Module 8 - 10
Networking Fundamentals Quiz
Test your knowledge on networking fundamentals with this comprehensive quiz designed for students and professionals alike. Dive deep into various networking concepts and protocols, ensuring a solid understanding of crucial topics.
Key Features:
- 73 diverse questions covering all aspects of networking
- Multiple choice, checkbox, and text input formats
- Instant feedback on your answers
Which information is used by routers to forward a data packet toward its destination?
Destination data-link address
Destination IP address
Source IP address
Source data-link address
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
The packet will be sent directly to the destination host.
The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host.
The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.
The packet will be sent only to the default gateway.
A router receives a packet from the Gigabit 0/0 interface and determines that the packet needs to be forwarded out the Gigabit 0/1 interface. What will the router do next?
Route the packet out the Gigabit 0/1 interface
Look into the ARP cache to determine the destination IP address
Create a new Layer 2 Ethernet frame to be sent to the destination
Look into the routing table to determine if the destination network is in the routing table
Which IPv4 address can a host use to ping the loopback interface?
127.0.0.1
126.0.0.0
127.0.0.0
126.0.0.1
A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?
The cable is not connected properly to the NIC.
The computer has an incorrect subnet mask.
The computer has an invalid default gateway address.
The computer has an invalid IP address.
Which statement describes a feature of the IP protocol?
MAC addresses are used during the IP packet encapsulation.
IP relies on Layer 2 protocols for transmission error control.
IP encapsulation is modified based on network media.
IP relies on upper layer services to handle situations of missing or out-of-order packets.
Why is NAT not needed in IPv6?
Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks.
Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.
The end-to-end connectivity problems that are caused by NAT are solved because the number of routes increases with the number of nodes that are connected to the Internet.
The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.
Which parameter does the router use to choose the path to the destination when there are multiple routes available?
The lower metric value that is associated with the destination network
The lower gateway IP address to get to the destination network
The higher metric value that is associated with the destination network
The higher gateway IP address to get to the destination network
What are two services provided by the OSI network layer? (Choose two.)
Performing error detection
Placement of frames on the media
Encapsulating PDUs from the transport layer
Routing packets toward the destination
Collision detection
Within a production network, what is the purpose of configuring a switch with a default gateway address?
It provides a next-hop address for all traffic that flows through the switch.
A switch must have a default gateway to be accessible by Telnet and SSH.
Hosts that are connected to the switch can use the switch default gateway address to forward packets to a remote destination.
The default gateway address is used to forward packets originating from the switch to remote networks.
What is a basic characteristic of the IP protocol?
Connectionless
Reliable end-to-end delivery
User data segmentation
Media dependent
Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly?
Sequence Number
Time-to-Live
Differentiated Services
Acknowledgment Number
What is one advantage that the IPv6 simplified header offers over IPv4?
Smaller-sized header
Smaller-sized source and destination IP addresses
Efficient packet handling
Little requirement for processing checksums
What IPv4 header field identifies the upper layer protocol carried in the packet?
Identification
Differentiated Services
Version
Protocol
What information does the loopback test provide?
The device has end-to-end connectivity.
DHCP is working correctly.
The Ethernet cable is working correctly.
The device has the correct IP address on the network.
The TCP/IP stack on the device is working correctly.
What routing table entry has a next hop address associated with a destination network?
Remote routes
Directly-connected routes
Local routes
C and L source routes
How do hosts ensure that their packets are directed to the correct network destination?
They always direct their packets to the default gateway, which will be responsible for the packet delivery.
They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.
They search in their own local routing table for a route to the network destination address and pass this information to the default gateway.
They send a query packet to the default gateway asking for the best route.
When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation?
Next Header
Differentiated Services
Traffic Class
Flow Label
What statement describes the function of the Address Resolution Protocol?
ARP is used to discover the MAC address of any host on a different network.
ARP is used to discover the MAC address of any host on the local network.
ARP is used to discover the IP address of any host on a different network.
ARP is used to discover the IP address of any host on the local network.
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)
The destination address in the frame is a known unicast address.
The source address in the frame is a multicast address.
The source address in the frame header is the broadcast address.
The destination address is unknown to the switch.
The frame has the broadcast address as the destination address.
Which statement describes the treatment of ARP requests on the local link?
They are received and processed by every device on the local network.
They must be forwarded by all routers on the local network.
They are received and processed only by the target device.
They are dropped by all switches on the local network.
Which destination address is used in an ARP request frame?
