Cisco Semester 2, CH 1-4 Quiz Questions

A Cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a "switchport trunk allowed vlan 30" command on Fa0/5?

It only allows VLAN 30 on fa0/5

Which switch characteristic helps keep traffic local and alleviates network congestion?

high port density

Which statement describes SVIs? -A default SVI is created for VLAN 1 for switch administration. -Creating an SVI automatically creates an associated VLAN. -An SVI is created automatically for each VLAN on a multilayer switch. -An SVI can only be created for the management VLAN.

A default SVI is created for VLAN 1 for switch administration.

Which solution would help a college alleviate network congestion due to collisions?

A high port density switch

What type of Ethernet cable would be used to connect one switch to another switch when neither switch supports the auto-MDIX feature?

Crossover

What is the default switchport mode for Cisco Catalyst switches?

Dynamic Auto

What advantage does SSH offer over Telnet?

Encryption

True or False? It is a best practice to configure the native VLAN as VLAN

False

True or false? DTP is an open standard IEEE protocol that specifies auto negotiation of switch trunk links.

False

True or false? Two switchports on a link both configured as dynamic auto will successfully negotiate a trunk.

False

In which memory location are the VLAN configurations of normal range VLANs stored on a Catalyst switch?

Flash

In which location are the normal range VLANs stored on a Cisco switch by default?

Flash memory

What will a Cisco LAN switch do if it receives an incoming frame and the destination MAC address is not listed in the MAC address table?

Forward the frame out all ports except the port where the frame is received

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port?

Frame buffering

Which characteristic describes cut-through switching?

Frames are forwarded without any error checking.

What is a characteristic of a routed port on a Layer 3 switch?

It is not assigned to a VLAN.

Which information does a switch use to keep the MAC address table information current?

The source MAC address and the incoming port

Which switching method makes use of the FCS value?

store-and-forward

Which prompt is displayed when a network administrator successfully accesses the boot loader on a switch to recover from a system crash?

switch:

What is the meaning of the number 10 in the encapsulation dot1Q 10 native router subinterface command?​

the VLAN ID

A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed?

the VLAN assignment and membership for all switch ports

A small college uses VLAN 10 for the classroom network and VLAN 20 for the office network. What is needed to enable communication between these two VLANs while using legacy inter-VLAN routing?

-A router with at least two LAN interfaces should be used

What is the significant difference between a hub and a Layer 2 LAN switch? -A switch creates many smaller collision domains, and a hub increases the size of a single collision domain. -A hub forwards frames, and a switch forwards only packets. -Each port of a hub is a collision domain, and each port of a switch is a broadcast domain. -A hub divides collision domains, and a switch divides broadcast domains.

-A switch creates many smaller collision domains, and a hub increases the size of a single collision domain.

Which statement is true about broadcast and collision domains? -The more interfaces a router has the larger the resulting broadcast domain. -Adding a router to a network will increase the size of the collision domain. -Adding a switch to a network will increase the size of the broadcast domain. -The size of the collision domain can be reduced by adding hubs to a network.

-Adding a switch to a network will increase the size of the broadcast domain.

Which is true of VLAN 1? (Choose all that apply.) -All switch ports are assigned to VLAN 1 by default. -The native VLAN is VLAN 1 by default. -The management VLAN is VLAN 1 by default. -VLAN 1 cannot be renamed or deleted.

-All switch ports are assigned to VLAN 1 by default. -The native VLAN is VLAN 1 by default. -The management VLAN is VLAN 1 by default. -VLAN 1 cannot be renamed or deleted.

Which four steps are needed to configure a voice VLAN on a switch port? (Choose four). -Activate spanning-tree PortFast on the interface. -Configure the switch port in access mode. -Assign the voice VLAN to the switch port. -Configure the switch port interface with subinterfaces. -Assign a data VLAN to the switch port. -Ensure that voice traffic is trusted and tagged with a CoS priority value. -Configure the interface as an IEEE 802.1Q trunk. -Add a voice VLAN.

-Configure the switch port in access mode. -Assign the voice VLAN to the switch port. -Ensure that voice traffic is trusted and tagged with a CoS priority value. -Add a voice VLAN.

Which two statements are true about half-duplex and full-duplex communications? (Choose two.) -All modern NICs support both half-duplex and full-duplex communication. -Half duplex has only one channel. -Full duplex offers 100 percent potential use of the bandwidth. -Full duplex allows both ends to transmit and receive simultaneously. -Full duplex increases the effective bandwidth.

-Full duplex allows both ends to transmit and receive simultaneously. -Full duplex increases the effective bandwidth.

Which statement describes the system LED operation on Cisco Catalyst switches? -If the LED is amber, the system is receiving power but it is not functioning properly. -If the LED is amber, the system is not powered on. -If the LED is blinking green, the system is operating normally. -If the LED is blinking amber, the switch is performing POST.

