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Netwo1 Midterm- Reviewer TwT
Contributed by: Fernandez
  • 1. This refers to the process of sending and receiving digital or analog data between devices over a network.
A) e Communication Protocols
B) OSI Layer
C) TCP/IP Models
D) Data transmission
  • 2. Why Are Communication Protocols Important?. Except
A) Ensure data integrity, security, and proper sequencing.
B) Increase network speed regardless of hardware limitations.
C) Define rules for data exchange.
D) Enable interoperability between different network devices.
  • 3. This is the process of adding headers (and sometimes trailers) to data as it moves down the OSI/TCP-IP layers.
A) Encapsulation
B) De-Encapsulation
  • 4. TCP/IP model has how many layers?
A) four layers (Application, Transport, Internet, Network Access)
B) seven layers (Application, Presentation, Session, Transport, Network, Data Link, Network Access)
C) four layers (Application, Transport, Internet, Presentation)
D) seven layers (Application, Presentation, Session, Transport, Network, Data Link, Physical)
  • 5. Happens at the receiving end, where headers and trailers are stripped off at each layer
A) Encapsulation
B) De-Encapsulation
  • 6. This resolves IP addresses to MAC addresses
A) BGP (Border Gateway Protocol)
B) ARP (Address Resolution Protocol)
C) RIP (Routing Information Protocol)
D) ICMP (Internet Control Message Protocol)
E) OSPF (Open Shortest Path First)
  • 7. How does ARP work — except which one?
A) The ARP Request is sent only to the destination device using unicast.
B) The destination device responds with an ARP Reply, providing its MAC address.
C) It checks its ARP cache to see if it already knows the MAC address.
D) If not, it sends an ARP Request to all devices in the network.
E) A computer needs to send data to another device in the local network.
  • 8. Which of the following is a security issue with ARP?
A) Dynamic ARP Inspection
B) ARP Spoofing
C) ARP filtering
D) Static ARP Entries
  • 9. This is used for sending error messages and network diagnostics
A) RIP (Routing Information Protocol)
B) ICMP (Internet Control Message Protocol)
C) ARP (Address Resolution Protocol)
D) OSPF (Open Shortest Path First)
E) BGP (Border Gateway Protocol)
  • 10. This determines how data packets travel from source to destination.
A) DNS
B) Routing
C) ARP
D) ICMP
  • 11. Which of the following is an example of a common ICMP message?
A) Query
B) Handshake
C) Echo Request and Echo Reply
D) GET Request
  • 12. Manually configured by administrators.
A) Distance Vector Routing
B) Dynamic Routing
C) Default Routing
D) Static Routing
  • 13. Uses protocols like RIP, OSPF, BGP.
A) Static Routing
B) Dynamic Routing
C) Manual Routing
D) Default Routing
  • 14. Uses hop count to determine the best route. Best for small networks. Updates every 30 seconds, but slow convergence.
A) OSPF (Open Shortest Path First)
B) BGP (Border Gateway Protocol)
C) RIP (Routing Information Protocol)
  • 15. Uses link-state information to find the fastest path. Best for medium to large networks. Faster and more efficient than RIP.
A) OSPF (Open Shortest Path First)
B) BGP (Border Gateway Protocol)
C) RIP (Routing Information Protocol)
  • 16. Used on the Internet between ISPs. Controls traffic between different networks worldwide
A) BGP (Border Gateway Protocol)
B) OSPF (Open Shortest Path First)
C) RIP (Routing Information Protocol)
  • 17. This is used when a destination is outside the local network.
A) Dynamic gateway
B) Default gateway
C) Static gateway
  • 18. A home router connects devices in 192.168.1.0/24 to the internet using a default gateway (e.g., 192.168.1.1).
A) Dynamic gateway
B) Default gateway
C) Static gateway
  • 19. These are unique numerical identifiers assigned to devices in a network to enable communication.
A) Port Numbers
B) MAC Addresses
C) Subnet Masks
D) IP addresses
  • 20. Which of the following correctly describes the two main types of IP addresses used in networking?
A) MAC and Broadcast
B) TCP and UDP
C) Static and Dynamic
D) IPv4 and IPv6
  • 21. A user sends an email. The message is encapsulated at the sender's computer, transmitted over the network, and de-encapsulated at the recipient's computer.
