Telecom Testout Study Guide

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?

Collisions

You have just connected four switches as shown in the exhibit. Assuming the default switch configuration, how can you force switch C to become the root bridge?

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 switch C with a lower priority value.

What does the ip address dhcp command allow you to do?

Configures the switch to obtain an IP address from a DHCP server.

Match the Cisco device password type on the left with its function on the right. VTY Console EXEC

Controls the ability to log on through a LAN or WAN interface configured on the device- VTY Controls the ability to switch configuration modes- EXEC Controls the ability to connect to the device using a direct connection- Console

Which of the following best describes the concept of a VLAN?

Devices on the same network logically grouped as if they were on separate networks.

You need to disable the FastEthernet 0/0 interface on a switch. Drag the command on the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required. conf t ifdown int fa0/1 shutdown speed auto show ip interface brief int disable int fa0/0

Enter global configuration mode- conf t Enter interface configuration mode- int fa0/0 Disable the interface- shutdown Verify the interface is disabled- show ip interface brief

The FastEthernet 0/0 interface on a switch is currently disabled. You need to enable it so a workstation can be connected to it. Drag the command on the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required. conf t int fa0/0 not shut int enable ifup shutdown show interface status int fa0/2

Enter global configuration mode- conf t Enter interface configuration mode- int fa0/0 Enable the interface- no shut Verify the interface is disabled- show interface status

You need to configure the FastEthernet 0/1 interface on a switch to automatically detect the appropriate link speed and duplex setting by negotiating with the device connected to the other end of the link. Drag the command of the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required. Conf t int fa0/0 interface status int fa0/1 duplex auto speed auto duplex full speed 100 show ip interface brief

Enter global configuration mode- conf t Enter interface configuration mode- int fa0/1 Set the speed of the interface- speed auto Set the duplex setting for the interface- duplex auto

Which of the following solutions would you implement to eliminate switching loops?

Spanning tree

You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one like goes down, an alternate path is available. Which feature should you switch support?

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?

Spanning tree

You manage a single subnet with three switches. the switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active path between any two switches?

Spanning tree

Which of the following statements accurately describes a VLAN ID?

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

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 have two switches connected together as shown in the following diagram. How many broadcast domains are there in the network shown?

2

Select the statement that best describes a broadcast storm.

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

Match each decimal value on the left with the corresponding hexadecimal value on the right. Not all decimal values have a corresponding hexadecimal value. 11 12 13 14 15 16 17

11- 17 B-11 D-13 F-15 C-12 10-16

You are configuring PuTTY to be used to access the CLI of a Cisco switch. Which of the following configuration values would prevent PuTTY from connecting? (Select Two.)

4600 baud Flow control = RTS/CTS

A router is configured with the login, no password condition for console access. Which of the following statements is true about access via a Telnet or SSH session?

Access is denied

Match the networking function or device on the left with the OSI model layer it is associated with on the right. Session ID number ASCII Port numbers Router Wireless access point HTTP Switch

Application- HTTP Presentation- ASCII Session- Session ID number Transport- Port numbers Network- Router Data Link- Switch Physical- Wireless access point

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

B

A switch running STP is classified as a backup bridge. What state is it in?

Blocking

Which of the following statements describe how VLANs affect broadcast traffic within an internetwork? (Select two.)

Broadcast traffic is transmitted only within a VLAN Devices on the same VLAN have the same subnet address.

Match each type of switch on the left with its corresponding characteristics on the right. Each switch type may be used once, more than once, or not at all. Unmanaged switch Managed switch

Commonly sold at retail stores- Unmanaged switch Provide port security features- Managed switch Support VLANs- Managed switch Provide very few configuration options- Unmanaged switch Can be configured over a network connection- Managed switch Can be confgured over a dedicated communication channel- Managed switch

Match each switch management method on left with its corresponding characteristics on the right. Each method may be used once, more than once, or not at all. In-band management Out-of-band management

Competes with normal network traffic for bandwidth - In-band management Uses a dedicated communication channel- Out-of-band management Must be encrypted to protect communications from sniffing - In-Band Management Does not compete with normal network traffic for bandwidth- Out-of-band management Affected by network outages- In-band management

Computers A and B are on the same VLAN and are separated by two switches, as shown in the exhibit. Computer A sends a frame to Computer B. Which of the following best describes the composition of the frame as it travels from A to 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.

