Basic Device Configuration
A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config)#interface VLAN88 command?
a. It enters configuration mode for a switch virtual interface.
b. It applies an IPv4 address to the virtual interface.
c. It applies an IPv6 address to the virtual interface.
d. It permits an IPv6 address to be configured on a switch physical interface.
e. It updates the MAC address table for the associated port.
what is
a. It enters configuration mode for a switch virtual interface.
What is a result of connecting two or more switches together?
a. The number of broadcast domains is increased.
b. The size of the broadcast domain is increased.
c. The number of collision domains is reduced.
d. The size of the collision domain is increased.
what is
b. The size of the broadcast domain is increased.
When two or more switches are connected together, the size of the broadcast domain is increased and so is the number of collision domains. The number of broadcast domains is increased only when routers are added.
What type of VLAN is configured specifically for network traffic such as SSH, Telnet, HTTPS, HTTP, and SNMP?
a. management VLAN
b. trunk VLAN
c. security VLAN
d. voice VLAN
what is
a. 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?
a. router on a stick
b. trunked interface between the router and the switch
c. multilayer switch with routing enabled
what is
c. multilayered switch with routing enabled
A router-on-a-stick design is the same as having a trunked interface between the router and the switch. This design works, but does not scale well because all VLANs must traverse the one connection between the router and the switch. Multiple physical interfaces on the router would be faster than the router-on-a-stick design, but a router has a limited number of physical interfaces. Layer 3 switches with routing enabled have more Ethernet ports as well as the ability to route.
Which three components are combined to form a bridge ID?
a. port ID
b. IP address
c. extended system ID
d. MAC address
e. bridge priority
f. cost
what is
c. extended system ID
d. MAC address
e. bridge priority
Which problem is evident if the show ip interface command shows that the interface is down and the line protocol is down?
a. An encapsulation mismatch has occurred.
b. A cable has not been attached to the port.
c. The no shutdown command has not been issued on the interface.
d. There is an IP address conflict with the configured address on the interface.
what is
A cable has not been attached to the port.
If an interface has not been brought up with the no shutdown command, the interface status shows administratively down. A duplicate IP address will not bring an interface down. An encapsulation error is normally found using the show interfaces command.
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?
a. Add more switches so that fewer devices are on a particular switch.
b. Replace the switches with switches that have more ports per switch. This will allow more devices on a particular switch.
c. Segment the LAN into smaller LANs and route between them.
d. Replace at least half of the switches with hubs to reduce the size of the broadcast domain.
what is
c. Segment the LAN into smaller LANs and route between them.
By dividing the one big network into two smaller network, the network administrator has created two smaller broadcast domains. When a broadcast is sent on the network now, the broadcast will only be sent to the devices on the same Ethernet LAN. The other LAN will not receive the broadcast.
Which type of traffic is designed for a native VLAN?
a. user-generated
b. tagged
c. untagged
d. management
what is
c. untagged
A native VLAN carries untagged traffic, which is traffic that does not come from a VLAN. A data VLAN carries user-generated traffic. A management VLAN carries management traffic
What is a disadvantage of using multilayer switches for inter-VLAN routing?
a. multilayered switches are more expensive than router-on-a-stick implementations
b. multilayer switches are limited to using trunk links for layer 3 routing
c. multilayer switches have higher latency for layer 3
what is
multilayered switches are more expensive than router-on-a-stick implementations
The main disadvantage of the multilayer switches is their higher cost. Because both routing and switching are done in hardware, multilayer switches are faster than router-on-a-stick.
What value determines the root bridge when all switches connected by trunk links have default STP configurations?
a. MAC address
b. VLAN ID
c. bridge priority
what is
a. MAC address
When all switches are configured with the same default bridge priority, the MAC address becomes the deciding factor for the election of the root bridge. All links on the same VLAN will also have the same extended system ID so this will not contribute to determine which switch is the root for that VLAN.
In what situation would a Layer 2 switch have an IP address configured?
a. when the Layer 2 switch needs to forward user traffic to another device
b. when the Layer 2 switch is the default gateway of user traffic
c. when the Layer 2 switch needs to be remotely managed
d. when the Layer 2 switch is using a routed port
what is
c. when the Layer 2 switch needs to be remotely managed
Layer 2 switches can be configured with an IP address so that they can be remotely managed by an administrator. Layer 3 switches can use an IP address on routed ports. Layer 2 switches do not need a configured IP address to forward user traffic or act as a default gateway.
Which network device can be used to eliminate collisions on an Ethernet network?
a. router
b. firewall
c. switch
d. hub
what is
c. switch
A switch provides microsegmentation so that no other device competes for the same Ethernet network bandwidth.
