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

Set the native VLAN to an unused VLAN.

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

when packets are being dropped from a particular directly attached host

to determine if remote access is enabled

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?

User accounts must be configured locally on each device, which is an unscalable authentication solution.

There is no ability to provide accountability.

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.)

The switch port mode for this interface is access mode.

Security violations will cause this port to shut down immediately.

Three security violations have been detected on this interface.

There is no device currently connected to this port.

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.

The native VLAN number used on any trunk should be one of the active data VLANs.

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 port channel is a Layer 3 channel.

The bundle is fully operational.

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?

ip route 0.0.0.0 0.0.0.0 serial 0/1/1

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

Check the statistics on the default route for oversaturation.

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.

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.

The switch purges the entire MAC address table.

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 facilitate group configuration and management of multiple WLANs through a WLC

to centralize management of multiple WLANs

to provide privacy and integrity to wireless traffic by using encryption

to provide prioritized service for time-sensitive applications

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

The duplex and speed settings of each switch port can be manually configured.

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.

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.

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 encapsulation is misconfigured on a subinterface.

The port Gi0/0 should be configured as trunk port.

A no shutdown command should be added in each subinterface configuration.

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?

PortFast is not configured on all access ports.

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.

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.

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).

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.

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, Fa0/2, and Fa0/4 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 adds the MAC address and incoming port number to the table.

The switch will forward the frame out all ports except the incoming port.

The switch forwards the frame out of the specified port.

The switch adds a MAC address table entry mapping for the destination MAC address and the ingress port.

The switch adds a MAC address table entry for the destination MAC address and the egress 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?

Check the routing table for a missing static route.

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.

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

frame check sequence (FCS) check

Networking Quiz

Authored by Ernur Esenbaev

others

11th Grade

Used 1+ times

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MULTIPLE SELECT QUESTION

30 sec • 1 pt

What two commands will allow hosts on the new subnet to receive addresses from the DHCP4 server? (Choose two.)

R1(config)# interface G0/1

R2(config-if)# ip helper-address 10.2.0.250

R1(config)# interface G0/0

R2(config)# interface G0/0

R1(config-if)# ip helper-address 10.2.0.250

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

VTP

EtherChannel

DTP

STP

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What protocol should be disabled to help mitigate VLAN attacks?

CDP

ARP

STP

DTP

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

EtherChannel

STP

VTP

DTP

MULTIPLE SELECT QUESTION

30 sec • 1 pt

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

to enhance user bandwidth

to create more broadcast domains

to isolate traffic between segments

to create fewer collision domains

to eliminate virtual circuits

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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.

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Networking Quiz

What two commands will allow hosts on the new subnet to receive addresses from the DHCP4 server? (Choose two.)

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

What protocol should be disabled to help mitigate VLAN attacks?

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

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

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 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?

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

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

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

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