Match the Etherchannel protocol on the left with its characteristics on the right. Each protocol may be used once, more than once, or not at all. Port Aggregation Protocol (PAgP) Link Aggregation Control Protocol (LACP)

Desirable mode places the port in a negotiating state- Port Aggregation Protocol Passive mode places the port into a passive negotiating state- Link Aggregation Control Protocol Active mode places the port in a negotiating state- Link aggregation Control Protocol Based on the 802.3ad standard - Link Aggregation Control Protocol Auto mode places the port into a passive negotiating state- Port Aggregation Protocol

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 the most likely cause?

Duplex mismatch

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?

Enable spanning tree on the switches

You have two switches connected as shown in the exhibit. You would like to configure rapid spanning tree on Switch A. On which ports would you use the portfast command?

Fa0/1 and Fa0/2

Which of the following are advantages of using the Spanning Tree Protocol (STP) in network segmented bridges? (Select three.)

Identifies the optimal path between network devices. Prevents switching loops from forming. Lets you provide redundancy by using more than one connection between devices, making your network more reliable.

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.

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 light and 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

Which of the following are reasons to configure VLANs on a switch as opposed to using switches without VLANs? (Select Two.)

Increased number of broadcast domains Increased security

A switch running STP is in the learning state. A message destined for a different network segment arrives at the switch

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

Switches running STP are in the process of exhanging BPDUs and redefining their roles. In what port state are the switches?

Listening

Which of the following features dynamically places switch ports in blocking or forwarding states?

Spanning tree

You are configuring a switch so that you can manage it via PuTTY from the same network segment as the switch. On the switch, you enter the following commands: switch#config terminal switch(config)#interface vlan 1 switch(config-if)#ip address 192.168.1.10 255.255.255.0 Will this configuration work?

No, the no shutdown command needs to be entered

Based on the diagram, which network line code technique is being used?

Non-Return-to-Zero

Match the description on the left with the appropriate networking signal line code on the right. A 0 is represented by sending a light pulse. A 1 is represented by sending no light pulse. Binary 0s and 1s are transmitted by sending voltage pulses, with the voltage returning to zero between pulses. Binary 1s are represented by positive voltage while 0s are represented by negative voltage. There is no zero voltage state between bits. The transition from one voltage level to another is used to represent binary data.

Non-Return-to-Zero - Binary 1s are represented by positive voltage while 0s are represented by negative voltage. There is no zero voltage state between bits. Manchester- The transition from one voltage level to another is used to represent binary data. Return-to-Zero Inverted - A 0 is represented by sending a light pulse. A 1 is represented by sending no light pulse. Return-to-Zero -Binary 0s and 1s are transmitted by sending voltage pulses, with the voltage returning to zero between pulses.

Which statements accurately describe the port states of both bridges and switches? (Select two.)

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

Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once. Transport Internet Network Interface Application

Presentation - Application Data Link- Network Interface Application- Application Session- Application Network- Internet Transport- Transport

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?

Rapid PVST+

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the same switch which is in VLAN 2. What should you configure so that the two devices can communicate?

Routing

A switch receives a frame addressed to the MAC address FF:FF:FF:FF:FF:FF. What will the switch do with the frame?

Send it out all ports except for the port it was received on

A virtual LAN can be created using which of the following?

Switch

You want to reduce collisions by creating separate collision domains and virtual LANs. Which of the following devices should you choose?

Switch

When configuring VLANs on a switch, what is used to identify VLAN membership of device?

Switch port

What problem does the Spanning Tree protocol prevent?

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

Which of the following are true regarding using multiple VLANs on a single switch? (Select two.)

The number of collision domains remains the same. The number of broadcast domains increases.

While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of oversized Ethernet frames being received on one interface. This interface is connected to a workstation located on the 2nd floor. What could be causing this to happen?

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

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the second switch also in VLAN 1. What should you configure to allow communication between these two devices through the switches?

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

Match each network signaling method on the left with its corresponding definition on the right. Each definition may be used once, more than once, or not at all. Baseband Broadband Frequency-division multiplexing De-multiplexing Manchester line code Bit rate Baud rate

Uses the entire network medium as a single transmission channel- Baseband Combines signals from multiple channels into a single channel- De-multiplexing Assigns different frequencies to different channels on the same network medium- Frequency-division multiplexing Divides the transmission medium into several channels- Broadband Measures the number of times a signal in a communication channel changes state.- Baud rate Measures the number of data bits transmitted in one second in a communication channel.- Bit rate

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?

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 RJ-45 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 implement

VLANs

You need to keep users in all other departments from accessing the servers used by the finance department. Which of the following technologies should you use to logically isolate the network?

VLANs

Which command would you use on a switch to enable management from a remote network?

ip default-gateway 192.168.10.185

You have implemented a network where each device provides shared files with all other devices on the network. What type of network do you have?

peer-to-peer

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 running-config interface show interface