1A

Question 1

A switch is ______-_____ and utilizes Application Specific Integrated Circuits (ASICs) to help them make filtering decisions.

Answer 1

hardware based

Question 2

What does ASIC stand for?

Answer 2

Application Specific Integrated Circuits

Question 3

Switches may contain a few or hundreds of _______.

Answer 3

ports

Question 4

________ are used for workgroup connectivity and network segmentation and are a general connectivity component
(aggregation point) that connects local area network (LAN) components, such as computers, printers, and switches, together.

Answer 4

Switches

Question 5

A general connectivity component is also known as what?

Answer 5

Aggregation point

Question 6

Switches move frames of information at the ____ ____ Layer of the (OSI) model by reading the MAC address from the host’s network interface card.

Answer 6

Data Link

Question 7

What does OSI stand for?

Answer 7

Open Systems Interconnection

Question 8

While Layer 2 Ethernet switches operate at Data-Link Layer of the OSI model, _________ switches perform functions across multiple layers of the OSI model.

Answer 8

Multilayer

Question 9

The scope of this textbook is limited to discussing the Layer 2 switch. There are, however, switches that combine Layer 2 switching and
Layer 3 routing functions. They are known as _____ __ ______.

Answer 9

Layer 3 switches

Question 10

Remember, switching is always a Layer __ function, and routing is always a Layer 3 function.

Answer 10

2

Question 11

A switch is a device used in a computer network to ________ connect devices.

Answer 11

physically

Question 12

Multiple ______ can be connected to a switch to enable networked devices to communicate with each other.

Answer 12

cables

Question 13

Switches manage the flow of data across a network by doing what?

Answer 13

By only transmitting a received message to the device for
which the message was intended.

Question 14

Each networked device connected to a switch can be identified
using a 48-bit unique identifier called a ___ _______.

Answer 14

MAC address

Question 15

The MAC address allows the switch to regulate traffic flow. This maximizes _______, minimizes _______ required, and improves ______
efficiency.

Answer 15

Maximizes security, minimizes bandwidth required, and improves network efficiency.

Question 16

Because of these features, a switch is often considered more “intelligent” than a ________ ______.

Answer 16

network hub

Question 17

Hubs provide neither security nor identification of connected devices. This means that messages sent to hubs have to be transmitted out of _____ _____ of the hub.

Answer 17

every port

Question 18

Switches; however, break up the network into _____ _______.

Answer 18

collision domains

Question 19

Each port on a switch is a collision domain because the port does not share _________ with other devices.

Answer 19

bandwidth

Question 20

What does “LAN” stand for?

Answer 20

Local Area Network

Question 21

What is a collision domain?

Answer 21

When devices share the same bandwidth

Question 22

Ports are also sometimes referred to as?

Answer 22

Network interfaces

Question 23

Switches performance is based on what five things?

Answer 23

Hardware-based bridging (MAC), wire speed, low latency, low cost, and broadcast control

Question 24

By using ASICs, switches learn and form multiple internal connections to pass or filter traffic.

Answer 24

Hardware-based bridging (MAC)

Question 25

Can be configured to the media (cable) speed. As an example, if you have 100 Mbps Ethernet connections, you can set the speed to 100 Mbps.

Answer 25

Wire speed

Question 26

Indicates that the switch can receive, process, and apply an update in minimum time thereby resuming traffic flow quickly. In other words, switches are fast. They process data very quickly; there is little lag on the network.

Answer 26

Low Latency

Question 27

Relatively inexpensive when compared to the number of ports a single switch can have. We can use the phrase ‘____ ____ high port density’.

Answer 27

low cost

Question 28

Can segment a network into smaller broadcast domains if used with virtual Local Area Networks (VLANs). Without VLAN’s, broadcasts are not filtered until they get to a Layer 3 device.

Answer 28

Broadcast Control

Question 29

We identify the switch components into two broad categories - which are?

Answer 29

External components and internal components

Question 30

Switches analyze incoming frames to determine if the incoming data needs to be transmitted to another _______ of the network or ______ out all ports except the original incoming port.

Answer 30

segment (a port)
flooded (broadcast)

Question 31

What are the two switch external components?

Answer 31

Console Port and Network Interfaces

Question 32

All networking devices have a _____ _____ for initial configuration.

Answer 32

console port

Question 33

As the administrator, you will connect to the switch via a _____/____ cable.

Answer 33

console/rollover cable

Question 34

DoD policy states the console port must be _______ ________ to prevent unauthorized changes because this local access only requires physical presence.

Answer 34

password protected

Question 35

The following describes what external switch component?

Allows direct local access to configure a switch using a dumb terminal or a computer running terminal emulation software (hyper terminal or PuTTY) for initial configuring of a “blank” switch.

Answer 35

Console port

Question 36

Here is where end devices such as computers or printers are connected.

Answer 36

Network Interfaces

Question 37

Exactly how many network interfaces can there be on a switch?

Answer 37

The number of interfaces can vary and more can also be added through plug-in modules depending on the model.

Question 38

What external switch component can do the following?

Can be used test connectivity (Ping), which is useful for troubleshooting faulty networks.

Answer 38

network interfaces

Question 39

What does “ping” do?

Answer 39

test connectivity

Question 40

Remember, switches use MAC addresses to make
_____/____ decisions with Layer 2 Frames.

Answer 40

Forward/Filter

Question 41

Why would an administrator assign an IP address to a switch?

Answer 41

If the administrator assigns an IP (logical) address to the switch, switches can accept an incoming Telnet connection over any of its network interfaces. This connection is used for remote management of a switch (configuration changes). The IP address is only needed to establish the connection for logging into the switch for configuration changes only.

Question 42

What are the four minimum internal components required to make up a switch?

Answer 42

Flash memory, ROM, RAM and NVRAM

Question 43

What internal switch component is the following describing?

is where the operating system (OS) is saved. Every time that the switch boots up, the _____ ______ will be accessed to load the OS into the running memory.

Answer 43

Flash Memory

Question 44

What internal switch component is the following describing?

will contain information like the diagnostic and boot up routines, this is the burned in memory that cannot be accessed or changed.

Answer 44

ROM

Question 45

What internal switch component is the following describing?

is the running memory that the switch uses for all of it operations, when we make configuration changes on the switch it is stored here in a file called ‘running-configuration’.

Answer 45

RAM

Question 46

What internal component is the following describing?

is what we will access to save our startup configuration, along with other pieces of information that need long-term storage in the switch. The ‘startup-configuration’ file is loaded to the RAM upon boot up and becomes the running configuration with the entire configuration specific to that switch.

Answer 46

NVRAM