Switching, Routing, and Wireless Essentials chapters 1-4

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

exclude

Excludes all output lines that match filtering expression

It is a best practice to configure native VLAN as VLAN 1. DTP is an open standard IEEE protocol that specifies auto negotiation of switch trunk links. Two switchports on link both configured as dynamic auto will successfully negotiate trunk.

False

Which two special characteristics do LAN switches use to alleviate network congestion?

Fast port speeds Fast internal switching

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

Flash

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

Flash memory

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

Forward frame out all ports except port where frame is received

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

Frame buffering

Which two statements are true about half-duplex and full-duplex communications?

Full duplex allows both ends to transmit and receive simultaneously Full duplex increases effectible bandwidth

Which statement describes system LED operation on Cisco Catalyst switches?

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

Where is vlan.dat file stored on switch?

in flash memory

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

physical access to the router

What character is used to enable filtering of commands?

pipe |

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

Running configuration file

Which two DTP modes will form a trunk with an interface that is configured as dynamic auto?

Trunk Dynamic desirable

router bootup sequence

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

Console connection sequence

1. Connect PC by console cable to switch console port. Configure terminal emulation software to connect to switch. 2. Unplug switch power cord. 3. Reconnect power cord to switch and, within 15 seconds, press and hold down Mode button while System LED is still flashing green. 4. Continue pressing Mode button until System LED turns briefly amber and then solid green; then release Mode button. 5. Boot loader switch: prompt appears in terminal emulation software on PC.

Which statement is true about broadcast and collision domains?

Adding switch to network will increase size of collision domain.

Which is true of VLAN 1?

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.

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

Connected host interface associated with VLAN 99

What are three primary benefits of using VLANs?

Cost reduction end user satisfaction security

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

Crossover

Which statement describes SVIs?

Default SVI is created for VLAN 1 for switch adminstration

What is one function of a Layer 2 switch?

Determines which interface is used to forward frame based on destination MAC address

What advantage does SSH offer over Telnet?

Encryption

include

Includes all output lines that match filtering expression

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 allows only VLANs 30 on Fa0/5.

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

It holds VLAN database

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

Router that is configured with multiple subinterfaces

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

Link-local

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

Management VLAN

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

What is a disadvantage of using multilayer switches for inter-VLAN 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 Cisco switch receives untagged frames on 802.1Q trunk port, which VLAN ID is traffic switched to by default?

Native VLAN ID

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

Number of available ports

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

Port becomes inactive

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

Router with at least two LAN interfaces should be used

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

Router-on-a-stick

Which scalable method must be implemented in order to provide inter-VLAN routing on switched network with more than 1000 VLANs?

Routing traffic internally to layer 3 switch device

Which device separates broadcast domains? Which network device can serve as boundary to divide layer 2 broadcast domain?

Router

Which sentence correctly describes SVI inter-VLAN routing method?

SVI is needed for each VLAN.

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

Separate VLAN is needed for voice traffic

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

Separate VLAN should be able to carry uncommon untagged frames to avoid bandwidth contention on data VLANs

Which tasks can be accomplished by using command history feature?

Set command history buffer size. Recall previously entered commands

section

Shows entire section that starts with filtering expression

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

Source MAC address and incoming port

Which switching method makes use of FCS value?

Store-and-forward

Which option correctly describes switching method?

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

When switch forwards frame, which statements are true?

Switch adds source MAC address which is currently not in MAC address table. Frame is unicast frame and will be sent to specific port only.

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

Switch creates many smaller collision domains, and hub increases size of single collision domain

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

VLANs improve network performance by segmenting broadcast domains. VLANs can improve security by isolating sensitive data from the rest of the network.

True

What is the purpose of frame buffers on a switch?

They hold traffic, thus alleviating (make something less severe) network congestion.

How is traffic routed between multiple VLANs on multilayer switch?

Traffic is routed via inter-VLAN interfaces.

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

VLAN ID

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

begin

Network administrator is determining best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking?​

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

What is a disadvantage of using router-on-a-stick inter-VLAN routing?

does not scale well beyond 50 VLANs

What is the default switchport mode for Cisco Catalyst switches?

dynamic auto

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

load power-on self test program

Which command will display packet flow counts, collisions, and buffer failures on interface? Which command will provide information about status of all interfaces including number of giants, runts, and collisions on interface?

show interface

You are troubleshooting inter-VLAN issue on router and need to verify status of access port and its access mode VLAN. Which troubleshooting command would you use to do this?

show interfaces interface-id switchport

You are troubleshooting inter-VLAN issue on router and need to verify status and IP address of all interfaces in condensed format. Which inter-VLAN routing troubleshooting command would you use to do this?

show ip interface brief

You are troubleshooting inter-VLAN issue on switch and need to verify that subinterfaces are in routing table. Which inter-VLAN routing troubleshooting command would you use to do this?

show ip route

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

show ipv6 interface brief

Administrator was troubleshooting router-on-a-stick topology and concluded that problem was related to configuration of VLANs on router subinterfaces. Which two commands can administrator use in router to identify problem?

show running-config show ip interface

You are troubleshooting an inter-VLAN issue on a switch and need to check the list of VLANs and their assigned ports. Which inter-VLAN routing troubleshooting command would you use to do this?

show vlan

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

source MAC address

Which prompt is displayed when network administrator successfully accesses boot loader on switch to recover from system crash? Which network device can be used to eliminate collisions on Ethernet network?

switch:

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 routed port for single network

Network administrator enters following command sequence on Cisco 3560 switch. What is the purpose of these commands?

to make Gi0/1`port routed port

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

to subinterface

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

to view native VLAN

What operational mode should be used on switch port to connect it to 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 username secret secret