Lesson 8 Flashcards
Access link
A port on a switch that is used to link to an individual device. Most ports on switches are access links.
MAC table
The MAC table is a table created within a switch that maps device MAC addresses to switch ports. The MAC table is normally built after the switch is first turned on. Managed switches support static entries in the MAC table created by an administrator. As traffic is sent through a switch, the MAC address is recorded, and the port is noted in the table.
Managed switch
A configurable switch. It can be configured to create VLANs, to modify specific settings on individual ports, to send alerts via SNMP, and much more.
Switch
A network device that connects computers and keeps track of computers connected to the switch. A switch creates separate collision domains. A traditional switch is a layer 2 device that tracks the location of computers based on their MAC addresses. It uses this information to internally switch traffic to only the destination device instead of all devices connected to the switch. Advanced switches can also operate on layer 3.
Unmanaged switch
A basic Layer 2 switch. This will work simply by plugging it in and connecting it. It is not configurable.
Uplink port
An uplink port is used between two devices so that they may share in the communication process on the LAN. Uplink ports may be utilized by either hubs or switches.
VLAN
A VLAN is a LAN environment that is created on managed switches. VLANs offer improved security, increased performance, and the ability to add clients to a network segment regardless of their physical location.
True or false. Layer 2 switches create separate broadcast domains.
False
You are looking at a drawing of a 100 Mbps switch and want to identify what device is connected to the first port. How will the port be labelled?
F0
Which of the following is used to isolate hosts and segments, and to control broadcast traffic?
VLAN
Which of the following is a unique 48-bit address assigned to a network interface card (NIC)?
MAC address
True or false. A managed switch requires less administrative overhead than an unmanaged switch.
False
Which of the following is the reason to configure VLAN?
To reduce broadcast overhead on a network
A 100 Mbps switch is configured to combine five ports using LACP with full-duplex. What is the effective throughput at the uplink?
1000 Mbps
A switch has 48 ports. How many VLANs can you create with it?
24
Which of the following is also known as a logical network?
VLAN
What does a switch maintain to track the location of computers?
A MAC address table
Which of the following statements is true about VLAN?
It increases the number of interfaces available to the network.
Which of the following devices is required to connect two subnets that are created through VLAN?
Router
Your network includes computers connected via hubs. You want to reduce the number of collisions to the least number possible. What should you do?
You should replace the hubs with switches.
Which of the following is a computer networking device that is used to link network segments or network devices?
Switch
Which of the following is a basic reason to use VLAN?
To manage bandwidth allocation based on the type of use
You are the Network Administrator for an organization that has several departments including the marketing and finance departments. Recently financial data was leaked. Traffic from the computers in the financial department needs to be isolated with the least cost. Click on the type of network in the following figure which you will choose to accomplish the task.
VLAN
Which of the following defines the speed at which packets are transferred between modules in a modular switch?
Backplane speed
Mark works as a Network Administrator for TechMart Inc. He has a managed switch with servers connected to ports 1, 2, 3, and 4 . An attacker gains access to the server on port 2 and installs software for monitoring and recording communications on the network. Which of the following statements describes the impact to network security?
The attacker can access traffic to and from the server on port 2 only.
Which of the following have the same specifications as a VLAN?
Each correct answer represents a complete solution. Choose two.
Broadcast domain
IP subnet
Identify the devices and type of ports in the following figure.
Ethernet port (10 mbps) Router Switch Faster Ethernet ports (100 Mbps) Gigabit port (1000 Mbps)
A TCP/IP-based routed network is configured as shown in the figure below:
How many collision domains are there in the network?
6
Which of the following technologies or services can be used to isolate hosts and segments and to control broadcast traffic?
VLAN
Determine the differences between a hub and a switch.
Hubs: Share a single broadcast domain. Create a single collision domain. Data sent into one port goes out all other ports.
Switches: Share a single broadcast domain. Create multiple collision domains. Data sent into one port goes to it’s intended port.
Which of the following devices is used to create VLANs in a small network?
Switch
You work as a Network Administrator for Tech Perfect Inc. The company has a TCP/IP-based network. You configure two Virtual LANs (VLANs) on your network. A router is configured to connect the two VLANs. What will happen if the router fails?
Inter VLAN communication will be affected.
Which of the following devices works at the data link layer (layer 2) of the OSI model?
Switch
You work as a Network Administrator for Net World Inc. You are required to configure inter-VLAN routing for the company. Which of the following devices will you use to physically connect the computers for inter-VLAN routing?
Each correct answer represents a complete solution. Choose two.
Router
Switch
Which of the following is used by the layer 2 switch to direct packets?
MAC address
Mark works as a Network Administrator for TechMart Inc. He wants to configure computers in various locations as if they were all part of the same network. Which of the following will Mark set up to accomplish the task?
VLAN
Which of the following statements are true regarding VLAN?
Each correct answer represents a complete solution. Choose all that apply.
A router is required to connect two VLANs.
A switch is required to create a VLAN.
Which of the following is a digital networking communication method that groups all transmitted data regardless of the content, type, or structure into suitably sized blocks?
Packet switching
Which of the following devices are used for communication between the hosts of two different VLANs configured in a network?
Each correct answer represents a complete solution. Choose two.
Switch
Router
You work as a network administrator for McRoberts Inc. The company has a TCP/IP-based network. You install a new client computer. When you connect the computer to a hub, the activity LED of the NIC does not light up. You connect the computer to another hub, and the LED lights up. When you connect the computer to the first hub again, the activity LED of the NIC does not light again. What is the most likely cause?
The first hub’s port on which the computer is connected is faulty.
Which of the following is created to segment broadcast traffic and increase network performance?
VLAN
Which of the following can be used to configure a virtual area network (VLAN)?
Managed switches
Which of the following describes the methodology of implementing a telecommunication network where two network nodes establish a dedicated communication channel through the network before the nodes may communicate?
Circuit switching
Types of hub
Passive Hubs: Take incoming electrical signals on one port and pass them down the cable on their other ports.
Active hubs: Simply rebroadcast the incoming traffic
Switching hubs: Listen to each port and make records of attached NIC hardware addresses
Intelligent hubs: Hubs with advanced features.