-If the LED is amber, the system is receiving power but it is not functioning properly.

On a Cisco switch, where is extended range VLAN information stored?

-Running config file

Which tasks can be accomplished by using the command history feature? -Set the command history buffer size. -Save command lines in a log file for future reference. -Recall up to 15 command lines by default. -View a list of commands entered in a previous session. -Recall previously entered commands.

-Set the command history buffer size. -Recall previously entered commands.

Which two statements are correct with respect to SVI inter-VLAN routing? (Choose two.) -Switching packets is faster with SVI. -Virtual interfaces support subinterfaces. -SVIs eliminate the need for a default gateway in the hosts. -There is no need for a connection to a router. -SVIs can be bundled into EtherChannels.

-Switching packets is faster with SVI. -There is no need for a connection to a router.

A network administrator is determining the best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking?​ (Choose two.) -between a switch and a server that has an 802.1Q NIC -between two switches that share a common VLAN -between two switches that utilize multiple VLANs -between a switch and a network printer -between a switch and a client PC

-between a switch and a server that has an 802.1Q NIC -between two switches that utilize multiple VLANs

What are three primary benefits of using VLANs? (Choose three.) -end user satisfaction -no required configuration -cost reduction -a reduction in the number of trunk links -security -improved IT staff efficiency

-cost reduction -security -improved IT staff efficiency

What is one function of a Layer 2 switch? -learns the port assigned to a host by examining the destination MAC address -forwards data based on logical addressing -determines which interface is used to forward a frame based on the destination MAC address -duplicates the electrical signal of each frame to every port

-determines which interface is used to forward a frame based on the destination MAC address

Which two special characteristics do LAN switches use to alleviate network congestion? (Choose two.) -fast port speeds -fast internal switching -low port densities -small frame buffers

-fast port speeds -fast internal switching

Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.) -when a neighbor switch uses a DTP mode of dynamic desirable -when a neighbor switch uses a DTP mode of dynamic auto -on links that should not be trunking -when connecting a Cisco switch to a non-Cisco switch -on links that should dynamically attempt trunking

-on links that should not be trunking -when connecting a Cisco switch to a non-Cisco switch

An administrator was troubleshooting a router-on-a-stick topology and concluded that the problem was related to the configuration of VLANs on the router subinterfaces. Which two commands can the administrator use in the router to identify the problem? (Choose two.) -show ip interface -show vlan -show ip protocols -show controllers -show running-config

-show ip interface -show running-config

Which option correctly describes a switching method? -cut-through: provides the flexibility to support any mix of Ethernet speeds -cut-through: makes a forwarding decision after receiving the entire frame -store-and-forward: forwards the frame immediately after examining its destination MAC address -store-and-forward: ensures that the frame is free of physical and data-link errors

-store-and-forward: ensures that the frame is free of physical and data-link errors

For what reason would a network administrator use the show interfaces trunk command on a switch?

-to view the native VLAN

Which two DTP modes will form a trunk with an interface that is configured as dynamic auto? (Choose two.) -access -trunk -dynamic auto -dynamic desirable

-trunk -dynamic desirable

Which router bootup sequence is correct?​

1 - perform the POST and load the bootstrap program 2 - locate and load the Cisco IOS software 3 - locate and load the startup configuration file or enter setup mode

Which port speed will be autonegotiated between a host with a 1 Gbps NIC connecting to a Cisco Catalyst 2960 switch with a 100 Mbps port?

100 Mbps

What is the significant difference between a hub and a Layer 2 LAN switch?

A hub extends a collision domain, and a switch divides collision domains.

What is required to perform router-on-a-stick inter-VLAN routing?

A router that is configured with multiple subinterfaces

If an organization is changing to include Cisco IP phones in its network, what design feature must be considered to ensure voice quality?

A separate VLAN is needed for voice traffic

What is the purpose of setting the native VLAN separate from data VLANs?

A separate VLAN should be used to carry uncommon untagged frames to avoid bandwidth contention on data VLANs

A network administrator has configured ​VLAN 99 as the management VLAN and has configured it with an IP address and subnet mask. The administrator issues the show interface vlan 99 command and notices that the line protocol is down. Which action can change the state of the line protocol to up?

Connect a host to an interface associated with VLAN99

Which sentence correctly describes the SVI inter-VLAN routing method? -A physical interface is needed for every VLAN that is created. -The encapsulation type must be configured on the SVI. -Subinterfaces have to be created. -An SVI is needed for each VLAN.

An SVI is needed for each VLAN.

What does a switch use to locate and load the IOS image?

BOOT environment variable

When verifying routes, what code is used to identify directly connected routes in the routing table?

C

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the "BranchSw(config-if)# duplex full" command?

It allows data to flow in both directions at the same time on the interface.