The physical address of the destination host
FFFF.FFFF.FFFF
AAAA.AAAA.AAAA
0.0.0.0
255.255.255.255
A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?
The ARP cache is synchronized with the router interface.
The current content of the ARP cache is displayed.
The detailed information of the ARP cache is displayed.
The ARP cache is cleared.
Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?
The switch will forward the frame only to port 2.
The switch will discard the frame.
The switch will forward the frame to all ports.
The switch will forward the frame to all ports except port 4.
The switch will forward the frame only to ports 1 and 3.
Which two types of IPv6 messages are used in place of ARP for address resolution?
Neighbor solicitation
Echo request
Anycast
Broadcast
Neighbor advertisement
Echo reply
What is the aim of an ARP spoofing attack?
To flood the network with ARP reply broadcasts
To associate IP addresses to the wrong MAC address
To fill switch MAC address tables with bogus addresses
To overwhelm network hosts with ARP requests
Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply?
The MAC address of the G0/0 interface on R1
The MAC address of S2
The MAC address of File_server1
The MAC address of S1
The MAC address of the G0/0 interface on R2
Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer?
ARP cache
Neighbor table
Routing table
MAC address table
What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?
Source IP address
Ethernet type
Source MAC address
Destination IP address
Destination MAC address
A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?
Power cycle the device.
Enter CTRL-Z at the privileged mode prompt.
Exit privileged EXEC mode and press Enter.
Exit global configuration mode.
Reboot the device.
What are two functions of NVRAM? (Choose two.)
To retain contents when power is removed
To store the ARP table
To contain the running configuration file
To store the startup configuration file
To store the routing table
A router boots and enters setup mode. What is the reason for this?
The configuration file is missing from NVRAM.
The IOS image is corrupt.
Cisco IOS is missing from flash memory.
The POST process has detected hardware failure.
The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?
The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1.
The switch can be remotely managed from a host on another network.
The switch can communicate with other hosts on the 172.16.100.0 network.
The switch will have a management interface with the address 172.16.100.1.
What happens when the transport input ssh command is entered on the switch vty lines?
The switch requires remote connections via a proprietary client software.
Communication between the switch and remote users is encrypted.
The switch requires a username/password combination for remote access.
The SSH client on the switch is enabled.
Refer to the exhibit. A user PC has successfully transmitted packets to www.cisco.com. Which IP address does the user PC target in order to forward its data off the local network?
172.24.255.17
172.24.1.22
172.20.1.18
172.24.255.4
172.20.0.254
Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)
Login
Interface fastethernet 0/0
Line console 0
Password cisco
Enable secret cisco
Line vty 0 4
Efer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
It is the IP address of the Router1 interface that connects the company to the Internet.
It is the IP address of Switch1 that connects PC1 to other devices on the same LAN.
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
It is the IP address of the ISP network device located in the cloud.
Which two functions are primary functions of a router? (Choose two.)
Microsegmentation
Packet forwarding
Path selection
Domain name resolution
Flow control
What is the effect of using the Router# copy running-config startup-config command on a router?
The contents of ROM will change.
The contents of flash will change.
The contents of RAM will change.
The contents of NVRAM will change.
What will happen if the default gateway address is incorrectly configured on a host?
The host will have to use ARP to determine the correct address of the default gateway.
The host cannot communicate with hosts in other networks.
The host cannot communicate with other hosts in the local network.
The switch will not forward packets initiated by the host.
A ping from the host to 127.0.0.1 would not be successful.
What are two potential network problems that can result from ARP operation? (Choose two.)
Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network.
Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.
Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port.
Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing.
On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays.
Open the PT activity. Perform the tasks in the activity instructions and then answer the question. Which interfaces in each router are active and operational?
R1: G0/0 and S0/0/0 R2: G0/1 and S0/0/0
R1: G0/0 and S0/0/0 R2: G0/0 and S0/0/0
R1: G0/0 and S0/0/1 R2: G0/1 and S0/0/1
R1: G0/1 and S0/0/1 R2: G0/0 and S0/0/1
Which term describes a field in the IPv4 packet header used to identify the next level protocol?
Destination IPv4 address
TTL
Protocol
Source IPv4 address
Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet?
Destination IPv4 address
Protocol
Source IPv4 address
Differentiated services
Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device?
Destination IPv4 address
TTL
Source IPv4 address
Protocol
Which term describes a field in the IPv4 packet header used to detect corruption in the IPv4 header?
