Weekly Online Exam #6

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, which switch will become the root bridge? -A -B -C -D

B

Which of the following routing protocols is used by routers on the internet for learning and sharing routes? -RIP -EIGRP -OSPF -BGP -IS-IS

BGP

Under which of the following circumstances might you implement BGP on your company network and share routes with Internet routers? -If the network is connected to the internet using multiple ISPs. -If the network is connected to the internet using public addressing. -If the network has over 15 hops. -If the network has over 15 areas and uses IPv6.

If the network is connected to the internet using multiple ISPs.

You need to configure spanning tree on a Cisco switch. You'd like to use a protocol that conforms to the 802.1w standards. Which protocol should you use? -EtherChannel -Rapid PVST+ -PortFast -BPDU guard

Rapid PVST+

Which of the following benefits apply only to creating VLANs with switches and not to segmenting the network with regular switches? -You can create multiple broadcast domains -You can segment the network based on physical location -You can create multiple collision domains -You can provide guaranteed bandwidth between two devices

You can create multiple broadcast domains

The network board in a workstation is currently configured as follows: -Network speed = Auto -Duplexing = Auto The workstation is experiencing poor network performance, and you suspect that the network board is not correctly detecting the network speed and duplex settings. Upon investigation, you find that it is running at 10 Mbps half-duplex. you know that your network switch is capable of much faster throughput. To fix this issue, you decide to manually configure these settings on the workstation. Before you do so, you need to verify the configuration of the switch port that the workstation is connected to. Given that it is a Cisco switch, which commands can be used on the switch to show a list of all switch ports and their current settings? (Select two) -show interface capabilities -show interface switchport -show interface -show interface ethernet counters -show running-config interface

-show interface -show running-config interface

You have two switches connected as shown in the following diagram. How many broadcast domains are in the network shown? (Two switch with two PC each) -0 -1 -2 -3 -4 -5

2

Select the statement that best describes a broadcast storm. -A broadcast storm occurs when the amount of electrical interference on a cable exceeds acceptable levels, broadcasting a storm of noise and preventing accurate data transfer. -A broadcast storm occurs when there are so many boradcast messages on the network that they approach or exceed the network badwidth. -A broadcast storm occurs when the level of TCP/IP overwhelm a gateway. -A broadcast storm occurs when a network server loses its connection to the network, and the disconnected cable sends feedback messages that overwhelm the network cable capacity.

A broadcast storm occurs when there are so many broadcast messages on the network that they approach or exceed the network bandwidth.

Which of the following is a characteristic of static routing when compared to dynamic routing? -All routes must be manually updated on the router. -Routers use the hop count to identify the distance to a destination network. -Routers can only use static routing when not connected to the internet. -Routers send packets for destination networks to the next hop router.

All routes must be manually updated on the router.

Which of the following routing protocols uses paths, rules, and policies instead of a metric for making routing decisions? -OSPF -IS-IS -EIGRP -BGP -RIP

BGP

A switch running STP is classified as a backup bridge. What state is it in? -Listening -Disabled -Learning -Forwarding -Blocking

Blocking

You manage a network with a single switch. On each switch port, a hub connects multiple devices to the switch. Which condition are you most likely to experience on the network? -Interface -Attenuation -Echo -Collisions -Crosstalk

Collisions

Computers A and B are on the same VLAN and are separated by two switches, as shown in the exhibit. Computer A sends a Fram to Computer B. Which of the following best describes the composition of the frame as it travels from A to B? -Computer A appends a VLAN ID to the frame. It travels from switch to switch and arrives at Computer B where it removes the VLAN ID. -Computer A sends a normal frame. The first switch appends a VLAN ID to the frame. The second switch removes the VLAN ID before forwarding it to Computer B. -Computer A sends a normal frame. The first switch appends a VLAN ID to the frame. The VLAN ID remains on the same frame through the second switch up to Computer B. -Computer A sends a normal frame. The first switch forwards the frame to the second switch, where the VLAN ID is appended to the frame and forwarded to Computer B.

Computer A sends a normal frame. The first switch appends a VLAN ID to the frame. The second switch removes the VLAN ID before forwarding it to Computer B.

