Chapter 5-6 Quiz

MAC and LLC

2 sublayers of Ethernet at data link layer

MTU (maximum transmission unit)

A router may have to fragment a packet when forwarding it from one medium to another medium that has a smaller

Cut-through switching

A switching method that begins the forwarding process as soon as enough information has been received to make a forwarding decision

Metric

A value that is used by a routing protocol to identify the best route to insert into a routing table

Hostname

A way to identify a networking device

NAT

Acronym used to define the process that allows multiple devices to share a single routable IP address

multicast address

Address that reaches a specific group of hosts

FF-FF-FF-FF-FF-FF

Address used as destination address on a broadcast Ethernet frame

Data link and physical

At which layers of the OSI Model Does Ethernet function?

63

Decimal equivalent of hexadecimal value of 3F

All devices in the L2 broadcast domain

Devices on network that will hear ARP request

Flash

During the boot process, where will the router bootstrap program look for the IOS image by default?

A

Express binary number 0000 0010 in hexidecimal

Frame check sequence

Field in an Ethernet frame used for error detection

The default gateway address is used to forward packets originating from the switch to remove networks

Within a production network, what is the purpose of configuring a switch with a default gateway address?

Frame deliminating, addressing, error detection

Primary functions associated with data encapsulation at Ethernet MAC sublayer

Resolve IPv4 addresses to MAC addresses

Primary purpose of ARP?

Routing

Process of sending packets to hosts on a remote network

ARP (Address Resolution Protocol)

Process that is used to find a Layer 2 address when a Layer 3 address is known

auto-MDIX

a feature that detects the type of cable, and configures the interfaces to allow the connection

MTU (maximum transmission unit)

The largest PDU that is supported

64 bytes

The minimum Ethernet frame is ?

Administrative distance

The trustworthiness of a route

Providing end devices with a unique network identifier Directing data packets to destination hosts on other networks

What are two functions that are provided by the network layer?

All devices stop transmitting and try again later

What happens when data collision occurs on an Ethernet bus?

Multicast Addresses

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

64 bytes - 1518 bytes

What's minimum and maximum Ethernet frame size defined by IEEE 802.3?

store-and-forward

When a switch configuration includes a user-defined error threshold on per port basis, to which switching method will the switch revert when the error threshold is reached?

CRC in the trailer (cyclic redundancy check)

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?

Flow Label

When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets I. The same conversation?

127.0.0.1

Which IPv4 address can a host use to ping the loopback interface?

It sends the frame to all ports except the port on which it received the frame

Which action is taken by a Layer 2 switch when it receives a Layer 2 broadcast frame?

Ctrl- C

Which key combination allows a user to abort setup mode?

Network portion

Which portion of the network layer address does a router use to forward packets ?

Media Access Control and it adds a header and trailer to form an OSI Layer 2 PDU

Which two functions or operations are performed by the MAC sublayer?

Time-to-Live

Which value, that is contained in a IPv4 header field, is decremented by each router that receives a packet?

Size

With shared memory buffering, the number of frames stored in the buffer is restricted only by the ______ of the entire memory buffer and not limited to a single port buffer

Time-to-Live

a value that limits the the lifetime of a packet

RAM

volatile memory that stores the running configuration and tables as generated by the device

Connectionless

A connection that does not have to be establish to send data

fragment-free switching

A cut through switching method that begins to forward data after receipt of the first 64 bytes of a frame

Default Gateway

A device that allows the devices on one network to communicate with devices on other networks

Shared memory buffing

A layer 2 switch is used to switch incoming frames from a 1000Base-T port connected to a 100Base-T network. Which method of memory buffing would work best for this task?

Resolving IPv4 addresses to MAC addresses Maintaining a table of mappings

Functions provided by ARP process

The MTU is passed to the network layer by the data link layer

How does the network layer use the MTU value?

Metric

If there are two or more possible routes to the same destination, the metric is used to determine which route is used in the routing table

Physical address

Layer 2 address that allows NICS to communicate with each other

Logical address

Layer 3 address that identifies both the network and the specific host on that network

Broadcast

Message that is sent from a single sender to all recipients

Frame

Name given to Ethernet MAC sublayer PDU

Flash

Non-volatile memory that stores the IOS and other system files

Broadcasting MAC address

On Ethernet networks, the hexadecimal address FF-FF-FF-FF-FF-FF represents the ________.

Out of band configuration

Requires a direct physical connection to the device to be configured

802.3

Standard that specifies ethernet MAC sublayer functionality in a computer NIC

store-and-forward

Switching method that receives the entire frame before forwarding

MAC

The Ethernet ________ sublayer is responsible for communicating directly with the physical layer

ROM

nonvolatile memory that contains a limited IOS and instructions for the router

NVRAM

nonvolatile memory that stores the startup configuration of a device

in-band configuration

requires the establishment of a network connection to the device to be configured

next-hop

the destination router indicated by the outgoing interface entry in the routing table