JA Net+ Ch6

Question 1

What would application programmers need to write if they didn’t use the Internet layer? (Protocols) Chapter 6 Page 189

Answer 1

Hooks

Question 2

Internet Protocol Chapter 6 Page 189

Answer 2

IP is essentially the Internet layer. IP looks at each packet’s destination address. Then, using a routing table, it decides where the packet is to be sent next, choosing it’s best path.

Question 3

T/F

The protocols of Network access layer at the bottom of the DoD model can only deal with local networks? Chapter 6 Page 189

Answer 3

True.

Question 4

What does the ICMP acronym stand for? Chapter 6 Page 190

Answer 4

Internet Control Message Protocol.

Question 5

What is ICMP? Chapter 6 Page 190

Answer 5

ICMP is a management protocol and messaging service provider for your IP. It’s messages are carried as IP packets.

Question 6

Buffer full (ICMP) Chapter 6 Page 190

Answer 6

If a router’s memory buffer for receiving incoming datagrams is full, it will use ICMP to send out this message until the congestion abates.

Question 7

Address Resolution Protocol (ARP) Chapter 6 Page 191

Answer 7

Finds the hardware address of a hose from a known IP address.

Question 8

What does the acronym RARP stand for? Chapter 6 Page 193

Answer 8

Reverse Address Resolution Protocol.

Question 9

What is RARP? Chapter 6 Page 193

Answer 9

Discovers the identity of the IP address for diskless machines by sending out a packet that includes it’s MAC address and a request for the IP address assigned to that MAC address.

Question 10

Data encapsulation Chapter 6 Page 194

Answer 10

Data is wrapped with protocol information at each layer of the OSI model.

Question 11

Protocol Data Units Chapter 6 Page 194

Answer 11

These hold the control information attached to the data at each layer of the model.

Question 12

The Data Link Layer encapsulates each packet into a “________”.

Chapter 6 Page 195

Answer 12

Frame.

Question 13

The transport layer takes the data stream, makes “_______” out of it, and established a reliable session by creating a virtual circuit.

Answer 13

Segments.

Question 14

Which layer is responsible for finding the destination hardware address that dictates where the packet should be sent on the local network.

Chapter 6 Page 197

Answer 14

Network Layer.

Question 15

Exam essential protocols. STUDY EM!

Chapter 6 Page 198

Answer 15

Process/Application protocols (SMTP, FTP, TFTP)

Host to host protocols (TCP, UDP)

Internet protocols (IP, ARP, ICMP)