Circuit Switching networks 1.3

Question 1

Packet switching

Answer 1

-when file is sent it is broken up into data packets
-each given a header

Question 2

What does the header contain on data packets

Answer 2

-destination of IP address.
location,
sequence number,
number of packets,
error checking data

Question 3

Data packets

Answer 3

-each packet is the same size
-may take different routes through the internet
-marked w a number to be put back together by receive

Question 4

Reassembling the data

Answer 4

-the recipient computer re-orders the packets into the correct order
-each packet is checked for errors

Question 5

What happens to corrupted packets

Answer 5

-they are requested to be resent

Question 6

Moving packets on a net

Answer 6

-routers are any node that can route packets from one place to anothers

Question 7

nodes

Answer 7

points on a network

Question 8

MAC addressing

Answer 8

-assigned to each NIC by manufacturer

Question 9

Network Interface card

Answer 9

-built onto every networked device
-built onto motherboard

Question 10

What happens when you request a web page

Answer 10

-each router along the way uses the MAC address of the next router to send data packets on the next step of its journey