Chapter 6: Network Layer

Question 1

What is the routing table C, L, S, D, O, R?

6.2.2.3

Answer 1

C - Identifies a directly CONNECTED network

L - Identifies a LINK LOCAL route

S - Identifies a STATIC route.

D - Identifies a EIGRP DYNAMIC route

O - OSPF dynamic route

R - RIP dynamic route

Question 2

What is the command line to output routing tables?

Answer 2

route print

netstat -r

Question 3

What is the Default route for IPv4?

Answer 3

0.0.0.0

Question 4

What is the Default route for IPv6?

Answer 4

::0

Question 5

What is the packet header for IPv4?

6.1.3.1

Answer 5

IP Header - Identifies the packet characteristics

Question 6

In a packet header what does VERSION mean?

6.1.3.1

Answer 6

VERSION - Contains a 4-bit binary value identifying the IP packet version. For IPv4 packets, this field is always set to 0100.

Question 7

In a packet header what does DIFFERENTIATED Services (DS) mean?
6.1.3.1

Answer 7

DIFFERENTIATED Services (DS) - Formerly called the Type of Service (ToS) field, the DS field is an 8-bit field used to determine the priority of each packet.

Question 8

In a packet header what does Time-to-Live (TTL) mean?

6.1.3.1

Answer 8

Time-to-Live (TTL) - Contains an 8-bit binary value that is used to limit the lifetime of a packet. It is specified in seconds but is commonly referred to as hop count.

Question 9

In a packet header what does PROTOCOL mean?

6.1.3.1

Answer 9

PROTOCOL - This 8-bit binary value indicates the data payload type that the packet is carrying, which enables the network layer to pass the data to the appropriate upper-layer protocol.

Question 10

In a packet header what does SOURCE IP mean?

6.1.3.1

Answer 10

Source IP Address - Contains a 32-bit binary value that represents the source IP address of the packet.

Question 11

In a packet header what does DESTINATION IP mean?

6.1.3.1

Answer 11

Destination IP Address - Contains a 32-bit binary value that represents the destination IP address of the packet.