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

Question 3

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

192.168.1.1 172.217.160.142 8.8.8.8 10.100.50.1

Question 4

What does the acronym VLAN stand for?

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

Question 5

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

SNMP DNS DHCP ARP

Question 6

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

255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.240

Question 7

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

ipconfig /all traceroute ping netstat

Question 8

What is the purpose of the ARP protocol?

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

Question 9

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

Transport Layer Presentation Layer Session Layer Data Link Layer

Question 10

What is a default gateway?

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

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

Question 13

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

DNS FTP SMTP HTTP

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?

Data Link Layer Transport Layer Network Layer Physical Layer

Question 16

What is the difference between TCP and UDP?

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

Question 17

What is a subnet?

A single network segment. A protocol used for routing. A type of wireless access point. 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?

RARP DHCP ICMP ARP

Question 19

What is the purpose of a firewall?

To provide wireless connectivity. To increase network speed. To translate IP addresses. 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 ip route show interfaces show protocols show arp

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. End-to-end communication services, including reliable data transfer and flow control. How applications interact with the network.