Question 1

An IP ____________________ is performed by sending a ping packet (ICMP Echo Request packet) to each host within a range and noting the responses.

Accepted Answer

host probe

Question 2

Using which of the following as well as some manipulation of the TTL value in the IP header, Traceroute results provide a list of routers along a path, as well as the round-trip latency time to each router?

Accepted Answer

A) ICMP Echo Requests 
B) ICMP paths 
C) ICMP metrics 
D) ICMP query messages 
A) ICMP Echo Requests 
B) ICMP paths 
C) ICMP metrics 
D) ICMP query messages A

Question 3

Briefly define the following codes, currently assigned to the ICMP Destination Unreachable type number: Code 2: Protocol Unreachable, Code 3:Port Unreachable, and Code 5: Source Route Failed.

Accepted Answer

Code 2: Protocol Unreachable: A host or router can send this error message to indicate that the protocol defined in the IP header cannot be processed.
Code 3:Port Unreachable: A host or router can send this reply to indicate that the sender does not support the process or application you are trying to reach.
Code 5: Source Route Failed: A router sends this ICMP reply to indicate that the router cannot use the strict or loose source routing path specified in the original packet.

Question 4

Which message type supports functionality for reachability utilities like Ping and Tracert; essential when installing, configuring, and troubleshooting IP networks?

Accepted Answer

A) ICMP Echo/Echo Reply 
B) ICMP Source Quench 
C) ICMP Time Exceeded 
D) ICMP Destination Unreachable 
A) ICMP Echo/Echo Reply 
B) ICMP Source Quench 
C) ICMP Time Exceeded 
D) ICMP Destination Unreachable

Question 5

ICMP Type ____________________ is used for Echo Reply packets.

Accepted Answer

The answer of ICMP Type ____________________ is used for Echo...

Question 6

Match each item with a statement below.
a.Network congestion
b.firewalking
c.ICMP query message
d.inverse mapping
e.ICMP Echo communication
f.overhead
g.reachability
h.throughput difference
i.restricting link
-the non-data bits or bytes required to move data from one location to another

Accepted Answer

The answer of Match each item with a statement below.
a.Network...

Question 7

Which RFC defines a method for discovering a Path MTU (PMTU) using ICMP?

Accepted Answer

A) RFC 1191 
B) RFC 1241 
C) RFC 1542 
D) RFC 1577 
A) RFC 1191 
B) RFC 1241 
C) RFC 1542 
D) RFC 1577

Question 8

Match each item with a statement below.
a.Network congestion
b.firewalking
c.ICMP query message
d.inverse mapping
e.ICMP Echo communication
f.overhead
g.reachability
h.throughput difference
i.restricting link
-a two-staged reconnaissance method involving an initial perimeter device discovery phase and subsequent inverse mapping of filtered devices

Accepted Answer

The answer of Match each item with a statement below.
a.Network...

Question 9

Describe some of the security issues for ICMPv6.

Accepted Answer

ICMPv6 has built-in security features th

Question 10

____________________ describes the concept of walking a firewall ACL or ruleset to determine what it filters, and how.

Accepted Answer

The answer of ____________________ describes the concept of walking a...

Question 11

Of which of the following ICMP replies are there two versions, which are: the standard version that simply states the packet had the Don't Fragment bit set when it reached a router that needed to fragment it, and the PMTU version that includes information about the restricting link?

Accepted Answer

A) Code 2: Protocol Unreachable 
B) Code 3: Port Unreachable 
C) Code 4: Fragmentation Needed and Don't Fragment Was Set 
D) Code 5: Source Route Failed 
A) Code 2: Protocol Unreachable 
B) Code 3: Port Unreachable 
C) Code 4: Fragmentation Needed and Don't Fragment Was Set 
D) Code 5: Source Route Failed

Question 12

Which of the following enables a source to learn the currently supported MTU across an entire path, without requiring fragmentation?