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, how can your force Switch C to become a root bridge? -Configure a priority number of 4096 for switch C -Remove link cables 1 and 6 from the configuration -Configure a priority number of 61440 for switch C -Remove link cable 6 from the configuration -Remove link cable 1 from the configuration

Configure a priority number of 4096 for switch C

You have three switches configured as shown in the Exhibit. How can you guarantee that switch C becomes the root bridge? -Configure Fa0/1 and Fa0/2 on switch C with a higher cost value -Configure Fa0/1 and Fa0/2 on switch C with a lower cost value -Configure switch C with a higher priority value -Configure Fa0/1 and Fa0/2 on switch C with a lower port priority -Configure switch C with a lower priority value -Configure Fa0/1 and Fa0/2 on switch C with a higher port priority

Configure switch C with a lower priority value

You have a network configured to use the OSPF routing protocol. Which of the following describes the state when all OSPF router have learned about all other routes in the network? -Classful -Link State -Convergence -Distance Vector -VLSM

Convergence

Match the Etherchannel protocol on the left with its characteristics on the right. (PAgP) / (LACP) Desirable mode places the port in a negotiating state = Based on the 802.3ad standard = Passive mode places port into a passive negotiating state = Auto mode places the port into a passive negotiating state = Active mode places the port in a negotiating state =

Desirable mode places the port in a negotiating state = PAgP Based on the 802.3ad standard = LACP Passive mode places port into a passive negotiating state = LACP Auto mode places the port into a passive negotiating state =PAgP Active mode places the port in a negotiating state = LACP

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. There is no default route configured on the router. The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet? -Drop the packet. -Send the packet out both of its directly-connected networks as a broadcast frame. -Hold the packet in cache until a matching route is learned or configured. -Send the packet to both networks 192.168.3.0 and 192.168.4.0 and to the next hop router.

Drop the packet

A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other users. Which of the following conditions is most likely the cause? -Switching loop -Broadcast storm -Duplex mismatch -Incorrect VLAN

Duplex mismatch

Which of the following routing protocols is classified as a hybrid routing protocol? -RIP -OSPF -IS-IS -EIGRP

EIGRP

You manage a network with multiple switches. You find that your switches are experiencing heavy broadcast storms. Which of the following will help reduce the effects of a broadcast storm? -Configure each switch with a single trunk port. -Manually set the speed for each switch port. -Enable spanning tree on the switches -Disable auto-duplex detection

Enable spanning tree on the switches

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The router is also configured with a static route of 0.0.0.0 with a mask of 0.0.0.0. The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet? -Forward the packet to the next hop router specified by the route to network 0.0.0.0. -Send the packet out both of its directly connected network to the next hop router. -Send the packet out both of its directly connected networks as a broadcast frame -Drop the packet.

Forward the packet to the next hop router specified by the route to network 0.0.0.0.

You have a private network connected to the internet. Your routers will not share routing information about your private network with internet routers. Which of the following best describes the type of routing protocol you would use? -Link State -Distance Vector -Static -Dynamic -IGP -BGP

IGP

Which statements accurately describe the port states of both bridges and switches? (Select two) -In the learning state, the MAC address table cannot be populated because the port is blocked. -In the learning state, the MAC address table can be populated, but frames are not forwarded. -In the learning state, all ports are in a forwarding state. -Ports in a blocked state still receive BPDUs. -Ports in a blocked state cannot receive BPDUs.

In the learning state, the MAC address table can be populated, but frames are not forwarded. Ports in a blocked state still receive BPDUs.

You manage a local area network with several switches. A new employee has started today so you connect her workstation to a switch port. After connecting the workstation, you find that the workstation cannot get an IP address from the DHCP server. You check the link and status lights and see that the connection is working properly. A ping to the loopback address on the workstation succeeds. No other computers seem to have the problem. Which of the following is the most likely cause of the problem? -Incorrect VLAN assignment -Half-duplex setting on the switch and workstation -Incorrect default gateway setting -Switching loop

Incorrect VLAN assignment

A switch running STP is in the listening state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do? -It does not record address or segment information. It does not forward the message. -It places the source address and segment in its database, but does not forward the message. -It does not record address or segment information. However, the message is forwarded. -It places the source address and segment in its database and forwards the message.

It does not record address or segment information. It does not forward the message.

A switch is running STP is in the learning state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do? -It places the source address and segment in its database and forwards the message. -It does not record address or segment information. It does not forward the message. -It uses the source MAC address and network segment information to build its bridge database, but does not forward the message. -It does not record address or segment information. However, the message is forwarded.

It uses the source MAC address and network segment information to build its bridge database, but does not forward the message.

Switches running the STP are in the process of exchanging BPDUs and defining their roles. In what state are the switches? -Forwarding -Disabled -Learning -Blocking -Listening

Listening

Which of the following tasks do routers perform? (Select two) -Identify devices through hardware addresses -Maintain information about paths through an inter network -Control access to the transmission media -Route data based on hardware device addresses. -Multiplex signals onto the same transmission media. -Route data based on logical network addresses.

Maintain information about paths through an inter network Route data based on logical network addresses.

