1. What is the purpose of ICMP (Internet Control Message Protocol) in networking? Resolving domain names to IP addresses Managing network routing Encrypting data traffic Reporting errors and operational information 2. Which layer of the OSI model is responsible for bit synchronization, transmitting physical signals over the media, and determining the interface between the DTE and DCE? Transport Layer Data Link Layer Network Layer Physical Layer 3. The Transport Layer is responsible for: Multiplexing upper-layer applications and session establishment Data compression and decompression Routing packets through the Internet Coordinating communication between systems 4. Which of the following IP address ranges is reserved for multicast communication? 224.0.0.0 – 239.255.255.255 192.168.0.0 – 192.168.255.255 10.0.0.0 – 10.255.255.255 169.254.0.0 – 169.254.255.255 5. Which layer of the OSI model is responsible for presenting data in standard formats, data compression, decompression, encryption, and decryption? Data Link Layer Session Layer Transport Layer Presentation Layer 6. Which layer of the OSI model is responsible for identifying and establishing the availability of intended communication partners and verifying sufficient resources for communication? Network Layer Physical Layer Data Link Layer Application Layer 7. Which layer of the OSI model is responsible for maintaining communication sessions between systems/nodes? Physical Layer Transport Layer Network Layer Session Layer 8. Which networking component operates at Layer 2 of the OSI model and makes forwarding decisions based on MAC addresses? Hub Router Switch Gateway 9. Which IP address class has the default subnet mask of 255.255.0.0 and is suitable for medium-sized networks? Class B Class C Class A Class D 10. What is the purpose of a proxy server in networking? Encrypting data traffic Assigning IP addresses to devices Providing a central point for authentication and access control Managing network routing 11. In a network, what does the term “collision domain” refer to? A network topology with a circular arrangement of devices A network segment with a single device A segment of the network where data collisions can occur A group of devices sharing the same network resources 12. What is the primary responsibility of the Network Layer in the OSI model? Transmitting and receiving frames Coordinating communication between systems Multiplexing upper-layer applications Routing packets through the Internet 13. Which layer of the OSI model handles transmission and reception of frames, error detection and correction, and uses frame headers for these purposes? Network Layer Physical Layer Data Link Layer Transport Layer 14. Which networking component operates at Layer 2 of the OSI model and makes forwarding decisions based on MAC addresses? Switch Gateway Router Hub 15. What is the purpose of the OSI model in networking? To handle error control and flow control To define computer networking protocols To manage the physical connections in a network To determine the physical interfaces of devices 16. Which networking component operates at Layer 4 of the OSI model and provides connection less data communication? Router Switch Transport Layer Hub 17. Which layer of the OSI model handles access to shared media, such as Token passing or Ethernet? Presentation Layer Logical Link Control (LLC) sub-layer Data Link Layer Media Access Control (MAC) sub-layer 18. Which networking component operates at Layer 3 of the OSI model and makes routing decisions based on IP addresses? Access Point Router Switch Hub 19. Routers operate at which layer of the OSI model? Transport Layer Network Layer Session Layer Data Link Layer 20. Which layer of the OSI model handles the actual flow of bits and transmits physical signals over the media? Transport Layer Data Link Layer Network Layer Physical Layer Loading … Question 1 of 20
