Intro to networking
Main(config)# interface gi0/1 Main(config-if)# description Connects to the Service LAN Main(config-if)# ip address 172.29.157.156 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface gi0/0 Main(config-if)# description Connects to the Engineering LAN Main(config-if)# ip address 172.29.156.36 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/0 Main(config-if)# description Connects to the ISP Main(config-if)# ip address 10.156.157.254 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/1 Main(config-if)# description Connects to the Head Office WAN Main(config-if)# ip address 198.51.100.177 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# end 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?
172.29.157.156
Floor(config)# interface gi0/1Floor(config-if)# description Connects to the Registrar LANFloor(config-if)# ip address 192.168.235.234 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# interface gi0/0Floor(config-if)# description Connects to the Manager LANFloor(config-if)# ip address 192.168.234.114 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# interface s0/0/0Floor(config-if)# description Connects to the ISPFloor(config-if)# ip address 10.234.235.254 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# interface s0/0/1Floor(config-if)# description Connects to the Head Office WANFloor(config-if)# ip address 203.0.113.3 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# endRefer 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?
192.168.235.234
What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table?
A static IP-to-MAC address entry can be entered manually into an ARP table.
Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer?
ARP cache
What statement describes the function of the Address Resolution Protocol?
ARP is used to discover the MAC address of any host on the local network.
Why is NAT not needed in IPv6?
Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely low
What happens when the transport input ssh command is entered on the switch vty lines?
Communication between the switch and remote users is encrypted.
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?
Exit privileged EXEC mode and press ENTER
Which destination address is used in an ARP request frame?
FFFF.FFFF.FFFF
Match the packets with their destination IP address to the exiting interfaces on the router
FastEthernet 0/0: FastEthernet 0/1: FastEthernet 1/0: 172.17.12.10 FastEthernet 1/1: Serial0/0/0: 172.17.8.20
When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 can be used to inform the routers and switches to maintain the same path for the packets in the same conversation?
Flow Label
Which statement describes a feature of the IP protocol?
IP relies on upper layer services to handle situations of missing or out-of-order packets.
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 PC1 LAN to Router1.
What property of ARP allows hosts on a LAN to send traffic to remote networks?
Local hosts learn the MAC address of the default gateway.
What are two potential network problems that can result from ARP operation? (Choose two.)
Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays.
Match the phases to the functions during the boot up process of a Cisco router.
Phase 1: perform the POST and load the bootstrap program Phase 2: locate and load the Cisco IOS software Phase 3: locate and load the startup configuration file
Which IOS mode allows access to all commands and features?
Privileged EXEC mode
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 S0/0/0R2: G0/1 and S0/0/0
match the command with the device mode at which the command is entered.
R1> enable R1# copy running-config startup-config R1(config-line)# login R1(config)#interface fastethernet0/0:
What type of interface has no physical port associated with it?
SVI Switch virtual interface
Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly?
TTL
Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?
TTL Time To Live
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 cleared.
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
What information does the loopback test provide?
The TCP/IP stack on the device is working correctly.
Which statement describes the treatment of ARP requests on the local link?
The are received and processed by every device on the local network
A router boots and enters setup mode. What is the reason for this?
The configuration file is missing NVRAM
What is the effect of using the Router# copy running-config startup-config command on a router?
The contents of NVRAM will change.
Within a production network, what is the purpose of configuring a switch with a default gateway address?
The default gateway address is used to forward packets originating from the switch to remote networks.
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 is unknown to the switch. The frame has the broadcast address as the destination address.
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
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 global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?
The switch can be remotely managed from a host on another network.
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 to all ports except port 4.
How do hosts ensure that their packets are directed to the correct network destination?
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
Which is the command to configure a banner to be displayed when connecting to a switch?
banner motd $ Keep out $
Which of the following wireless standards is used for Personal Area Networks (PANs) and allows devices to communicate over distances of 1 to 100 meters?
bluetooth
What is a basic characteristic of the IP protocol?
connectionless
Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in?
ctrl+z & end
What is the structure of an IPv4 address called?
dotted-decimal format
What is one advantage that the IPv6 simplified header offers over IPv4?
efficient packet handling
How is the privileged EXEC mode access secured on a switch?
enable secret class
Wireless LANs operate in full-duplex allowing all devices to send or receive data at the same time so the number of users does not impact performance.
false
Wireless is not well suited for enterprise networks
false
How is an IPv4 address represented?
four decimal numbers between 0 and 255 separated by periods
Which IOS mode are you in if the Switch(config)# prompt is displayed?
global configuration mode
What is the command to assign the name "Sw-Floor-2" to a switch?
hostname Św-floor-2
Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)
line console 0 login password cisco
Which command enables password authentication for user EXEC mode access on a switch?
login
Which of the following fiber-optic cable types can help data travel approximately 500 meters?
multimode
Which of the following fiber-optic cable types is used within a campus network?
multimode
Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?
multimode
Which two types of IPv6 messages are used in place of ARP for address resolution?
neighbor solicitation neighbor advertisement
What IPv4 header field identifies the upper layer protocol carried in the packet?
protocol
Which term describes a field in the IPv4 packet header used to identify the next level protocol?
protocol
What routing table entry has a next hop address associated with a destination network?
remote routes
Which command encrypts all plaintext passwords access on a switch?
service password-encryption
Which of the following fiber-optic cable types can travel approximately 100 km?
single
Which of the following fiber-optic cable types is used to connect long-distance telephony and cable TV applications?
single mode
Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?
single mode
What is the aim of an ARP spoofing attack?
to associate IP addresses to the wrong MAC address
What are two functions of NVRAM?
to store the startup configuration file to retain contents when power is removed
Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?
transport
Which IOS mode are you in if the Switch> prompt is displayed?
user exec mode
Which of the following wireless standards is best suited for industrial and IoT environments?
zigbee