Accepted Answer

A) Firewalking 
B) Traceroute 
C) Pathping 
D) PMTU Discovery 
A) Firewalking 
B) Traceroute 
C) Pathping 
D) PMTU Discovery

Question 13

How does inverse mapping determine live targets on a network?

Accepted Answer

When a filtering device is detected betw

Question 14

A host or router can send which of the following error message to indicate that the protocol defined in the IP header cannot be processed?

Accepted Answer

A) Code 2: Protocol Unreachable 
B) Code 3:Port Unreachable 
C) Code 4: Fragmentation Needed and Don't Fragment Was Set 
D) Code 5: Source Route Failed 
A) Code 2: Protocol Unreachable 
B) Code 3:Port Unreachable 
C) Code 4: Fragmentation Needed and Don't Fragment Was Set 
D) Code 5: Source Route Failed

Question 15

Match each item with a statement below.
a.Network congestion
b.firewalking
c.ICMP query message
d.inverse mapping
e.ICMP Echo communication
f.overhead
g.reachability
h.throughput difference
i.restricting link
-a link that does not support forwarding based on the current packet format and configuration

Accepted Answer

The answer of Match each item with a statement below.
a.Network...

Question 16

Match each item with a statement below.
a.Network congestion
b.firewalking
c.ICMP query message
d.inverse mapping
e.ICMP Echo communication
f.overhead
g.reachability
h.throughput difference
i.restricting link
-an ICMP process whereby a host sends an Echo packet to another host on an internetwork

Accepted Answer

The answer of Match each item with a statement below.
a.Network...

Question 17

Which of the following ICMP Types is used for Echo Request packets?

Accepted Answer

A) ICMP Type 2 
B) ICMP Type 4 
C) ICMP Type 6 
D) ICMP Type 8 
A) ICMP Type 2 
B) ICMP Type 4 
C) ICMP Type 6 
D) ICMP Type 8

Question 18

If configured to do so, routers periodically send unsolicited ICMP Router Advertisements to which of the following all-hosts multicast address?

Accepted Answer

A) 224.0.0.1 
B) 255.255.0.0 
C) 224.255.0.1 
D) 255.224.0.1 
A) 224.0.0.1 
B) 255.255.0.0 
C) 224.255.0.1 
D) 255.224.0.1

Question 19

Which of the following may a router or host use as a way to indicate that it is becoming congested or overloaded?

Accepted Answer

A) Checksum 
B) Source Quench 
C) GMT 
D) PMTU 
A) Checksum 
B) Source Quench 
C) GMT 
D) PMTU

Question 20

What is firewalking?

Accepted Answer

This is a two-phase attack method, invol

An IP ____________________ is performed by sending a ping packet (ICMP Echo Request packet) to each host within a range and noting the responses.

Using which of the following as well as some manipulation of the TTL value in the IP header, Traceroute results provide a list of routers along a path, as well as the round-trip latency time to each router?

Briefly define the following codes, currently assigned to the ICMP Destination Unreachable type number: Code 2: Protocol Unreachable, Code 3:Port Unreachable, and Code 5: Source Route Failed.

Which message type supports functionality for reachability utilities like Ping and Tracert; essential when installing, configuring, and troubleshooting IP networks?

ICMP Type ____________________ is used for Echo Reply packets.

Match each item with a statement below. a.Network congestion b.firewalking c.ICMP query message d.inverse mapping e.ICMP Echo communication f.overhead g.reachability h.throughput difference i.restricting link -the non-data bits or bytes required to move data from one location to another

Which RFC defines a method for discovering a Path MTU (PMTU) using ICMP?

Describe some of the security issues for ICMPv6.

____________________ describes the concept of walking a firewall ACL or ruleset to determine what it filters, and how.

Of which of the following ICMP replies are there two versions, which are: the standard version that simply states the packet had the Don't Fragment bit set when it reached a router that needed to fragment it, and the PMTU version that includes information about the restricting link?

Which of the following enables a source to learn the currently supported MTU across an entire path, without requiring fragmentation?

How does inverse mapping determine live targets on a network?

