What is the functions of a header when writing html?

a. it provides the browser with informations about the web page

b. it describes which computer language was used to write the source code

c. it begins the information to create the content of the web page

d. it allows the writer to add descriptive information about the document

1. which of the following statements are true about routers and routing on the internet. choose two answers. a. protocols ensure that a single path between two computers is established before sending packets over it. b. routers are hierarchical and the "root" router is responsible for communicating to sub-routers the best paths for them to route internet traffic. c. a packet traveling between two computers on the internet may be rerouted many times along the way or even lost or "dropped". d. routers act independently and route packets as they see fit.