CIW Internet Protocols & Network Foundations

Question 1

At which layer of the OSI model does the IP protocol operate?

Accepted Answer

Network

Answer

Physical

Answer

Data Link

Answer

Transport

Question 2

Which port does HTTP use by default?

Accepted Answer

80

Answer

21

Answer

25

Answer

443

Question 3

What is the primary difference between TCP and UDP?

Accepted Answer

TCP provides guaranteed, connection-oriented delivery while UDP does not

Answer

TCP is faster but less reliable than UDP

Answer

UDP provides guaranteed delivery while TCP does not

Answer

UDP is connection-oriented while TCP is connectionless

Question 4

Which protocol is responsible for automatically assigning IP addresses to devices on a network?

Accepted Answer

DHCP

Answer

DNS

Answer

FTP

Answer

SNMP

Question 5

What is the purpose of the ARP (Address Resolution Protocol)?

Accepted Answer

Maps IP addresses to MAC addresses

Answer

Assigns IP addresses to domain names

Answer

Routes packets between different networks

Answer

Encrypts network traffic between endpoints

Question 6

Which protocol is used by an email client to send messages to a mail server?

Accepted Answer

SMTP

Answer

POP3

Answer

IMAP

Answer

FTP

Question 7

What does a TTL (Time to Live) value in an IP packet control?

Accepted Answer

The maximum number of hops a packet can traverse before being discarded

Answer

How long a DNS record is cached

Answer

The duration a TCP connection stays open

Answer

The timeout period for an HTTP request