What are three primary benefits of using VLANs? (Choose two.)
a. end of user satisfaction
b. cost reduction
c. security
d. more switches
what is
b. cost reduction
c. security
What is a disadvantage of using router-on-a-stick inter-VLAN routing?
a. does not scale well beyond 50 VLANs
b. does not support VLAN-tagging packets
c. requires the use of more physical interfaces than legacy inter-VLAN routing
what is
a. does not scale well beyond 50 VLANs
Router-on-a-stick inter-VLAN routing does not scale beyond 50 VLANs. The router can receive VLAN-tagged packets and send VLAN-tagged packets to a destination. Router-on-a-stick inter-VLAN routing can utilize a single router interface as a trunk link to receive and forward VLAN traffic and does not require multiple interfaces.
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?
a. each switch determines the best path to forward traffic
b. all the swtiches send out BPU's advertising themselves as the root bridge
c. each switch with a lower root ID than its neighbor will not send BPDUs
what is
b. all the swtiches send out BPU's advertising themselves as the root bridge
After a Cisco switch boots, it will send out BPDUs containing its individual BID and the root ID for the network. By default, the initial root ID at bootup will be the ID of that individual switch. After a root bridge is elected, port states and paths are chosen.
What advantage does SSH offer over Telnet?
a. connection-oriented services
b. encryption
c. username and password authentication
what is
b. encryption
What is the purpose of frame buffers on a switch?
a. they hold traffic, thus alleviating network segmentation.
b. they execute checksum values before transmission
c. they provide basic security scan on received frames
what is
a. they hold traffic, thus alleviating network segmentation.
Switches have large frame buffers that allow data waiting to be transmitted to be stored so the data will not be dropped. This feature is beneficial especially if the incoming traffic is from a faster port than the egress port used for transmitting.
If an organization is changing to include Cisco IP phones in its network, what design feature must be considered to ensure voice quality?
a. voice traffic and data traffic require separate trunk links between switches
b. voice traffic needs to be tagged with native VLAN
c. a separate VLAN is needed for voice traffic
what is
c. a separate VLAN is needed for voice traffic
A PC commonly connects to an IP phone and the IP phone, in turn, connects to a switch. The phone does not require a separate port. Because voice traffic cannot tolerate much packet delay, it needs to be in a separate VLAN. The voice VLAN can be configured to provide quality of service (QoS), which will ensure that the voice traffic has a higher priority than data traffic.
Which sentence correctly describes the SVI inter-VLAN routing method?
a. an SVI is needed for each VLAN
b. the encapsultated type must be configured with SVI
c. subinterfaces have to be created
what is
a. an SVI is needed for each VLAN
In order to create SVI inter-VLAN routing on a Layer 3 switch, the VLAN must exist in the database and the SVI must be explicitly created. The only exception is VLAN1, which is created by default.
Which three port states are used by Rapid PVST+? (Choose three.)
a. forwarding
b. learning
c. discarding
d. listening
what is
a. forwarding
b. learning
c. discarding
The Rapid PVST+ port states are discarding, learning, and forwarding.
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?
a. enable secret password
b. password password
c. username username secret secret
what is
c. username username secret secret
The login local command designates that the local username database is used to authenticate interfaces such as console or vty.
What are two switch characteristics that could help alleviate network congestion? (Choose two.)
a. fast internal switching
b. frame check sequence (FCS) check
c. large frame buffers
d. low port density
e. store-and-forward switching
what is
a. fast internal switching
c. large frame buffers
Switch characteristics that help alleviate network congestion include fast port speeds, fast internal switching, large frame buffers, and high port density.
In which memory location are the VLAN configurations of normal range VLANs stored on a Catalyst switch?
a. NVRAM
b. RAM
c. ROM
d. flash
what is
d. flash
When a normal range VLAN is created the configuration information of the VLAN is stored in flash in the vlan.dat file.
A network administrator is using the router-on-a-stick method to configure inter-VLAN routing. Switch port Gi1/1 is used to connect to the router. Which command should be entered to prepare this port for the task?
a. Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# spanning-tree vlan 1
b. Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# spanning-tree portfast
c. Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# switchport mode trunk
what is
c. Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# switchport mode trunk
With the router-on-a-stick method, the switch port that connects to the router must be configured as trunk mode. This can be done with the command Switch(config-if)# switchport mode trunk . The other options do not put the switch port into trunk mode.
After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?
a. each switch will analyze the sum of all ports costs to reach the root and use the path with the lowest cost
b. each switch will analyze the sum of the hops to reach the root and use the path with the fewest hops.
c. each is analyzed.
what is
a. each switch will analyze the sum of all ports costs to reach the root and use the path with the lowest cost
After the election of a root bridge has occurred, each switch will have to determine the best path to the root bridge from its location. The path is determined by summing the individual port costs along the path from each switch port to the root bridge.