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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) TCP/IP Models
B) e Communication Protocols
C) OSI Layer
D) Data transmission
  • 2. Why Are Communication Protocols Important?. Except
A) Ensure data integrity, security, and proper sequencing.
B) Enable interoperability between different network devices.
C) Increase network speed regardless of hardware limitations.
D) Define rules for data exchange.
  • 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) De-Encapsulation
B) Encapsulation
  • 6. This resolves IP addresses to MAC addresses
A) OSPF (Open Shortest Path First)
B) BGP (Border Gateway Protocol)
C) ICMP (Internet Control Message Protocol)
D) RIP (Routing Information Protocol)
E) ARP (Address Resolution Protocol)
  • 7. How does ARP work — except which one?
A) The destination device responds with an ARP Reply, providing its MAC address.
B) It checks its ARP cache to see if it already knows the MAC address.
C) A computer needs to send data to another device in the local network.
D) The ARP Request is sent only to the destination device using unicast.
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) ARP Spoofing
B) ARP filtering
C) Static ARP Entries
D) Dynamic ARP Inspection
  • 9. This is used for sending error messages and network diagnostics
A) ARP (Address Resolution Protocol)
B) ICMP (Internet Control Message Protocol)
C) BGP (Border Gateway Protocol)
D) OSPF (Open Shortest Path First)
E) RIP (Routing Information Protocol)
  • 10. This determines how data packets travel from source to destination.
A) Routing
B) ARP
C) DNS
D) ICMP
  • 11. Which of the following is an example of a common ICMP message?
A) GET Request
B) Query
C) Echo Request and Echo Reply
D) Handshake
  • 12. Manually configured by administrators.
A) Static Routing
B) Dynamic Routing
C) Default Routing
D) Distance Vector Routing
  • 13. Uses protocols like RIP, OSPF, BGP.
A) Default Routing
B) Static Routing
C) Dynamic Routing
D) Manual 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) BGP (Border Gateway Protocol)
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) Default gateway
B) Dynamic 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) IP addresses
B) Port Numbers
C) MAC Addresses
D) Subnet Masks
  • 20. Which of the following correctly describes the two main types of IP addresses used in networking?
A) TCP and UDP
B) Static and Dynamic
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) 64-bit binary address used only in private networks
B) 32-bit address divided into 4 octets separated by dots (.)
C) 16-bit address divided into 2 bytes separated by colons (:)
D) 128-bit hexadecimal address separated by colons
  • 23. Which of the following IPv4 address classes is used for multicast groups?
A) Class A (1–126)
B) Class D (224–239)
C) Class B (128–191)
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 D (224–239)
B) Class E (240–255)
C) Class A (1–126)
D) Class C (192–223)
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 D (224–239)
C) Class E (240–255)
D) Class B (128–191)
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 A (1–126)
B) Class E (240–255)
C) Class D (224–239)
D) Class C (192–223)
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 C (192–223)
B) Class B (128–191)
C) Class A (1–126)
D) Class E (240–255)
E) Class E (240–255)
  • 28. Used in internal networks (cannot be routed on the internet)
A) Public IPs
B) Private IPs
C) Loopback Address
D) Subnet Mask
  • 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) DNS Server
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) Subnet Mask
B) Default Gateway
C) MAC Address
D) DNS Server
  • 32. Which subnetting technique allows for different subnet sizes within the same network to optimize IP address usage?
A) DHCP
B) VLSM
C) NAT
D) CIDR
  • 33. What is the default subnet mask for a Class C IP address (e.g., 192.168.1.0)?
A) /24 or 255.255.255.0
B) /32 or 255.255.255.255
C) /16 or 255.255.0.0
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) 4 bits
B) 2 bits
C) 8 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) 16 bits for the network, 16 bits for the host
B) 24 bits for the network, 8 bits for the host
C) 32 bits for the network, 0 bits for the host
D) 26 bits for the network, 6 bits for the host
  • 36. How does IPv6 simplify the process of subnetting compared to IPv4?
A) By using hierarchical addressing, eliminating the need for complex subnetting
B) By reducing the number of available subnets
C) By using only private IP addresses
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) Identify the Number of Subnets
B) Find the Subnet Increments
C) Calculate the Number of Hosts per Subnet
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 defines the gateway IP address.
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) /27
B) /25
C) /24
D) /26
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