CCNA 1 v7.0 Final Exam Part 2

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
ip route 172.16.1.0 255.255.255.0 s0/0/0 121
ip route 172.16.1.0 255.255.255.0 s0/0/0 111
ip route 172.16.1.0 255.255.255.0 s0/0/0 91

What mitigation plan is best for thwarting a DoS attack that is creating a MAC address table overflow?

Disable DTP.
Disable STP.
Enable port security.
Place unused ports in an unused VLAN.

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?

Requiring the users to switch to the 5 GHz band for streaming media is inconvenient and will result in fewer users accessing these services.
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.
The 5 GHz band has a greater range and is therefore likely to be interference-free.
The only users that can switch to the 5 GHz band will be those with the latest wireless NICs, which will reduce usage.

Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?

broadcast DHCPACK
broadcast DHCPREQUEST
unicast DHCPACK
unicast 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
MAC address of the standby router
MAC addresses of both the forwarding and standby routers
MAC address of the forwarding router

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 echo request message to the DHCPv6 or SLAAC-learned address and if no reply is returned, the address is considered unique.
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.
The host checks the local neighbor cache for the learned address and if the address is not cached, it it considered unique.
The host sends an ARP broadcast to the local link and if no hosts send a reply, the address is considered unique.

Match the purpose with its DHCP message type. (Not all options are used.)

a message that is used to locate any available DHCP server on a network

a message that is used to identify the explicit server and lease offer to accept

a message that is used to acknowledge that the lease is successful

a message that is used to suggest a lease to client

DHCPREQUEST

DHCPDISCOVER

DHCPNAK

DHCPOFFER

DHCPACK

Which protocol adds security to remote connections?

FTP
HTTP
NetBEUI
POP
SSH

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

Gi0/0 is not configured as a trunk port.
The command interface GigabitEthernet0/0.5 was entered incorrectly.
There is no IP address configured on the interface Gi0/0.
The no shutdown command is not entered on subinterfaces.
The encapsulation dot1Q 5 command contains the wrong VLAN.

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.

Match each DHCP message type with its description. (Not all options are used.)

DHCPACK

DHCPREQUEST

DHCPNACK

DHCPDISCOVER

DHCPOFFER

a client initiating a message to find a DHCP server

a DHCP server responding to the initial request by a client

the client accepting the IP address provided by the DHCP server

the DHCP server confirming that the address lease has been accepted

What network attack seeks to create a DoS for clients by preventing them from being able to obtain a DHCP lease?

IP address spoofing
DHCP starvation
CAM table attack
DHCP spoofing

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 DNS server and the default gateway router should be in the same subnet.
The IP address of the default gateway router is not contained in the excluded address list.
The default-router and dns-server commands need to be configured with subnet masks.
The IP address of the DNS server is not contained in the excluded address list.

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 G0/1
R1(config)# interface G0/0
R2(config-if)# ip helper-address 10.2.0.250
R2(config)# interface G0/0
R1(config-if)# ip helper-address 10.1.0.254

What protocol or technology uses source IP to destination IP as a load-balancing mechanism?

VTP
EtherChannel
DTP
STP

What protocol should be disabled to help mitigate VLAN attacks?

CDP
ARP
STP
DTP

What protocol or technology requires switches to be in server mode or client mode?

EtherChannel
STP
VTP
DTP

What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)

to create fewer collision domains
to enhance user bandwidth
to create more broadcast domains
to eliminate virtual circuits
to isolate traffic between segments
to isolate ARP request messages from the rest of the network

What command will enable a router to begin sending messages that allow it to configure a link-local address without using an IPv6 DHCP server?

a static route
the ipv6 route ::/0 command
the ipv6 unicast-routing command
the ip routing command

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 it as a trunk port and allow only untagged traffic.
Configure the port as an access port and a member of VLAN1.
Configure the port as an 802.1q trunk port.
Configure the port as a trunk port and assign it to VLAN1.

What are three techniques for mitigating VLAN attacks? (Choose three.)

Use private VLANs.
Enable BPDU guard.
Enable trunking manually
Enable Source Guard.
Disable DTP.
Set the native VLAN to an unused VLAN.

Match the DHCP message types to the order of the DHCPv4 process. (Not all options are used.)

Step 1

Step 2

Step 3

Step 4

DHCPACK

DHCPREQUEST

DHCPDISCOVER

DHCPREPLY

DHCPINFORMATION-REQUEST

DHCPOFFER

In which situation would a technician use the show interfaces switch command?

to determine if remote access is enabled
when packets are being dropped from a particular directly attached host
when an end device can reach local devices, but not remote devices
to determine the MAC address of a directly attached network device on a particular interface

What is a drawback of the local database method of securing device access that can be solved by using AAA with centralized servers?