Source IPv4 address
Header checksum
TTL
Protocol
Refer to the exhibit. A network administrator is connecting a new host to the Payroll LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
10.27.14.1
10.27.14.148
10.27.15.17
203.0.113.39
10.14.15.254
Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?
Protocol
Header checksum
TTL
Destination IPv4 address
Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?
TTL
Source IPv4 address
Protocol
Header checksum
Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?
Source IPv4 address
Version
TTL
Protocol
Which term describes a field in the IPv4 packet header used to identify the next level protocol?
Header checksum
Version
Protocol
Differentiated services
Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?
Header checksum
Differentiated services
TTL
Version
What property of ARP causes cached IP-to-MAC mappings to remain in memory longer?
Entries in an ARP table are time-stamped and are purged after the timeout expires.
The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.
The type field 0x806 appears in the header of the Ethernet frame.
A static IP-to-MAC address entry can be entered manually into an ARP table.
What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table?
The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.
Entries in an ARP table are time-stamped and are purged after the timeout expires.
A static IP-to-MAC address entry can be entered manually into an ARP table.
The type field 0x806 appears in the header of the Ethernet frame.
What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table?
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.
The source MAC address appears in the header of the Ethernet frame.
A static IP-to-MAC address entry can be entered manually into an ARP table.
What property of ARP allows hosts on a LAN to send traffic to remote networks?
The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.
Local hosts learn the MAC address of the default gateway.
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The source MAC address appears in the header of the Ethernet frame.
Refer to the exhibit. A network administrator is connecting a new host to the Registrar LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
192.168.234.114
203.0.113.3
10.234.235.254
192.168.235.234
192.168.235.1
What property of ARP forces all Ethernet NICs to process an ARP request?
ARP replies are broadcast on the network when a host receives an ARP request.
The source MAC address appears in the header of the Ethernet frame.
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The type field 0x806 appears in the header of the Ethernet frame.
What property of ARP causes a reply only to the source sending an ARP request?
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
ARP replies are broadcast on the network when a host receives an ARP request.
The source MAC address appears in the header of the Ethernet frame.
The type field 0x806 appears in the header of the Ethernet frame.
What property of ARP causes the request to be flooded out all ports of a switch except for the port receiving the ARP request?
ARP replies are broadcast on the network when a host receives an ARP request.
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The type field 0x806 appears in the header of the Ethernet frame.
Entries in an ARP table are time-stamped and are purged after the timeout expires.
What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?
The type field 0x806 appears in the header of the Ethernet frame.
Entries in an ARP table are time-stamped and are purged after the timeout expires.
ARP replies are broadcast on the network when a host receives an ARP request.
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?
The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
Entries in an ARP table are time-stamped and are purged after the timeout expires.
The type field 0x806 appears in the header of the Ethernet frame.
Refer to the exhibit. A network administrator is connecting a new host to the Service LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
172.29.157.1
10.156.157.254
172.29.157.156
172.29.156.36
198.51.100.177
Refer to the exhibit. A network administrator is connecting a new host to the Medical LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
192.168.190.70
10.190.191.254
192.168.191.189
198.51.100.213
198.51.100.213
Refer to the exhibit. A network administrator is connecting a new host to the Registrar LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
192.168.224.103
203.0.113.246
10.224.225.254
192.168.225.1
192.168.225.223
Refer to the exhibit. A network administrator is connecting a new host to the Manager LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
10.118.62.196
10.118.63.65
209.165.200.87
10.118.62.1
10.62.63.254
Refer to the exhibit. A network administrator is connecting a new host to the Store LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
172.19.98.1
209.165.200.120
172.19.98.230
172.19.99.99
10.98.99.254
Refer to the exhibit. A network administrator is connecting a new host to the Store LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
172.20.133.132
172.20.132.13
172.20.132.1
198.51.100.156
10.132.133.254
Refer to the exhibit. A network administrator is connecting a new host to the Service LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
192.168.167.166
198.51.100.189
192.168.166.46
192.168.167.1
10.166.167.254
Refer to the exhibit. A network administrator is connecting a new host to the Medical LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host?
192.168.200.80
203.0.113.222
192.168.201.200
192.168.201.1
10.200.201.254
Open the PT activity. Perform the tasks in the activity instructions and then answer the question. Which interfaces in each router are active and operational?
R1: G0/0 and S0/0/1 R2: G0/1 and S0/0/1
R1: G0/1 and S0/0/1 R2: G0/0 and S0/0/1
R1: G0/0 and S0/0/0 R2: G0/1 and S0/0/0
R1: G0/0 and S0/0/0 R2: G0/0 and S0/0/0
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