Quizzes – EduHub

Question 1

Which OSI layer is responsible for the logical addressing (IP addresses) used in routing packets across networks?

Layer 4 - Transport Layer Layer 3 - Network Layer Layer 7 - Application Layer Layer 2 - Data Link Layer

Question 2

What is the primary function of a router in a network?

To forward data packets between different IP networks. To establish a wireless connection for client devices. To connect devices within the same local network segment (LAN). To provide power to network devices.

Question 3

Which of the following is a private IP address range as defined by RFC 1918?

10.100.50.1 172.217.160.142 192.168.1.1 8.8.8.8

Question 4

What does the acronym VLAN stand for?

Virtual Link Access Network Virtual Local Area Network Very Large Area Network Vastly Integrated Local Area Network

Question 5

Which protocol is used to automatically assign IP addresses to devices on a network?

DNS SNMP ARP DHCP

Question 6

What is the default subnet mask for a Class C IP address?

255.0.0.0 255.255.255.0 255.255.0.0 255.255.255.240

Question 7

Which command is commonly used to troubleshoot basic IP connectivity and check if a host is reachable?

traceroute ipconfig /all netstat ping

Question 8

What is the purpose of the ARP protocol?

To resolve a MAC address from an IP address. To resolve an IP address from a MAC address. To assign IP addresses automatically. To translate domain names to IP addresses.

Question 9

Which layer of the OSI model handles end-to-end communication and reliability using protocols like TCP and UDP?

Data Link Layer Session Layer Presentation Layer Transport Layer

Question 10

What is a default gateway?

A router that allows devices on a local network to communicate with devices on other networks. The IP address of the DNS server. The first IP address in a subnet. A virtual private network connection.

Question 11

Which command is used on Cisco IOS devices to view the current router configuration?

show startup-config show running-config show ip interface brief debug ip packet

Question 12

What is the primary function of a switch?

To provide wireless access. To filter traffic based on IP addresses. To forward traffic based on MAC addresses within a single network segment. To connect different IP subnets.

Question 13

Which protocol is used for name resolution, converting domain names to IP addresses?

DNS FTP HTTP SMTP

Question 14

What is the purpose of NAT (Network Address Translation)?

To encrypt all network traffic. To map private IP addresses to public IP addresses, conserving public IPv4 addresses. To segment a network into multiple VLANs. To automatically assign IP addresses.

Question 15

Which layer of the OSI model is responsible for physical transmission of bits over the medium?

Physical Layer Transport Layer Network Layer Data Link Layer

Question 16

What is the difference between TCP and UDP?

TCP is connectionless and unreliable; UDP is connection-oriented and reliable. TCP is connection-oriented and reliable; UDP is connectionless and unreliable. UDP provides flow control, TCP does not. TCP operates at Layer 3, UDP at Layer 4.

Question 17

What is a subnet?

A type of wireless access point. A single network segment. A protocol used for routing. A division of a larger IP network into smaller, manageable networks.

Question 18

Which protocol is responsible for finding the MAC address associated with an IP address on the local network?

ICMP DHCP RARP ARP

Question 19

What is the purpose of a firewall?

To increase network speed. To translate IP addresses. To provide wireless connectivity. To monitor and control incoming and outgoing network traffic based on security rules.

Question 20

Which command is used to view the routing table on a router?

show protocols show arp show interfaces show ip route

Question 21

What is the function of the Transport Layer (Layer 4) in the OSI model?

Physical transmission of data bits. Logical addressing and routing. How applications interact with the network. End-to-end communication services, including reliable data transfer and flow control.