There is no ability to provide accountability.
User accounts must be configured locally on each device, which is an unscalable authentication solution.
It is very susceptible to brute-force attacks because there is no username.
The passwords can only be stored in plain text in the running configuration.

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.
It sends a DHCPNAK and begins the DHCP process over again.
It discards both offers and sends a new DHCPDISCOVER.
It accepts both DHCPOFFER messages and sends a DHCPACK.

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.)

Three security violations have been detected on this interface.
This port is currently up.
The port is configured as a trunk link.
Security violations will cause this port to shut down immediately.
There is no device currently connected to this port.
The switch port mode for this interface is access mode.

What method of wireless authentication is dependent on a RADIUS authentication server?

WEP
WPA Personal
WPA2 Personal
WPA2 Enterprise

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 native VLAN number used on any trunk should be one of the active data VLANs.
The VLANs for user access ports should be different VLANs than any native VLANs used on trunk ports.
Trunk ports should be configured with port security.
Trunk ports should use the default VLAN as the native VLAN number.

Refer to the exhibit. Which two conclusions can be drawn from the output? (Choose two.)

The EtherChannel is down.
The port channel ID is 2.
The port channel is a Layer 3 channel.
The bundle is fully operational.
The load-balancing method used is source port to destination port.

Match the step number to the sequence of stages that occur during the HSRP failover process. (Not all options are used.)

Step 1

Step 2

Step 3

The standby router assumes the role of the forwarding router using both the IP and MAC addresses of the virtual router.

The standby router stops seeing hello messages from the forwarding router.

The forwarding router fails.

The host initiates an ARP request for the MAC address of the new forwarding router.

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
SECURITY
WIRELESS
MANAGEMENT

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 0/0/0
ip route 0.0.0.0 0.0.0.0 serial 0/1/1
ipv6 route ::1/0 serial 0/1/1
ipv6 route ::/0 serial 0/1/1

Users are complaining of sporadic access to the internet every afternoon. What should be done or checked?

Create static routes to all internal networks and a default route to the internet.
Verify that there is not a default route in any of the edge router routing tables.
Create a floating static route to that network.
Check the statistics on the default route for oversaturation.

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 purges the entire MAC address table.
The switch replaces the old entry and uses the more current port.
The switch updates the refresh timer for the entry.
The switch forwards the frame out of the specified port.

A network administrator is configuring a WLAN. Why would the administrator use a WLAN controller?

to centralize management of multiple WLANs
to provide privacy and integrity to wireless traffic by using encryption
to facilitate group configuration and management of multiple WLANs through a WLC
to provide prioritized service for time-sensitive applications

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.)
Case 7 (NEW):

creating SVI interfaces
adjusting the route metric
enabling IP routing
assigning ports to VLANs
deleting the default VLAN
assigning the ports to the native VLAN
modifying the default VLAN

Which three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)

An autonegotiation failure can result in connectivity issues.
When the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode.
The duplex and speed settings of each switch port can be manually configured.
Enabling autonegotiation on a hub will prevent mismatched port speeds when connecting the hub to the switch.
By default, the speed is set to 100 Mb/s and the duplex mode is set to autonegotiation.
By default, the autonegotiation feature is disabled.

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?

A. The port Gi0/0 should be configured as trunk port.
B. The encapsulation is misconfigured on a subinterface.
C. A no shutdown command should be added in each subinterface configuration.
D. The command interface gigabitEthernet 0/0.1 is wrong.

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?

BPDU guard needs to be activated in the interface configuration command mode.
Access ports configured with root guard cannot be configured with BPDU guard.
Access ports belong to different VLANs.
PortFast is not configured on all access ports.

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.)

MSTP
RSTP
Rapid PVST+
PVST+
STP

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
stateless
manual configuration
SLAAC

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?

DTLS only provides data security through authentication and does not provide encryption for data moving between a wireless LAN controller (WLC) and an access point (AP).
Although DTLS is enabled by default to secure the CAPWAP control channel, it is disabled by default for the data channel.
DTLS is a protocol that only provides security between the access point (AP) and the wireless client.
Data encryption requires a DTLS license to be installed on each access point (AP) prior to being enabled on the wireless LAN controller (WLC).

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.
Configure an IP address on the new switch.
Configure all ports of both switches to access mode.
Enable VTP pruning.

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
to Fa0/1, Fa0/2, Fa0/3, and Fa0/4
to Fa0/1 only​
to Fa0/1, Fa0/2, and Fa0/4 only​
to Fa0/1 and Fa0/2 only

What action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?

