-
web.groovymark@gmail.com
- November 24, 2024
Question 01
What is the purpose of a firewall in a network?
a) To filter and control incoming and outgoing network traffic
b) To provide network access to external users
c) To assign IP addresses to devices
d) To encrypt network communications
Correct Answer: a) To filter and control incoming and outgoing network traffic
Explanation: Firewalls monitor and control network traffic based on predetermined security rules, helping to block unauthorized access.
Question 02
What is the primary function of a router?
a) To broadcast data to all devices on a network
b) To connect different networks and route data between them
c) To store and forward emails
d) To manage wireless network connections
Correct Answer: b) To connect different networks and route data between them
Explanation: Routers direct data between different networks, allowing communication between them using IP addresses.
Question 03
Which wireless standard offers the fastest speed and range?
a) 802.11b
b) 802.11g
c) 802.11n
d) 802.11ac
Correct Answer: d) 802.11ac
Explanation: 802.11ac is a faster wireless standard with a longer range than earlier standards like 802.11b and 802.11g.
Question 04
What type of encryption uses a pair of keys, one for encryption and one for decryption?
a) Symmetric encryption
b) Asymmetric encryption
c) Hashing
d) Block encryption
Correct Answer: b) Asymmetric encryption
Explanation: Asymmetric encryption uses two keys—one public for encryption and one private for decryption.
Question 05
Which network device can amplify and retransmit signals to extend the network range?
a) Router
b) Switch
c) Repeater
d) Bridge
Correct Answer: c) Repeater
Explanation: A repeater amplifies and retransmits signals to extend the distance they can travel within a network.
Question 06
Which OSI layer is responsible for ensuring data is error-free before passing it on?
a) Application
b) Data Link
c) Network
d) Transport
Correct Answer: d) Transport
Explanation: The Transport layer ensures data is delivered error-free, in sequence, and with no loss or duplication.
Question 07
What is the primary role of the Data Link layer in the OSI model?
a) Logical addressing and routing
b) Physical data transmission
c) Flow control and error detection
d) Data compression and encryption
Correct Answer: c) Flow control and error detection
Explanation: The Data Link layer ensures reliable data transfer between devices on the same network by managing flow control and error detection.
Question 08
Which wireless security protocol is the most secure and recommended for modern networks?
a) WEP
b) WPA
c) WPA2
d) WPA3
Correct Answer: d) WPA3
Explanation: WPA3 provides enhanced security for wireless networks, including stronger encryption and protection against attacks.
Question 09
What type of device is used to connect different network segments and perform packet forwarding based on MAC addresses?
a) Switch
b) Router
c) Hub
d) Repeater
Correct Answer: a) Switch
Explanation: A switch forwards data between devices on the same network using MAC addresses to determine the destination.
Question 10
Which command would you use to view the IP configuration of a Windows device?
a) ping
b) traceroute
c) netstat
d) ipconfig
Correct Answer: d) ipconfig
Explanation: The ipconfig command is used in Windows to display the network configuration, including IP addresses, subnet masks, and gateways.
Question 11
What is the primary function of a VPN?
a) To encrypt network data between endpoints
b) To allocate IP addresses to devices
c) To monitor network traffic
d) To control access to the internet
Correct Answer: a) To encrypt network data between endpoints
Explanation: A VPN (Virtual Private Network) provides secure, encrypted communication between devices over public networks like the internet.
Question 12
What network topology connects all devices to a central hub or switch?
a) Bus
b) Star
c) Ring
d) Mesh
Correct Answer: b) Star
Explanation: In a star topology, all devices are connected to a central hub or switch, allowing for easy management and troubleshooting.
Question 13
Which protocol is used to automatically assign IP addresses to devices on a network?
a) DNS
b) DHCP
c) ARP
d) ICMP
Correct Answer: b) DHCP
Explanation: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network, reducing the need for manual configuration.
Question 14
What does a VLAN (Virtual Local Area Network) allow you to do?
a) Physically separate devices on different networks
b) Logically group devices on different physical networks
c) Extend the range of a wireless network
d) Monitor network traffic
Correct Answer: b) Logically group devices on different physical networks
Explanation: VLANs allow devices to be grouped logically, even if they are not physically located on the same network, improving security and management.
Question 15
What is the function of ARP (Address Resolution Protocol)?
a) To resolve domain names into IP addresses
b) To resolve IP addresses into MAC addresses
c) To assign IP addresses to devices
d) To monitor network traffic
Correct Answer: b) To resolve IP addresses into MAC addresses
Explanation: ARP is used to map IP addresses to MAC addresses, enabling devices to communicate within a local network.
Question 16
What command is used to test connectivity between two devices on a network?
a) ping
b) ipconfig
c) traceroute
d) nslookup
Correct Answer: a) ping
Explanation: The ping command sends ICMP echo requests to a target device to test network connectivity between two devices.
Question 17
What is the maximum theoretical data transfer rate of a CAT6 cable?
a) 100 Mbps
b) 1 Gbps
c) 10 Gbps
d) 100 Gbps
Which device acts as an intermediary between a local network and external networks, such as the internet?
Question 18
What is the function of the “Gremlin” API in Cosmos DB?
a) Switch
b) Router
c) Firewall
d) Hub
Correct Answer: b) Router
Explanation: Routers direct data between local and external networks by forwarding traffic based on IP addresses.
Question 19
What is the purpose of a subnet mask in networking?
a) To encrypt data for secure communication
b) To divide an IP address into network and host portions
c) To assign MAC addresses to devices
d) To monitor network performance
Correct Answer: b) To divide an IP address into network and host portions
Explanation: A subnet mask helps define which part of an IP address represents the network and which part represents the device or host.
Question 20
What is the function of DNS (Domain Name System)?
a) To assign IP addresses to devices
b) To monitor network traffic
c) To translate domain names into IP addresses
d) To encrypt network communications
Correct Answer: c) To translate domain names into IP addresses
Explanation: DNS translates human-readable domain names (like www.example.com) into IP addresses that devices use to locate and communicate with each other.
