NET FINALS REVIEWER
NET Finals Reviewer
Prepare yourself for success with our comprehensive NET Finals Reviewer quiz! This quiz covers essential networking concepts, including Ethernet configurations, VLANs, Spanning Tree Protocol, and EtherChannel management.
Test your knowledge and sharpen your skills with topics like:
- Ethernet Frame Structure
- Switching Concepts
- Network Protocols
- STP Port Roles and Fun
ctions
If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collisions be observed?
On both ends of the connection
On the half-duplex end of the connection
Only on serial interfaces
Which protocol adds security to remote connections?
SSH
FTP
HTTP
What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame?
64 bytes
32 bytes
54 bytes
Which impact does adding a Layer 2 switch have on a network?
An increase in the number of dropped frames
An increase in the size of the broadcast domain
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.
A hub divides collision domains, and a switch divides broadcast domains.
Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
Which statement is correct about Ethernet switch frame forwarding decisions?
Cut-through frame forwarding ensures that invalid frames are always dropped.
Frame forwarding decisions are based on MAC address and port mappings in the CAM table
Unicast frames are always forwarded regardless of the destination MAC address.
On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?
Switch(config)# no vlan 100
Switch# delete flash:vlan.dat
Switch(config-if)# no switchport access vlan 100
A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?
All devices in all VLANs see the frame.
Only devices in VLAN 20 see the frame.
Only devices that are connected to the local switch see the frame
What additional information is contained in the 12-bit extended system ID of a BPDU?
MAC address
VLAN ID
IP address
During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process?
All the switches send out BPDUs advertising themselves as the root bridge.
Each switch determines the best path to forward traffic.
Each switch determines what port to block to prevent a loop from occurring.
Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?
Designated port
Root port
Disabled port
Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)
Edge port
PortFast
Extended system ID
Bridge ID
Which three components are combined to form a bridge ID?
Extended system ID
Bridge priority
MAC address
Cost
In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)
Disabled
Forwarding
Blocking
Learning
If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?
Lowest MAC address
Highest IP address
Highest MAC address
What is the function of STP in a scalable network?
It disables redundant paths to eliminate Layer 2 loops.
It combines multiple switch trunk links to act as one logical link for increased bandwidth.
What is a characteristic of spanning tree?
It is enabled by default on Cisco switches.
It has a TTL mechanism that works at Layer 2.
It prevents propagation of Layer 2 broadcast frames.
What is the value used to determine which port on a non-root bridge will become a root port in a STP network?
The lowest MAC address of all the ports in the switch
The path cost
The VTP revision number
A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?
28672
34816
1
Which statement is true regarding the use of PAgP to create EtherChannels?
It requires full duplex.
It is Cisco proprietary.
It requires more physical links than LACP does.
What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.)
All the interfaces need to work at the same speed.
All interfaces need to be assigned to different VLANs.
All the interfaces need to be working in the same duplex mode.
Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.)
MAC address
Speed
VLAN information
A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down?
The remaining two interfaces continue to load balance traffic.
One interface becomes an active link for data traffic and the other becomes a backup link.
The EtherChannel fails.
A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode auto . Which command must be used on SW2 to enable this EtherChannel?
SW2(config-if-range)# channel-group 1 mode passive
SW2(config-if-range)# channel-group 1 mode desirable
SW2(config-if-range)# channel-group 1 mode active
Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?
PAgP
LACP
DTP
What is a requirement to configure a trunking EtherChannel between two switches?
The allowed range of VLANs must be the same on both switches
The participating interfaces must be assigned the same VLAN number on both switches.
What are two advantages of EtherChannel? (Choose two.)
Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.
Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state.
EtherChannel uses upgraded physical links to provide increased bandwidth.
Configuring the EtherChannel interface provides consistency in the configuration of the physical links.
A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root?
61440
32768
65535
A switch is configured to run STP. What term describes the reference point for all path calculations?
Root bridge
Root port
Alternate port
A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge?
Bridge ID
Bridge priority
MAC Address
Which statement describes an EtherChannel implementation?
A trunked port can be part of an EtherChannel bundle.
EtherChannel can support up to a maximum of ten separate links.
PAgP cannot be used in conjunction with EtherChannel.
Which statement describes a characteristic of EtherChannel?
It is made by combining multiple physical links that are seen as one link between two switches.
It consists of multiple parallel links between a switch and a router.
Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.)
Desirable
Auto
Passive
On
Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic?
SW1: on SW2: on
SW1: auto SW2: auto
When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?
On
Auto
Active
What are two load-balancing methods in the EtherChannel technology? (Choose two.)
Source MAC to destination MAC
Source IP to destination IP
Source port to destination port
Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?
STP
MST
PVST+
What is the outcome of a Layer 2 broadcast storm?
New traffic is discarded by the switch because it is unable to be processed.
Routers will take over the forwarding of frames as switches become congested.
Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)
Static default routes
Redundant links between Layer 2 switches
Removing single points of failure with multiple Layer 2 switches
A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel?
Spanning Tree Protocol will transition the failed physical interface into forwarding mode.
The EtherChannel will remain functional.
A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge?
Bridge priority
MAC Address
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 device MAC addresses
The VLAN assignment and membership for all switch ports
A switch is configured to run STP. What term describes a field used to specify a VLAN ID?
Extended system ID
Bridge priority
Bridge ID
Which port role is assigned to the switch port that has the lowest cost to reach the root bridge?
Designated port
Root port
In which two PVST+ port states are MAC addresses learned? (Choose two.)
Learning
Forwarding
Blocking
Listening
What is a characteristic of a routed port on a Layer 3 switch?
It is not assigned to a VLAN.
It supports trunking.
A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# mdix auto command?
It updates the MAC address table for the associated port.
It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.
Which solution would help a college alleviate network congestion due to collisions?
A firewall that connects to two Internet providers
A high port density switch
A router with two Ethernet ports
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
The VLAN assignment and trunking encapsulation
The VLAN assignment and native VLAN
What type of VLAN is configured specifically for network traffic such as SSH, Telnet, HTTPS, HHTP, and SNMP?
Management VLAN
Security VLAN
Voice VLAN
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