When multiple routes to a destination exist, what is used to select the best possible route? -Distance Vector -Autonomous system number -Metric -Exterior Gateway protocol

Metric

Which of the following routing protocols divides the network into areas, with all networks required to have an area 0 (area 0 identifying the backbone area)? -IS-IS -OSPF -RIP -EIGRP

OSPF

Which of the following routing uses relative link cost as the metric? -BGP -RIP -OSPF -EIGRP

OSPF

Which of the following best describes OSPF? -OSPF is a classless distance vector routing protocol -OSPF is a classless link state routing protocol -OSPF is a classful link state routing protocol -OSPF is a classful vector routing protocol

OSPF is a classless link state routing protocol

What are the main differences between the OSPF and IS-IS routing protocols? -OSPF is an IGP routing protocol, while IS-IS is a BGP protocol -OSPF is a link state protocol, while IS-IS is not -OSPF requires an area 0, while IS-IS does not -OSPF is a classful protocol, while IS-IS is a classless protocol

OSPF requires an area 0, while IS-IS does not

Which of the following protocols has a limit of 15 hops between any two networks? -BGP -RIP -IS-IS -ISPF -EIGRP

RIP

Which of the following statements about RIP is true? -RIP is the routing protocol used on the internet -RIP is suitable for large networks -RIP is a link state routing protocol -RIP uses hop counts as the cost metric

RIP uses hop counts as the cost metric

Which fo the following features dynamically places switch ports in blocking or forwarding state? -Poe -Trunking -Spanning Tree -Mirroring

Spanning Tree

Which of the following solutions would you implement to eliminate switching loops? -Spanning Tree -CSMA/CD -Auto-Duplex -Inter-VLAN routing

Spanning Tree

You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one link goes down, an alternate path is available. Which feature should your switch support? -PoE -Spanning Tree -OSPF -Trunking -Mirroring

Spanning Tree

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature allows the switches to pass VLAN traffic between the switches? -Bonding -PoE -Trunking -802.1x -Spanning Tree

Spanning Tree

Which of the following statements accurately describes a VLAN ID? -VLAN IDs identify the VLAN where the frame originated so the receiving host can reply. -Switches append a VLAN ID to the header of each frame to identify the virtual network it belongs to. -VLAN IDs identify both the source and destination VLAN. They are like network addresses, except they exist at the Data Link Layer. -VLAN IDs are defined at the Network layer and help route the frame through the switch fabric.

Switches append a VLAN ID to the header of each frame to identify the virtual network it belongs to.

Which problem does the spanning tree protocol prevent? -Packet blocking on backup bridge ports to allow switches to forward frames to all BPDUs. -Buffer overflows by defining source-quenching messages that a receiving device sends to the transmitting device. -Routing tables from becoming outdated by decreasing the convergence time on a network. -Switching loops from developing when redundant paths are implemented between switches.

Switching loops from developing when redundant paths are implemented between switches.

What information does the next hop entry in a routing table identify? -The first router in the path to the destination network. -The number of routers that the packet must go through to reach the destination network. -The last router in the path to the destination network. -A backup router that is used to forward packets addressed to unknown networks.

The first router in the path to the destination network.

While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of oversized Ethernet frames being recieved on one interface. This interface is connected to a workstation located on the second floor. What could cause this to happen? -Two hosts on the network have the same MAC address. -Collisions between two or more network hosts are occuring -The workstation's network board is jabbering -An incorrect subnet mask has been configured on the workstation. -A strong EMI emitter is near the cable that connects the workstation to the interface.

The workstation's network board is jabbering

When configuring VLANs on a switch, what type of switch ports are members of all VLANs defined on the switch? -Trunk ports -Any port not assigned to a VLAN -Gigabit and higher Ethernet Ports -Uplink ports -Each port can only be a member of a single VLAN

Trunk ports

You manage a network with two switches. The switches are connected through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch on VLAN 1 needs to communicate with a device on the second switch in VLAN 1. Which should you configure to allow communication between these two devices through the switches? -Layer 3 switching -Trunking -Spanning Tree -Bonding

Trunking

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature allows the switches to pass VLAN traffic between the switches? -Trunking -PoE -Spanning Tree -802.1x -Bonding

Trunking

You run a small network for your business that has a single router connected to the Internet and a single switch. You keep sensitive documents on a computer that you would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. What should you use for this situation? -Spanning tree -VPN -Port security -VLAN

VLAN

You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ45 ports connected to the switch. You want to allow visitors to plug into these ports to gain internet access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and internet access. Which feature should you use? -PoE -Spanning Tree -Port Authentication -VLANs

VLANs

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The next hop router for network 192.168.3.0 has changed. You need to make the change with the least amount of effort possible. What should you do? -Manually reconfigure the default route to point to the new next hop router. -Wait for convergence to take place -Stop and restart the RIP protocol on the router -Force RIP to perform an immediate update

Wait for convergence to take place