Final Exam Flashcards
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?
R1(config)# ipv6 unicast-routing
R1(config)# ipv6 dhcp pool ACAD_CLASS
R1(config-dhcp)# dns-server 2001:db8:acad:a1::10
R1(config-dhcp)# domain-name netacad.net
R1(config-dhcp)# exit
R1(config)# interface gigabitEthernet 0/0
R1(config-if)# ipv6 address 2001:db8:acad:1::1/64
R1(config-if)# ipv6 dhcp server ACAD_CLASS
R1(config-if)# ipv6 nd other-config-flag
R1(config-if)# end
R1#
R1# show ipv6 dhcp pool
DHCPv6 pool: ACAD_CLASS
DNS server: 2001:DB8:ACAD:A1::10
Domain name: netacad.net
Active clients: 0
The default gateway address is not provided in the pool. No clients have communicated with the DHCPv6 server yet. The IPv6 DHCP pool configuration has no IPv6 address range specified. The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.
The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.
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?
standard static route floating static route default static route summary static route
floating static route
Refer to the exhibit. A network engineer is examining a configuration implemented by a new intern who attached an IP phone to a switch port and configured the switch. Identify the issue, if any, with the configuration.
SW3(config-vlan)#vlan 2222 SW3(config-vlan)# name voice SW3(config-vlan)# int fa0/20 SW3(config-if)# switchportmode access SW3(config-if)#mls qos Crust cos SW3(config-if)#switchport access vlan 2222 SW3(config-i0# end
The voice VLAN should be 150. The configuration is correct. There must be a data VLAN added. The spanning-tree BPDU guard feature is missing. The switch port is not configured as a trunk.
The configuration is correct.
Refer to the exhibit. Assuming that the routing tables are up to date and no ARP messages are needed, after a packet leaves H1, how many times is the L2 header rewritten in the path to H2?
H1 --> switch --> router1 --.> router2 --> switch --> H2
1
2
3
4
5
6`
2
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/O] via 10.16.2.2
S 0.0.0.0/0 [1/0] via 10.16.2.2
C 10.16.2..0/24 is directly connected, Serial/0/0/0
S 10.17.2.0/24 is directly connected. Serial 0/0/0
C 172.16.2.0/24 is directly connected, Serial0/0/0 S 192.168.2.0/24 [1/0] via 172.16.2.2 S 192.168.2.0/24 is directly connected, Serial 0/0/0 S 0.0.0.0/0 [1/0] via 172.16.2.2
S 192.168.2.0/24 [1/0] via 172.16.2.2
What network prefix and prefix-length combination is used to create a default static route that will match any IPv6 destination?
::/128 ::/0 ::1/64 FFFF::/128
::/0
A router has used the OSPF protocol to learn a route to the 172.16.32.0/19 network. Which command will implement a backup floating static route to this network?
ip route 172.16.0.0 255.255.240.0 S0/0/0 200 ip route 172.16.32.0 255.255.224.0 S0/0/0 200 ip route 172.16.0.0 255.255.224.0 S0/0/0 100 ip route 172.16.32.0 255.255.0.0 S0/0/0 100
ip route 172.16.32.0 255.255.224.0 S0/0/0 200
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?
router 1 –> branch 1 –>
branch2
ip route 10.10.0.0 255.255.0.0 Serial 0/0/0 100 ip route 10.10.0.0 255.255.0.0 209.165.200.226 100 ip route 10.10.0.0 255.255.0.0 209.165.200.225 100 ip route 10.10.0.0 255.255.0.0 209.165.200.225 50
ip route 10.10.0.0 255.255.0.0 209.165.200.225 100
Which statement describes a route that has been learned dynamically?
It is automatically updated and maintained by routing protocols. It is unaffected by changes in the topology of the network. It has an administrative distance of 1. It is identified by the prefix C in the routing table.
It is automatically updated and maintained by routing protocols.
Compared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)
They improve network security. They use fewer router resources. They improve the efficiency of discovering neighboring networks. They take less time to converge when the network topology changes. They automatically switch the path to the destination network when the topology changes.
They improve network security.
They use fewer router resources.
A network administrator adds the default-information originate command to the configuration of a router that uses RIP as the routing protocol. What will result from adding this command?
The router will be reset to the default factory information. The router will not forward routing information that is learned from other routers. The router will propagate a static default route in its RIP updates, if one is present. The router will only forward packets that originate on directly connected networks.
The router will propagate a static default route in its RIP updates, if one is present.
Refer to the exhibit. What is the administrative distance value that indicates the route for R2 to reach the 10.10.0.0/16 network?
1 0 90 20512256
1
A network administrator reviews the routing table on the router and sees a route to the destination network 172.16.64.0/18 with a next-hop IP address of 192.168.1.1. What are two descriptions of this route? (Choose two.)
default route
supernet route
ultimate route
parent route
level 2 child route
ultimate route
level 2 child route
Which two factors are important when deciding which interior gateway routing protocol to use? (Choose two.)
scalability
ISP selection
speed of convergence
the autonomous system that is used
campus backbone architecture
scalability
speed of convergence
Employees of a company connect their wireless laptop computers to the enterprise LAN via wireless access points that are cabled to the Ethernet ports of switches. At which layer of the three-layer hierarchical network design model do these switches operate?
distribution
data link
physical
access
core
access
What is a characteristic of the distribution layer in the three layer hierarchical model?
acts as the backbone for the network, aggregating and distributing network traffic throughout the campus provides access to the rest of the network through switching, routing, and network access policies distributes access to end users represents the network edge
provides access to the rest of the network through switching, routing, and network access policies
Which information does a switch use to populate the MAC address table?
the destination MAC address and the incoming port the destination MAC address and the outgoing port the source and destination MAC addresses and the incoming port the source and destination MAC addresses and the outgoing port the source MAC address and the incoming port the source MAC address and the outgoing port
the source MAC address and the incoming port
Which statement is correct about Ethernet switch frame forwarding decisions?