The switch forwards the frame out of the specified port.
The switch will forward the frame out all ports except the incoming port.
The switch adds the MAC address and incoming port number to the table.
The switch adds a MAC address table entry mapping for the destination MAC address and the ingress port.

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.
Verify that there is not a default route in any of the edge router routing tables.
Create static routes to all internal networks and a default route to the internet.
Check the statistics on the default route for oversaturation.

What is the effect of entering the ip dhcp snooping configuration command on a switch?

It enables DHCP snooping globally on a switch.
It enables PortFast globally on a switch.
It disables DTP negotiations on trunking ports.
It manually enables a trunk link.

An administrator notices that large numbers of packets are being dropped on one of the branch routers. What should be done or checked?

Create static routes to all internal networks and a default route to the internet.
Create extra static routes to the same location with an AD of 1.
Check the statistics on the default route for oversaturation.
Check the routing table for a missing static route.

What are two switch characteristics that could help alleviate network congestion? (Choose two.)

fast internal switching
large frame buffers
store-and-forward switching
low port density
frame check sequence (FCS) check

What is a result of connecting two or more switches together?

The number of broadcast domains is increased.
The size of the broadcast domain is increased.
The number of collision domains is reduced.
The size of the collision domain is increased.

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?

Verify that the static route to the server is present in the routing table.
Use the “show ip interface brief” command to see if an interface is down.
Check the configuration on the floating static route and adjust the AD.
Create a floating static route to that network.

What is the effect of entering the switchport port-security configuration command on a switch?

It dynamically learns the L2 address and copies it to the running configuration.
It enables port security on an interface.
It enables port security globally on the switch.
It restricts the number of discovery messages, per second, to be received on the interface.

A network administrator is configuring a WLAN. Why would the administrator use multiple lightweight APs?

to centralize management of multiple WLANs
to monitor the operation of the wireless network
to provide prioritized service for time-sensitive applications
to facilitate group configuration and management of multiple WLANs through a WLC

Refer to the exhibit. PC-A and PC-B are both in VLAN 60. PC-A is unable to communicate with PC-B. What is the problem?

The native VLAN should be VLAN 60.
The native VLAN is being pruned from the link.
The trunk has been configured with the switchport nonegotiate command.
The VLAN that is used by PC-A is not in the list of allowed VLANs on the trunk.

A network administrator is configuring a WLAN. Why would the administrator use RADIUS servers on the network?

to centralize management of multiple WLANs
to restrict access to the WLAN by authorized, authenticated users only
to facilitate group configuration and management of multiple WLANs through a WLC
to monitor the operation of the wireless network

What is the effect of entering the switchport mode access configuration command on a switch?

It enables BPDU guard on a specific port.
It manually enables a trunk link.
It disables an unused port.
It disables DTP on a non-trunking interface.

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.)

The domain-name line is included in the ipv6 dhcp pool section.
The dns-server line is included in the ipv6 dhcp pool section.
The ipv6 nd other-config-flag is entered for the interface that faces the LAN segment.
The address prefix line is included in the ipv6 dhcp pool section.
The ipv6 nd managed-config-flag is entered for the interface that faces the LAN segment.

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
to centralize management of multiple WLANs
to facilitate group configuration and management of multiple WLANs through a WLC
to provide prioritized service for time-sensitive applications

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 next hop address is incorrect.
The interface is incorrect.
The destination network is incorrect.
The network prefix is incorrect.

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 updates the refresh timer for the entry.
The switch resets the refresh timer on all MAC address table entries.
The switch replaces the old entry and uses the more current port.
The switch will forward the frame out all ports except the incoming port.

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?

Create a floating static route to that network.
Check the configuration on the floating static route and adjust the AD.
Check the configuration of the exit interface on the new static route.
Verify that the static route to the server is present in the routing table.

What is the effect of entering the ip arp inspection vlan 10 configuration command on a switch?

It specifies the maximum number of L2 addresses allowed on a port.
It enables DAI on specific switch interfaces previously configured with DHCP snooping.
It enables DHCP snooping globally on a switch.
It globally enables BPDU guard on all PortFast-enabled ports.

What protocol or technology manages trunk negotiations between switches?

VTP
EtherChannel
DTP
STP

A network administrator is configuring a WLAN. Why would the administrator apply WPA2 with AES to the WLAN?

to reduce the risk of unauthorized APs being added to the network
to centralize management of multiple WLANs
to provide prioritized service for time-sensitive applications
to provide privacy and integrity to wireless traffic by using encryption

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?

Ensure that the old default route has been removed from the company edge routers.
Verify that the static route to the server is present in the routing table.
Check the configuration on the floating static route and adjust the AD.
Create a floating static route to that network.

What IPv6 prefix is designed for link-local communication?

