D315 Exam 1 Questions with Verified Correct
Answers
Switch
extends the network by using packet switching to forward data to the intended hard-wired
devices
server
provides services such as website hosting and routing for other devices
modem
bridges the customer network and the ISP
Access point to the internet
router
Directs data between different networks, such as those in separate buildings
Client/server
computers communicate thru a central server
hierarchial
network where a mainframe computer serves terminals across the organization
ping
tests connectivity between two devices
tracert
traces route taken by packets to reach a destination
,nslookup
used to query DNS servers for domain name resolution
ipconfig
used to display the IP configuration, including IP address, subnet mask, and default gateway
netstat
displays active network connections, listening ports, and related information, which can help
identify sus activity
route
linux: views the routing table on a system to troubleshoot routing issues
ifconfig
linux: used to configure and display info about network interfaces, IP addresses, netmasks,
and interface status
traceroute
linux: used to trace the route taken by packets to reach a destination and measure the round-
trip time to each hop along the path
IPv6 Address
128 bits long
use hexadecimal notation separated by colons
IPv4
used dotted decimals for separation
arp -a command
, command reveals the mapping of IP addresses to physical MAC addresses
data link layer
OSI Model,
layer responsible for node-to-node data transfer and error detection and correction
session layer
OSI Model
Establishes, manages, and terminates a connection
transport layer
OSI Model
Layer responsible for end-to-end communication, ensuring complete data transfer, error
recovery, and flow control
Network Layer
OSI Model
layer for routing and forwarding packets across different networks by translating logical
network addresses into physical addresses
802.11
1 to 2 Mbps over 2.4 GHz
802.11a
54 Mbps over 5 GHz
802.11b
Answers
Switch
extends the network by using packet switching to forward data to the intended hard-wired
devices
server
provides services such as website hosting and routing for other devices
modem
bridges the customer network and the ISP
Access point to the internet
router
Directs data between different networks, such as those in separate buildings
Client/server
computers communicate thru a central server
hierarchial
network where a mainframe computer serves terminals across the organization
ping
tests connectivity between two devices
tracert
traces route taken by packets to reach a destination
,nslookup
used to query DNS servers for domain name resolution
ipconfig
used to display the IP configuration, including IP address, subnet mask, and default gateway
netstat
displays active network connections, listening ports, and related information, which can help
identify sus activity
route
linux: views the routing table on a system to troubleshoot routing issues
ifconfig
linux: used to configure and display info about network interfaces, IP addresses, netmasks,
and interface status
traceroute
linux: used to trace the route taken by packets to reach a destination and measure the round-
trip time to each hop along the path
IPv6 Address
128 bits long
use hexadecimal notation separated by colons
IPv4
used dotted decimals for separation
arp -a command
, command reveals the mapping of IP addresses to physical MAC addresses
data link layer
OSI Model,
layer responsible for node-to-node data transfer and error detection and correction
session layer
OSI Model
Establishes, manages, and terminates a connection
transport layer
OSI Model
Layer responsible for end-to-end communication, ensuring complete data transfer, error
recovery, and flow control
Network Layer
OSI Model
layer for routing and forwarding packets across different networks by translating logical
network addresses into physical addresses
802.11
1 to 2 Mbps over 2.4 GHz
802.11a
54 Mbps over 5 GHz
802.11b
