$1$HTTP persistent

A$.$ creates single TCP connections

B$.$ creates multiple TCP connections

$$C$.$ doesn't create any connections

$$D$.$ creates one connections only

$$E$.$ None is true

$2$

IPv$4$ Class A range according to first octet:

A$.1-126$

B$.1-128$

C$.1-127$

D$.0-126$

E$.$ None is true.

$3$

Select the right answers$)$

UPD provides the following services:

Data Transport.

B$.$ Error Checking.

C$.$ Reliable Data Transport.

D$.$ ongestion Control.

E$.$ None is true.

$4$

Root DNS Server is responsible about:

A$.$ Directing the request to TLD Server.

B$.$ Directing the request to Name Server.

C$.$ Providing the IP of the requested website.

D$.$ Providing cached copy of the requested website.

E$.$ None is true.

$5$

Determine which statement is true.

Virtual Switching is:

A$.$ A technique can be used in Internet.

B$.$ A technique doesn't belong to Internet.

c$.$ Working principle is similar to datagram network.

d$.$ No calling setup is used.

E$.$ None is true.