Frame forwarding decisions are based on MAC address and port mappings in the CAM table. Cut-through frame forwarding ensures that invalid frames are always dropped. Only frames with a broadcast destination address are forwarded out all active switch ports. Unicast frames are always forwarded regardless of the destination MAC address.
Frame forwarding decisions are based on MAC address and port mappings in the CAM table.
Which switching method drops frames that fail the FCS check?
borderless switching cut-through switching ingress port buffering store-and-forward switching
store-and-forward switching
In what situation would a Layer 2 switch have an IP address configured?
when the Layer 2 switch needs to forward user traffic to another device when the Layer 2 switch is the default gateway of user traffic when the Layer 2 switch needs to be remotely managed when the Layer 2 switch is using a routed port
when the Layer 2 switch needs to be remotely managed
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.)
IP address
VTP domain
vty lines
default VLAN
default gateway
loopback address
IP address
vty lines
default gateway
A network technician has been asked to secure all switches in the campus network. The security requirements are for each switch to automatically learn and add MAC addresses to both the address table and the running configuration. Which port security configuration will meet these requirements?
auto secure MAC addresses dynamic secure MAC addresses static secure MAC addresses sticky secure MAC addresses
sticky secure MAC addresses
A network administrator is configuring port security on a Cisco switch. When a violation occurs, which violation mode that is configured on an interface will cause packets with an unknown source address to be dropped with no notification sent?
off restrict protect shutdown
protect
Two employees in the Sales department work different shifts with their laptop computers and share the same Ethernet port in the office. Which set of commands would allow only these two laptops to use the Ethernet port and create violation log entry without shutting down the port if a violation occurs?
switchport mode access switchport port-security switchport mode access switchport port-security switchport port-security maximum 2 switchport port-security mac-address sticky switchport port-security violation restrict switchport mode access switchport port-security maximum 2 switchport port-security mac-address sticky switchport mode access switchport port-security maximum 2 switchport port-security mac-address sticky switchport port-security violation protect
switchport mode access
switchport port-security
switchport port-security maximum 2
switchport port-security mac-address sticky
switchport port-security violation restrict
Refer to the exhibit. What protocol should be configured on SW-A Port 0/1 if it is to send traffic from multiple VLANs to switch SW-B?
Spanning Tree
RIP v2
IEEE 802.1Q
ARP
Rapid Spanning Tree
IEEE 802.1Q
A Cisco Catalyst switch has been added to support the use of multiple VLANs as part of an enterprise network. The network technician finds it necessary to clear all VLAN information from the switch in order to incorporate a new network design. What should the technician do to accomplish this task?
Erase the startup configuration and reboot the switch. Erase the running configuration and reboot the switch. Delete the startup configuration and the vlan.dat file in the flash memory of the switch and reboot the switch. Delete the IP address that is assigned to the management VLAN and reboot the switch.
Delete the startup configuration and the vlan.dat file in the flash memory of the switch and reboot the switch.
What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?
All VLANs will be allowed across the trunk. Only VLAN 1 will be allowed across the trunk. Only the native VLAN will be allowed across the trunk. The switches will negotiate via VTP which VLANs to allow across the trunk.
All VLANs will be allowed across the trunk.
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 subinterface. It identifies the VLAN number. It identifies the native VLAN number. It identifies the type of encapsulation that is used. It identifies the number of hosts that are allowed on the interface.
It identifies the VLAN number.
A network administrator is designing an ACL. The networks 192.168.1.0/25, 192.168.0.0/25, 192.168.0.128/25, 192.168.1.128/26, and 192.168.1.192/26 are affected by the ACL. Which wildcard mask, if any, is the most efficient to use when specifying all of these networks in a single ACL permit entry?
0.0.0.127 0.0.0.255 0.0.1.255 0.0.255.255 A single ACL command and wildcard mask should not be used to specify these particular networks or other traffic will be permitted or denied and present a security risk.
0.0.1.255
The computers used by the network administrators for a school are on the 10.7.0.0/27 network. Which two commands are needed at a minimum to apply an ACL that will ensure that only devices that are used by the network administrators will be allowed Telnet access to the routers? (Choose two.)
access-class 5 in
access-list 5 deny any
access-list standard VTY
permit 10.7.0.0 0.0.0.127
access-list 5 permit 10.7.0.0 0.0.0.31
ip access-group 5 out
ip access-group 5 in
access-class 5 in
access-list 5 permit 10.7.0.0 0.0.0.31A network engineer has created a standard ACL to control SSH access to a router. Which command will apply the ACL to the VTY lines?
access-group 11 in access-class 11 in access-list 11 in access-list 110 in
access-class 11 in
What is the reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?
to notify other DHCP servers on the subnet that the IP address was leased to notify other hosts not to request the same IP address for hosts on other subnets to receive the information for routers to fill their routing tables with this new information
to notify other DHCP servers on the subnet that the IP address was leased
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 192.168.100.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.255.0 ip default-gateway 192.168.100.1 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 dhcp pool LAN-POOL-100 ip dhcp excluded-address 192.168.100.1 192.168.100.9 ip dhcp excluded-address 192.168.100.254 network 192.168.100.0 255.255.254.0 default-router 192.168.101.1 ip dhcp excluded-address 192.168.100.1 192.168.100.9 ip dhcp excluded-address 192.168.101.254 ip dhcp pool LAN-POOL-100 ip network 192.168.100.0 255.255.254.0 ip default-gateway 192.168.100.1
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
