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