A) De-Encapsulation
B) Encapsulation
  • 22. Which of the following best describes the structure of an IPv4 address?
A) 64-bit binary address used only in private networks
B) 16-bit address divided into 2 bytes separated by colons (:)
C) 128-bit hexadecimal address separated by colons
D) 32-bit address divided into 4 octets separated by dots (.)
  • 23. Which of the following IPv4 address classes is used for multicast groups?
A) Class E (240–255)
B) Class C (192–223)
C) Class B (128–191)
D) Class D (224–239)
E) Class A (1–126)
  • 24. Which IPv4 address class supports very large networks such as ISPs and uses a default subnet mask of 255.0.0.0?
A) Class A (1–126)
B) Class B (128–191)
C) Class E (240–255)
D) Class D (224–239)
E) Class C (192–223)
  • 25. Which IPv4 address class is typically used by medium-sized organizations like universities and uses the subnet mask 255.255.0.0?
A) Class C (192–223)
B) Class A (1–126)
C) Class D (224–239)
D) Class B (128–191)
E) Class E (240–255)
  • 26. Which class of IPv4 addresses is designed for small networks (e.g., home or office LANs) and uses a default subnet mask of 255.255.255.0?
A) Class C (192–223)
B) Class A (1–126)
C) Class E (240–255)
D) Class D (224–239)
E) Class B (128–191)
  • 27. Which IPv4 address class is reserved for experimental purposes and is not used for general network communication?
A) Class A (1–126)
B) Class C (192–223)
C) Class E (240–255)
D) Class B (128–191)
E) Class E (240–255)
  • 28. Used in internal networks (cannot be routed on the internet)
A) Public IPs
B) Subnet Mask
C) Private IPs
D) Loopback Address
  • 29. This divides a larger network into smaller subnets to improve efficiency, security, and network performance.
A) Bridging
B) Routing
C) Subnetting
D) Switching
  • 30. What determines the network and host portions of an IP address?
A) MAC Address
B) DNS Server
C) Subnet Mask
D) Default Gateway
  • 31. 255.255.255.0 (CIDR: /24) means the first 3 octets represent the network, and the last octet is for hosts.
A) DNS Server
B) Default Gateway
C) Subnet Mask
D) MAC Address
  • 32. Which subnetting technique allows for different subnet sizes within the same network to optimize IP address usage?
A) VLSM
B) DHCP
C) NAT
D) CIDR
  • 33. What is the default subnet mask for a Class C IP address (e.g., 192.168.1.0)?
A) /8 or 255.0.0.0
B) /32 or 255.255.255.255
C) /16 or 255.255.0.0
D) /24 or 255.255.255.0
  • 34. If the subnet mask is /26, how many bits have been borrowed from the host portion of the address?
A) 2 bits
B) 6 bits
C) 8 bits
D) 4 bits
  • 35. If a network uses a /26 subnet mask, how many bits are used for the network portion and how many bits are left for the host portion?
A) 24 bits for the network, 8 bits for the host
B) 26 bits for the network, 6 bits for the host
C) 16 bits for the network, 16 bits for the host
D) 32 bits for the network, 0 bits for the host
  • 36. How does IPv6 simplify the process of subnetting compared to IPv4?
A) By reducing the number of available subnets
B) By using only private IP addresses
C) By using hierarchical addressing, eliminating the need for complex subnetting
D) By using larger subnet masks only
  • 37. Step 1 of subnetting a class C network
A) List the Subnets and Ranges
B) Calculate the Number of Hosts per Subnet
C) Find the Subnet Increments
D) Identify the Number of Subnets
  • 38. Last Step of subnetting a class C network
A) Find the Subnet Increments
B) Calculate the Number of Hosts per Subnet
C) Identify the Number of Subnets
D) List the Subnets and Ranges
  • 39. What is the primary function of the subnet mask in an IP address?
A) It defines the gateway IP address.
B) It determines the port number for network services.
C) It defines the MAC address of the device.
D) It determines the network and host portions of an IP address.
  • 40. If the subnet mask is 255.255.255.224, what is the corresponding CIDR notation?
A) /26
B) /24
C) /25
D) /27
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