What is the purpose of the vlan.dat file on a switch?

It holds the VLAN database

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​

It is a logical interface internal to the router.

What is a disadvantage of using multilayer switches for inter-VLAN routing? -Multilayer switches are more expensive than router-on-a-stick implementations. -Spanning tree must be disabled in order to implement routing on a multilayer switch. -Multilayer switches have higher latency for Layer 3 routing. -Multilayer switches are limited to using trunk links for Layer 3 routing.

Multilayer switches are more expensive than router-on-a-stick implementations

Which type of VLAN is assigned to 802.1Q trunk ports to carry untagged traffic?

Native

When a Cisco switch receives untagged frames on a 802.1Q trunk port, which VLAN ID is the traffic switched to by default?

Native VLAN ID

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

Only devices in the VLAN20 see the frame

What must an administrator have in order to reset a lost password on a router?

Physical Access to the Router

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?

Port Fa0/11 will be returned to VLAN 1.

Which device separates broadcast domains?

Router

Which network device can serve as a boundary to divide a Layer 2 broadcast domain?

Router

Which type of address does a switch use to build the MAC address table?

Source MAC address

Which network device can be used to eliminate collisions on an Ethernet network?

Switch

On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?

Switch(config)# no vlan 100

An administrator is investigating a failure on a trunk link between a Cisco switch and a switch from another vendor. After a few show commands, the administrator notices that the switches are not negotiating a trunk. What is a probable cause for this issue?

Switches from other vendors do not support DTP

What does the term "port density" represent for an Ethernet switch?

The number of available ports

What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch?

The port becomes inactive

What happens to switch ports after the VLAN to which they are assigned is deleted?

The ports stop communicating with the attached devices

What is the purpose of frame buffers on a switch?

They hold traffic, thus alleviating network congestion

How do switch buffers affect network performance?

They store frames received, thus preventing premature frame discarding when network congestion occurs.

While configuring inter-VLAN routing on a multilayer switch, a network administrator issues the no switchport command on an interface that is connected to another switch. What is the purpose of this command?

To create a routed port for a single network

A network administrator enters the following command sequence on a Cisco 3560 switch. What is the purpose of these commands? Switch(config)# interface gigabitethernet 0/1 Switch(config-if)# no switchport

To make g0/1 a routed port

How is traffic routed between multiple VLANs on a multilayer switch?

Traffic is routed via internal VLAN interfaces

True or False? VLANs can improve security by isolating sensitive data from the rest of the network.

True

True or False? VLANs improve network performance by segmenting broadcast domains.

True

Which filtering expression will show all output lines starting from the line matching the filtering expression?

begin

What type of VLAN is used to separate the network into groups of users or devices?

data VLAN

What is a disadvantage of using router-on-a-stick inter-VLAN routing? -requires the use of more physical interfaces than legacy inter-VLAN routing -does not scale well beyond 50 VLANs -requires the use of multiple router interfaces configured to operate as access links -does not support VLAN-tagged packets

does not scale well beyond 50 VLANs

Where is the vlan.dat file stored on a switch?

flash memory

An IPv6-enabled interface is required to have which type of address?

link-local

What is the first action in the boot sequence when a switch is powered on?

load a power-on self-test program

Which distinct type of VLAN is used by an administrator to access and configure a switch?

management

A PC is to access a web server on another network. Which inter-VLAN method will provide the highest bandwidth at Layer 3 and also provide a default gateway for the PC?

multilayer switch with routing enabled

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

native

What character is used to enable the filtering of commands?

pipe |

Which type of inter-VLAN communication design requires the configuration of multiple subinterfaces?

router on a stick

Which scalable method must be implemented in order to provide inter-VLAN routing on a switched network with more than 1000 VLANs? -configuring static routes on a Layer 2 switch device -connecting each physical router interface to a different physical switch port, with each switch port assigned to a different VLAN -routing traffic internally to a Layer 3 switch device -connecting a router interface to a switch port that is configured in trunk mode to route packets between VLANs, with each VLAN assigned to a router subinterface​

routing traffic internally to a Layer 3 switch device

Which command displays information about the auto-MDIX setting for a specific interface?​

show controllers

Which command will display packet flow counts, collisions, and buffer failures on an interface?

show interface

Which command will provide information about the status of all interfaces including the number of giants, runts, and collisions on the interface?

show interfaces

Which command will display a summary of all IPv6-enabled interfaces on a router that includes the IPv6 address and operational status?

show ipv6 interface brief

Which switching method ensures that the incoming frame is error-free before forwarding?

store-and-forward

When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where should the IP address be assigned?

to the subinterface

What operational mode should be used on a switch port to connect it to a router for router-on-a-stick inter-VLAN routing?

trunk

When configuring a switch for SSH access, what other command that is associated with the login local command is required to be entered on the switch?

username admin secret cisco