R1 do with a packet that has a destination IPv6
address of 2001:db8:cafe:5::1? - ANSWER-Forward the packet out Serial 0/0/0
,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? - ANSWER-ip route 10.10.0.0 255.255.0.0 209.165.200.225 100
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 the network
172.16.0.0/16 are unable to reach resources on the Internet. How should this static
router be changed to allow user traffic from the LAN to reach the Internet? - ANSWER-
Change the destination network and mask to 0.0.0.0 0.0.0.0
Which option shows a correctly configured IPv4 default static route? - ANSWER-ip route
0.0.0.0 0.0.0.0 s0/0/0
Refer to the exhibit. Which static route command can be entered on R1 to forward traffic
to the LAN connected to R2? - ANSWER-ipv6 route 2001:db8:12:10::/64 s0/0/1 fe80::2
What is a method to launch a VLAN hopping attack? - ANSWER-Introducing a rouge
switch and enabling trunking
A cybersecurity analyst is using the macof tool to evaluate configurations of switches
deployed in the backbone network for an organization. Which type of LAN attack is the
analyst targeting during the evaluation? - ANSWER-MAC address table overflow
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 the number of active clients is 0? -
ANSWER-The state is not maintained by the DHCPv6 server under stateless DHCPv6
operation
Refer to the exhibit. How is a frame sent from PC-A forward to PC-C if the MAC address
table on switch SW1 is empty? - ANSWER-SW floods the frame on all the ports on
SW1, excluding the port through which the frame entered the switch
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 that
VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed? -
ANSWER-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
Match the description to the correct VLAN type. - ANSWER-Default VLAN- All
switchports are assigned to this VLAN after initial bootup of the switch
Management VLAN- An IP address and subnet mask are assigned to this VLAN,
allowing the switch to be accessed by HTTP, Telnet, SSH, or SNMP
Data VLAN- Configured to carry user generated traffic
Native VLAN- Carries untagged traffic
, 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? - ANSWER-
STP will block one of the redundant links
What is a secure configuration option for remote access to a network device? -
ANSWER-Configure SSH
Which wireless encryption method is the most secure? - ANSWER-WPA2 with AES
After attaching 4 PCs to the switchports, configuring the SSID, and setting
authentication properties for a small office network, a technician successfully tests
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? - ANSWER-Wireless router
Refer to the exhibit. Host A has sent a packet to Host B. What will be the source MAC
and IP address on the packet when it arrives at Host B? - ANSWER-Source MAC:
00E0.FE91.7799 (last router before destination)
Source IP: 10.1.1.10 (original host IP)
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? -
ANSWER-ip route 172.16.1.0 255.255.255.0 s0/0/0 121
Refer to the exhibit. In addition to static routes directing traffic to the 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? - ANSWER-Packets with a destination network
that is not 10.10.0.0/16 or 10.20.0.0/16 or is not a directly connected network will be
forwarded to the Internet
What protocol or technology disables redundant paths to eliminate Layer 2 loops? -
ANSWER-STP
Refer to the exhibit. Based on the exhibited configuration and output, why is VLAN99
missing? - ANSWER-Because VLAN99 has not yet been created
Which two VTP modes allow for the creation, modification, and deletion of VLANs on
the local switch? - ANSWER--Server
-Transparent
Which three steps should be taken before moving a Cisco switch to a new VTP
management domain? - ANSWER--Configure the switch with the name of the new
management domain
-Select the correct VTP mode and version
