#1
Which of the following devices operates at the physical layer of the OSI model?
Repeater
ExplanationRepeater regenerates signals at the physical layer.
#2
What is the maximum data rate for a standard Ethernet LAN?
1 Gbps
Explanation1 Gbps is the maximum data rate for standard Ethernet LAN.
#3
What does TCP stand for in networking?
Transmission Control Protocol
ExplanationTCP stands for Transmission Control Protocol.
#4
Which of the following is NOT a type of network topology?
Square
ExplanationSquare is not a type of network topology.
#5
What is the purpose of DHCP in networking?
To dynamically assign IP addresses to devices
ExplanationDHCP dynamically assigns IP addresses to devices.
#6
Which protocol is used to send email?
SMTP
ExplanationSMTP (Simple Mail Transfer Protocol) is used to send email.
#7
What is the purpose of a subnet mask in networking?
To identify the network portion of an IP address
ExplanationSubnet mask identifies the network portion of an IP address.
#8
In networking, what is DNS used for?
To translate domain names to IP addresses
ExplanationDNS translates domain names to IP addresses.
#9
What is the primary function of a firewall in a network?
To filter and block unwanted traffic
ExplanationFirewall filters and blocks unwanted traffic.
#10
What is the purpose of NAT (Network Address Translation) in networking?
To convert private IP addresses to public IP addresses
ExplanationNAT converts private IP addresses to public IP addresses.
#11
Which of the following is NOT a characteristic of a peer-to-peer network?
Centralized administration
ExplanationPeer-to-peer networks lack centralized administration.
#12
What is the maximum number of IP addresses that can be assigned to hosts on a subnet with a subnet mask of 255.255.255.248?
30
ExplanationWith a subnet mask of 255.255.255.248, 30 IP addresses can be assigned to hosts.
#13
What is the function of ICMP (Internet Control Message Protocol) in networking?
To diagnose network communication issues
ExplanationICMP is used to diagnose network communication issues.
#14
What is the purpose of VLAN (Virtual Local Area Network) in networking?
To logically group devices into separate networks
ExplanationVLAN logically groups devices into separate networks.
#15
What is the purpose of QoS (Quality of Service) in networking?
To prioritize network traffic
ExplanationQoS prioritizes network traffic.