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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) OSI Layer
B) Data transmission
C) e Communication Protocols
D) TCP/IP Models
  • 2. Why Are Communication Protocols Important?. Except
A) Enable interoperability between different network devices.
B) Ensure data integrity, security, and proper sequencing.
C) Define rules for data exchange.
D) Increase network speed regardless of hardware limitations.
  • 3. This is the process of adding headers (and sometimes trailers) to data as it moves down the OSI/TCP-IP layers.
A) De-Encapsulation
B) 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) RIP (Routing Information Protocol)
B) ICMP (Internet Control Message Protocol)
C) ARP (Address Resolution Protocol)
D) BGP (Border Gateway Protocol)
E) OSPF (Open Shortest Path First)
  • 7. How does ARP work — except which one?
A) It checks its ARP cache to see if it already knows the MAC address.
B) The destination device responds with an ARP Reply, providing its MAC address.
C) The ARP Request is sent only to the destination device using unicast.
D) A computer needs to send data to another device in the local network.
E) If not, it sends an ARP Request to all devices in the network.
  • 8. Which of the following is a security issue with ARP?
A) Dynamic ARP Inspection
B) Static ARP Entries
C) ARP Spoofing
D) ARP filtering
  • 9. This is used for sending error messages and network diagnostics
A) ARP (Address Resolution Protocol)
B) RIP (Routing Information Protocol)
C) BGP (Border Gateway Protocol)
D) ICMP (Internet Control Message Protocol)
E) OSPF (Open Shortest Path First)
  • 10. This determines how data packets travel from source to destination.
A) DNS
B) ICMP
C) Routing
D) ARP
  • 11. Which of the following is an example of a common ICMP message?
A) Handshake
B) GET Request
C) Query
D) Echo Request and Echo Reply
  • 12. Manually configured by administrators.
A) Dynamic Routing
B) Default Routing
C) Static Routing
D) Distance Vector Routing
  • 13. Uses protocols like RIP, OSPF, BGP.
A) Dynamic Routing
B) Static 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) RIP (Routing Information Protocol)
B) BGP (Border Gateway Protocol)
C) OSPF (Open Shortest Path First)
  • 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) RIP (Routing Information Protocol)
C) BGP (Border Gateway Protocol)
  • 16. Used on the Internet between ISPs. Controls traffic between different networks worldwide
A) RIP (Routing Information Protocol)
B) OSPF (Open Shortest Path First)
C) BGP (Border Gateway Protocol)
  • 17. This is used when a destination is outside the local network.
A) Static gateway
B) Default gateway
C) Dynamic 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) Static gateway
B) Default gateway
C) Dynamic gateway
  • 19. These are unique numerical identifiers assigned to devices in a network to enable communication.
A) IP addresses
B) MAC Addresses
C) Subnet Masks
D) Port Numbers
  • 20. Which of the following correctly describes the two main types of IP addresses used in networking?
A) MAC and Broadcast
B) Static and Dynamic
C) IPv4 and IPv6
D) TCP and UDP
  • 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) Encapsulation
B) De-Encapsulation
  • 22. Which of the following best describes the structure of an IPv4 address?
A) 128-bit hexadecimal address separated by colons
B) 16-bit address divided into 2 bytes separated by colons (:)
C) 32-bit address divided into 4 octets separated by dots (.)
D) 64-bit binary address used only in private networks
  • 23. Which of the following IPv4 address classes is used for multicast groups?
A) Class B (128–191)
B) Class D (224–239)
C) Class A (1–126)
D) Class E (240–255)
E) Class C (192–223)
  • 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 E (240–255)
B) Class D (224–239)
C) Class C (192–223)
D) Class A (1–126)
E) Class B (128–191)
  • 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 A (1–126)
B) Class B (128–191)
C) Class C (192–223)
D) Class E (240–255)
E) Class D (224–239)
  • 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 B (128–191)
B) Class C (192–223)
C) Class A (1–126)
D) Class E (240–255)
E) Class D (224–239)
  • 27. Which IPv4 address class is reserved for experimental purposes and is not used for general network communication?
A) Class E (240–255)
B) Class C (192–223)
C) Class E (240–255)
D) Class A (1–126)
E) Class B (128–191)
  • 28. Used in internal networks (cannot be routed on the internet)
A) Private IPs
B) Subnet Mask
C) Loopback Address
D) Public IPs
  • 29. This divides a larger network into smaller subnets to improve efficiency, security, and network performance.
A) Bridging
B) Subnetting
C) Routing
D) Switching
  • 30. What determines the network and host portions of an IP address?
A) Subnet Mask
B) DNS Server
C) Default Gateway
D) MAC Address
  • 31. 255.255.255.0 (CIDR: /24) means the first 3 octets represent the network, and the last octet is for hosts.
A) MAC Address
B) Subnet Mask
C) DNS Server
D) Default Gateway
  • 32. Which subnetting technique allows for different subnet sizes within the same network to optimize IP address usage?
A) NAT
B) VLSM
C) CIDR
D) DHCP
  • 33. What is the default subnet mask for a Class C IP address (e.g., 192.168.1.0)?
A) /16 or 255.255.0.0
B) /24 or 255.255.255.0
C) /32 or 255.255.255.255
D) /8 or 255.0.0.0
  • 34. If the subnet mask is /26, how many bits have been borrowed from the host portion of the address?
A) 8 bits
B) 4 bits
C) 2 bits
D) 6 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) 32 bits for the network, 0 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) 24 bits for the network, 8 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 larger subnet masks only
C) By using only private IP addresses
D) By using hierarchical addressing, eliminating the need for complex subnetting
  • 37. Step 1 of subnetting a class C network
A) List the Subnets and Ranges
B) Identify the Number of Subnets
C) Find the Subnet Increments
D) Calculate the Number of Hosts per Subnet
  • 38. Last Step of subnetting a class C network
A) List the Subnets and Ranges
B) Calculate the Number of Hosts per Subnet
C) Identify the Number of Subnets
D) Find the Subnet Increments
  • 39. What is the primary function of the subnet mask in an IP address?
A) It determines the network and host portions of an IP address.
B) It defines the gateway IP address.
C) It determines the port number for network services.
D) It defines the MAC address of the device.
  • 40. If the subnet mask is 255.255.255.224, what is the corresponding CIDR notation?
A) /24
B) /25
C) /26
D) /27
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