1) What is the primary role of a network? a) A) To store files locally b) B) To connect computer systems together c) C) To restrict access to the internet d) D) To eliminate the need for hardware devices 2) Which type of network connects computers within the same building? a) A) Wide Area Network (WAN) b) B) Local Area Network (LAN) c) C) Metropolitan Area Network (MAN) d) D) Virtual Private Network (VPN) 3) What type of network is created by Wi-Fi connections? a) A) Wide Area Network (WAN) b) B) Metropolitan Area Network (MAN) c) C) Personal Area Network (PAN) d) D) Local Area Network (LAN) 4) Which of the following is a short-range communication technology used for wireless payments? a) A) Bluetooth b) B) Near Field Communication (NFC) c) C) Ethernet d) D) TCP/IP 5) What is the main purpose of the Transmission Control Protocol (TCP) in the TCP/IP suite? a) A) To assign MAC addresses to devices b) B) To manage and route data packets across networks c) C) To detect and correct transmission errors d) D) To provide wireless internet access 6) What does the Internet Protocol (IP) do? a) A) Encrypts network data for security b) B) Assigns and manages IP addresses on a network c) C) Handles user authentication for network access d) D) Transfers packets between local devices only 7) Which of the following is NOT a function of Internet Control Message Protocol (ICMP)? a) A) Detecting network issues b) B) Assigning IP addresses c) C) Reporting network errors d) D) Checking if a remote system is alive 8) What is an IP address used for? a) A) Identifying a computer on a network b) B) Encrypting files on a hard drive c) C) Speeding up network performance d) D) Connecting Bluetooth devices 9) What is the correct format of an IPv4 address? a) A) Four numbers separated by colons b) B) Six hexadecimal digits separated by dashes c) C) Eight groups of hexadecimal numbers d) D) Four numbers between 0-255, separated by periods 10) What does DHCP do in a network? a) A) Assigns IP addresses dynamically b) B) Encrypts network communication c) C) Resolves domain names to IP addresses d) D) Checks for network connectivity 11) Which of the following is a valid IPv4 address? a) A) 192.300.1.1 b) B) 127.0.0.1 c) C) 172.16.254.1 d) D) 256.1.2.3 12) What happens if a computer cannot find a DHCP server? a) A) It stops working b) B) It assigns itself an APIPA address c) C) It automatically connects to another network d) D) It disconnects from the internet permanently 13) Which of the following IP addresses is reserved for loopback testing? a) A) 192.168.1.1 b) B) 255.255.255.255 c) C) 127.0.0.1 d) D) 0.0.0.0 14) What is the first value in an IPv4 address that should never be used for a valid host IP address? a) A) 10 b) B) 223 c) C) 127 d) D) 192 15) What is the purpose of private IP addresses? a) A) They are used for secure military communications b) B) They prevent any computer from accessing the internet c) C) They are reusable and used within private networks d) D) They are assigned only to government institutions 16) What is a MAC address primarily used for? a) A) They are used for secure military communications b) B) They prevent any computer from accessing the internet c) C) They are reusable and used within private networks d) D) They are assigned only to government institutions 17) What is the correct format of a MAC address? a) A) Assigning IP addresses to devices b) B) Identifying devices on a local network c) C) Encrypting data packets d) D) Resolving domain names 18) Which part of a MAC address identifies the manufacturer of the device? a) A) The last six digits b) B) The first six digits c) C) The entire address d) D) The first three digits 19) What does the Domain Name System (DNS) do? a) A) Converts MAC addresses into IP addresses b) B) Encrypts network traffic for security c) C) Resolves domain names into IP addresses d) D) Assigns IP addresses dynamically 20) What happens if a DNS server does not have the IP address for a domain? a) A) Converts MAC addresses into IP addresses b) B) Encrypts network traffic for security c) C) Resolves domain names into IP addresses d) D) Assigns IP addresses dynamically 21) What protocol is used to resolve an IP address to a MAC address? a) A) ICMP b) B) DHCP c) C) ARP d) D) TCP 22) Which of the following best describes the hierarchy of DNS? a) A) A flat structure with no organization b) B) A centralized server that handles all lookups c) C) A distributed system with multiple levels of servers d) D) A single local computer storing all IP addresses 23) Which type of network communication involves sending messages to multiple recipients at the same time? a) A) Unicast b) B) Multicast c) C) Broadcast d) D) Anycast 24) What type of IP address is automatically assigned if a system cannot obtain an address from DHCP? a) A) Public IP address b) B) Private IP address c) C) APIPA address d) D) Static IP address 25) Which of the following is NOT a reason why networks use small packets instead of large ones? a) A) To increase the reliability of data transmission b) B) To reduce congestion on the network c) C) To ensure the entire file arrives at once d) D) To make error correction easier 26) What protocol ensures data arrives in order and requests missing packets to be retransmitted? a) A) TCP b) B) IP c) C) UDP d) D) ICMP 27) What happens when two systems communicate over a network? a) A) Only the sender’s IP address is used b) B) The source and destination IP addresses swap in each reply c) C) The MAC address remains constant for all devices d) D) IP addresses do not change during communication 28) Which network type uses Bluetooth technology? a) A) LAN b) B) WAN c) C) PAN d) D) MAN 29) What happens when a device moves from one network to another? a) A) Both its MAC address and IP address change b) B) Its IP address changes, but the MAC address stays the same c) C) Both addresses remain the same d) D) Only its MAC address changes 30) What type of IP address is assigned to a computer that must always use the same address? a) A) Dynamic b) B) Static c) C) APIPA d) D) Multicast

TCP/IP Quiz

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