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Networking Revamped > Module 7 - Ethernet Switching > Flashcards

Module 7 - Ethernet Switching Flashcards

1
Q

Which part of an Ethernet Frame uses a pad to increase the frame field to at least 64 bytes?

EtherType
Preamble
Start of Frame Delimiter
Data field

A

Data field

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2
Q

Which part of an Ethernet frame detects errors in the frame?

Preamble
Start of Frame Delimiter
Frame Check Sequence

A

Frame Check Sequence

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2
Q

Which part of an Ethernet Frame describes the higher-layer protocol that is encapsulated?

EtherType
Preamble
Start of Frame Delimiter
Frame Check Sequence

A

EtherType

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3
Q

Which part of an Ethernet Frame notifies the receiver to get ready for a new frame?

Start of Frame Delimiter
Frame Check Sequence
Preamble
Data field

A

Preamble

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4
Q

Which data link sublayer controls the network interface through software drivers?

MAC
LLC

A

LLC

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5
Q

What is a function of the MAC sublayer? (Choose three.)

controls access to the media
checks for errors in received bits
uses CSMA/CD or CSMA/CA to support Ethernet technology
communicates between software at the upper layers and the device hardware at the lower layers
allows multiple Layer 3 protocols to use the same network interface and media

A

controls access to the media
checks for errors in received bits
uses CSMA/CD or CSMA/CA to support Ethernet technology

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5
Q

Which data link sublayer works with the upper layers to add application information for delivery of data to higher level protocols?

MAC
LLC

A

LLC

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6
Q

What are two methods for switching data between ports on a switch? (Choose two.)

cut-off switching
cut-through switching
store-and-forward switching
store-and-supply switching
store-and-restore switching

A

cut-through switching
store-and-forward switching

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7
Q

Which two types of memory buffering techniques are used by switches? (Choose two.)

long-term memory buffering
port-based memory buffering
shared memory buffering
short-term memory buffering

A

port-based memory buffering
shared memory buffering

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7
Q

Which switching method can be implemented using fast-forward switching or fragment-free switching?

cut-off switching
cut-through switching
store-and-forward switching
store-and-restore switching

A

cut-through switching

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8
Q

What feature automatically negotiates the best speed and duplex setting between interconnecting devices?

auto-MDIX
autobots
autonegotiation
autotune

A

autonegotiation

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9
Q

What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?

It will discard the frame.
It will forward the frame to the next host.
It will remove the frame from the media.
It will strip off the data-link frame to check the destination IP address.

A

It will discard the frame.

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10
Q

Which two functions or operations are performed by the MAC sublayer? (Choose two.)

It is responsible for Media Access Control.
It performs the function of NIC driver software.
It adds a header and trailer to form an OSI Layer 2 PDU.
It handles communication between upper and lower layers.
It adds control information to network protocol layer data.

A
  • It is responsible for Media Access Control.
  • It adds a header and trailer to form an OSI Layer 2 PDU.
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10
Q

What is auto-MDIX?

a type of Cisco switch
an Ethernet connector type
a type of port on a Cisco switch
a feature that detects Ethernet cable type

A

a feature that detects Ethernet cable type

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10
Q

What type of address is 01-00-5E-0A-00-02?

an address that reaches every host inside a local subnet
an address that reaches one specific host
an address that reaches every host in the network
an address that reaches a specific group of hosts

A

an address that reaches a specific group of hosts

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11
Q

What happens to runt frames received by a Cisco Ethernet switch?

The frame is dropped.
The frame is returned to the originating network device.
The frame is broadcast to all other devices on the same network.
The frame is sent to the default gateway.

A

The frame is dropped.

11
Q

What addressing information is recorded by a switch to build its MAC address table?

the destination Layer 3 address of incoming packets
the destination Layer 2 address of outgoing frames
the source Layer 3 address of outgoing packets
the source Layer 2 address of incoming frames

A

the source Layer 2 address of incoming frames

12
Q

What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.)

56 bytes
64 bytes
128 bytes
1024 bytes
1518 bytes

A

64 bytes
1518 bytes

13
Q

Which two characteristics describe Ethernet technology? (Choose two.)

It is supported by IEEE 802.3 standards.
It is supported by IEEE 802.5 standards.
It typically uses an average of 16 Mb/s for data transfer rates.
It uses the CSMA/CD access control method.
It uses a ring topology.

A

It is supported by IEEE 802.3 standards.
It uses the CSMA/CD access control method.

14
Q

What statement describes a characteristic of MAC addresses?

They must be globally unique.
They are only routable within the private network.
They are added as part of a Layer 3 PDU.
They have a 32-bit binary value.

A

They must be globally unique.

15
Q

What is the special value assigned to the first 24 bits of a multicast MAC address?

01-5E-00
FF-00-5E
FF-FF-FF
01-00-5E

A

01-00-5E

16
Q

Which function or operation is performed by the LLC sublayer?

It performs data encapsulation.
It communicates with upper protocol layers.
It is responsible for media access control.
It adds a header and trailer to a packet to form an OSI Layer 2 PDU.

A

It communicates with upper protocol layers.

16
Q

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?

repeater
hub
switch
router

A

switch

17
Q

Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table?

hub
router
switch
modem

A

switch

18
Q

Which statement is true about MAC addresses?

MAC addresses are implemented by software.
A NIC only needs a MAC address if connected to a WAN.
The first three bytes are used by the vendor assigned OUI.
The ISO is responsible for MAC addresses regulations.

A

The first three bytes are used by the vendor assigned OUI.

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