2001::/3
ff00::/8
fc::/07
fe80::/10

What is the effect of entering the ip dhcp snooping limit rate 6 configuration command on a switch?

It displays the IP-to-MAC address associations for switch interfaces.
It enables port security globally on the switch.
It restricts the number of discovery messages, per second, to be received on the interface.
It dynamically learns the L2 address and copies it to the running configuration.

A network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPv4 addresses on an AP?

to eliminate outsiders scanning for available SSIDs in the area
to reduce the risk of unauthorized APs being added to the network
to reduce outsiders intercepting data or accessing the wireless network by using a well-known address range
to reduce the risk of interference by external devices such as microwave ovens

What is the effect of entering the ip arp inspection validate src-mac configuration command on a switch?

It checks the source L2 address in the Ethernet header against the sender L2 address in the ARP body.
It disables all trunk ports.
It displays the IP-to-MAC address associations for switch interfaces.
It enables portfast on a specific switch interface.

What protocol or technology is a Cisco proprietary protocol that is automatically enabled on 2960 switches?

DTP
STP
VTP
EtherChannel

What address and prefix length is used when configuring an IPv6 default static route?

::/0
FF02::1/8
0.0.0.0/0
::1/128

What are two characteristics of Cisco Express Forwarding (CEF)? (Choose two.)

When a packet arrives on a router interface, it is forwarded to the control plane where the CPU matches the destination address with a matching routing table entry.
This is the fastest forwarding mechanism on Cisco routers and multilayer switches.
With this switching method, flow information for a packet is stored in the fast-switching cache to forward future packets to the same destination without CPU intervention.
Packets are forwarded based on information in the FIB and an adjacency table.
When a packet arrives on a router interface, it is forwarded to the control plane where the CPU searches for a match in the fast-switching cache.

Which term describes the role of a Cisco switch in the 802.1X port-based access control?

agent
supplicant
authenticator
authentication server

Which Cisco solution helps prevent ARP spoofing and ARP poisoning attacks?

Dynamic ARP Inspection
IP Source Guard
DHCP Snooping
Port Security

What is an advantage of PVST+?

PVST+ optimizes performance on the network through autoselection of the root bridge.
PVST+ reduces bandwidth consumption compared to traditional implementations of STP that use CST.
PVST+ requires fewer CPU cycles for all the switches in the network.
PVST+ optimizes performance on the network through load sharing.

What protocol or technology uses a standby router to assume packet-forwarding responsibility if the active router fails?

EtherChannel
DTP
HSRP
VTP

What is the effect of entering the show ip dhcp snooping binding configuration command on a switch?

It switches a trunk port to access mode.
It checks the source L2 address in the Ethernet header against the sender L2 address in the ARP body.
It restricts the number of discovery messages, per second, to be received on the interface.
It displays the IP-to-MAC address associations for switch interfaces.

What action takes place when the source MAC address of a frame entering a switch is in the MAC address table?

The switch forwards the frame out of the specified port.
The switch updates the refresh timer for the entry.
The switch replaces the old entry and uses the more current port.
The switch adds a MAC address table entry for the destination MAC address and the egress port.

A small publishing company has a network design such that when a broadcast is sent on the LAN, 200 devices receive the transmitted broadcast. How can the network administrator reduce the number of devices that receive broadcast traffic?

Add more switches so that fewer devices are on a particular switch.
Replace the switches with switches that have more ports per switch. This will allow more devices on a particular switch.
Segment the LAN into smaller LANs and route between them.*
Replace at least half of the switches with hubs to reduce the size of the broadcast domain.

What defines a host route on a Cisco router?

The link-local address is added automatically to the routing table as an IPv6 host route.
An IPv4 static host route configuration uses a destination IP address of a specific device and a /32 subnet mask.
A host route is designated with a C in the routing table.
A static IPv6 host route must include the interface type and the interface number of the next hop router.

What else is required when configuring an IPv6 static route using a next-hop link-local address?

administrative distance
ip address of the neighbor router
network number and subnet mask on the interface of the neighbor router
interface number and type

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.)

personal
AES
TKIP
WEP
enterprise

Which mitigation technique would prevent rogue servers from providing false IPv6 configuration parameters to clients?

enabling DHCPv6 Guard
enabling RA Guard
implementing port security on edge ports
disabling CDP on edge ports

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
subnet mask in dotted decimal notation
domain name
administrative distance
prefix
DNS server IP address

While attending a conference, participants are using laptops for network connectivity. When a guest speaker attempts to connect to the network, the laptop fails to display any available wireless networks. The access point must be operating in which mode?

mixed
passive
active
open

Which three components are combined to form a bridge ID?

extended system ID
cost
IP address
bridge priority
MAC address
port ID