A host or router can send which of the following error message to indicate that the protocol defined in the IP header cannot be processed?

Match each item with a statement below. a.Network congestion b.firewalking c.ICMP query message d.inverse mapping e.ICMP Echo communication f.overhead g.reachability h.throughput difference i.restricting link -an ICMP process whereby a host sends an Echo packet to another host on an internetwork

Which of the following ICMP Types is used for Echo Request packets?

If configured to do so, routers periodically send unsolicited ICMP Router Advertisements to which of the following all-hosts multicast address?

Which of the following may a router or host use as a way to indicate that it is becoming congested or overloaded?

What is firewalking?

Introducing Tcp/Ip

Ip Addressing and Related Topics

Basic Ip Packet Structures: Headers and Payloads

Data Link and Network Layer Protocols in Tcp/Ip

Neighbors Discovery in Ipv6

Ip Address Auto Configuration

Name Resolution on Ip Networks

Tcp/ip Transport Layer Protocols

Transitioning From Ipv4 to Ipv6: Interoperation

Deploying Ipv6

Securing Tcp/Ip Environments

Available in Mindtap Only: Troubleshooting Tcp/Ip

Available in Mindtap Only: Tcp/Ip Best Practices and Practical Applications

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Exam 5: Internet Control Message Protocol

An IP ____________________ is performed by sending a ping packet (ICMP Echo Request packet) to each host within a range and noting the responses.

Using which of the following as well as some manipulation of the TTL value in the IP header, Traceroute results provide a list of routers along a path, as well as the round-trip latency time to each router?

Briefly define the following codes, currently assigned to the ICMP Destination Unreachable type number: Code 2: Protocol Unreachable, Code 3:Port Unreachable, and Code 5: Source Route Failed.

Which message type supports functionality for reachability utilities like Ping and Tracert; essential when installing, configuring, and troubleshooting IP networks?

ICMP Type ____________________ is used for Echo Reply packets.

Match each item with a statement below. a.Network congestion b.firewalking c.ICMP query message d.inverse mapping e.ICMP Echo communication f.overhead g.reachability h.throughput difference i.restricting link -the non-data bits or bytes required to move data from one location to another

Which RFC defines a method for discovering a Path MTU (PMTU) using ICMP?

Describe some of the security issues for ICMPv6.

____________________ describes the concept of walking a firewall ACL or ruleset to determine what it filters, and how.

Of which of the following ICMP replies are there two versions, which are: the standard version that simply states the packet had the Don't Fragment bit set when it reached a router that needed to fragment it, and the PMTU version that includes information about the restricting link?

Which of the following enables a source to learn the currently supported MTU across an entire path, without requiring fragmentation?

How does inverse mapping determine live targets on a network?

A host or router can send which of the following error message to indicate that the protocol defined in the IP header cannot be processed?

Match each item with a statement below. a.Network congestion b.firewalking c.ICMP query message d.inverse mapping e.ICMP Echo communication f.overhead g.reachability h.throughput difference i.restricting link -an ICMP process whereby a host sends an Echo packet to another host on an internetwork

Which of the following ICMP Types is used for Echo Request packets?

If configured to do so, routers periodically send unsolicited ICMP Router Advertisements to which of the following all-hosts multicast address?

Which of the following may a router or host use as a way to indicate that it is becoming congested or overloaded?

What is firewalking?

Introducing Tcp/Ip

Ip Addressing and Related Topics

Basic Ip Packet Structures: Headers and Payloads

Data Link and Network Layer Protocols in Tcp/Ip

Neighbors Discovery in Ipv6

Ip Address Auto Configuration

Name Resolution on Ip Networks

Tcp/ip Transport Layer Protocols

Transitioning From Ipv4 to Ipv6: Interoperation

Deploying Ipv6

Securing Tcp/Ip Environments

Available in Mindtap Only: Troubleshooting Tcp/Ip

Available in Mindtap Only: Tcp/Ip Best Practices and Practical Applications

Filters