Networking 2 > Module 13 ICMP (MT) > Flashcards

Module 13 ICMP (MT) Flashcards

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1
Q

What is the meaning of ICMP?

A

Internet Control Message Protocol

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2
Q

_____ provides feedback about issues related to the processing of IP packets under certain conditions

A

Internet Contorl Message Protocol

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3
Q

____ is the messageing protocol of IPv4.

A

ICMPv4

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4
Q

____ is the messaging protocol for IPv6 and includes additional functionalities

A

ICMPv6

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5
Q

T or F

ICMPv4 messages are not required and are often not allowed within a netwotk for security reason

A

Tru

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6
Q

______ message can be used to test the reachability of a host on an IP network

A

ICMP echo

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7
Q

An ICMP ______ message can be used to notify the source that a destination or service is unreachable

A

Destination Unreachable

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8
Q

The ICMP message will include a _____ indicating why the packet could not be delivered.

A

code

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9
Q

_____ also sends a time exceeded message.

A

ICMPv6

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10
Q

Instead of the IPv4 TTL field, _____ uses the IPv6 Hop Limit field to determine if the packet has expired.

A

ICMPv6

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11
Q

ICMPv6 has new features and improved functionality not found in ICMPv4, including four new protocols as part of the _____ Protocol (ND or NDP).

A

Neighbor Discovery

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12
Q

Messaging between an IPv6 router and an IPv6 device, including dynamic address allocation are as follows:

A
  • Router Solicitation (RS) message
  • Router Advertisement (RA) message
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13
Q

Messaging between IPv6 devices, including duplicate address detection and address resolution are as follows:

A
  • Neighbor Solicitation (NS) message
  • Neighbor Advertisement (NA) message
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14
Q

ICMPv6 ND also includes the _____, which has a similar function to the redirect message used in ICMPv4.

A

redirect message

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15
Q

_____ messages are sent by IPv6-enabled routers every 200 seconds to provide addressing information to IPv6-enabled hosts.

A

Router Advertisement

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16
Q

_____ message can include addressing information for the host such as the prefix, prefix length, DNS address, and domain name.

A

router advertisement

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17
Q

A host using ______ (SLAAC) will set its default gateway to the link-local address of the router that sent the RA.

A

Stateless Address Autoconfiguration

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18
Q

What is the meaning of RA?

A

Router Advertisement

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19
Q

What is the meaning of RS?

A

Router Solicitation

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20
Q

An IPv6-enabled router will also send out an RA message in response to an ____ message

A

RS

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21
Q

A device assigned a global IPv6 unicast or link-local unicast address, may perform _____ (DAD) to ensure that the IPv6 address is unique.

A

duplicate address detection

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22
Q

To check the uniqueness of an address, the device will send an ____ message with its own IPv6 address as the targeted IPv6 address.

A

Neighbor Solicitation

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23
Q

_____is not required, but RFC 4861 recommends that DAD is performed on unicast addresses.

24
Q

To determine the MAC address for the destination, the device will send an ____ message to the solicited node address

25
What is DAD?
duplicate address detection
26
The message will include the ____ . The device that has the targeted IPv6 address will respond with an NA message containing its Ethernet MAC address.
known (targeted) IPv6 address
27
The ____ command is an IPv4 and IPv6 testing utility that uses ICMP echo request and echo reply messages to test connectivity between hosts and provides a summary that includes the success rate and average round-trip time to the destination.
ping
28
If a reply is not received within the timeout, ____ provides a message indicating that a response was not received.
ping
29
It is common for the first ping to ____ if address resolution (ARP or ND) needs to be performed before sending the ICMP Echo Request.
timeout
30
What is the local loopback address for IPv4?
127.0.0.1
31
What is the local loopback address for IPv6?
::1
32
A response from 127.0.0.1 for IPv4, or ::1 for IPv6, indicates that IP is ____
properly installed on the host.
33
An error message indicates that TCP/IP is ____
not operational on the host.
34
The ___ command can be used to test the ability of a host to communicate on the local network. 
ping
35
What is the common IP address that is getting ping-ed?
default gateway
36
A successful ping to the ____ indicates that the host and the router interface serving as the default gateway are both operational on the local network.
default gateway
37
If the ____ address does not respond, a ping can be sent to the IP address of another host on the local network that is known to be operational.
default gateway
38
____ can also be used to test the ability of a local host to communicate across an internetwork.
Ping
39
A successful ____ across the internetwork confirms communication on the local network.
ping 
40
T or F. can a local host ping a host on a remote network?
True
41
Many network administrators limit or prohibit the entry of ICMP messages therefore, the lack of a ping response could be due to ____
security restrictions
42
____) is a utility that is used to test the path between two hosts and provide a list of hops that were successfully reached along that path
Traceroute (tracert
43
____ provides round-trip time for each hop along the path and indicates if a hop fails to respond.
Traceroute
44
An ____ is used to indicate a lost or unreplied packet.
asterisk (*)
45
____ makes use of a function of the TTL field in IPv4 and the Hop Limit field in IPv6 in the Layer 3 headers, along with the ICMP Time Exceeded message.
Traceroute
46
The first message sent from traceroute will have a TTL field value of ___.
1
47
T or F Since the first message after using tracert will have a TTL field value of 1. This may cause the TTL to time out at the first router.
True
48
T or F Traceroute then progressively increments the TTL field (2, 3, 4...) for each sequence of messages.
True
49
T or F Since traceroute increment the TTL field, this provides the trace with the address of each hop as the packets time out further down the path.
True
50
T or F The TTL field continues to be decreased until the destination is reached, or it is incremented to a predefined maximum.
false. increased
51
The purpose of ____ is to provide feedback about issues related to the processing of IP packets under certain conditions
ICMP messages
52
The ICMP messages common to both ICMPv4 and ICMPv6 are: ____
Host reachability, Destination or Service Unreachable, and Time exceeded
53
The messages between an IPv6 router and an IPv6 device including dynamic address allocation include ___
RS and RA
54
The messages between IPv6 devices include the redirect (similar to IPv4), ____
NS and NA.
55
___(used by IPv4 and IPv6) uses ICMP echo request and echo reply messages to test connectivity between hosts
Ping
56
____ can be used to test the internal configuration of IPv4 or IPv6 on the local host. 
Ping
57
___ (tracert) generates a list of hops that were successfully reached along the path
Traceroute
Networking 2
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