Introduction to Networks v7.0 – ITNv7 Practice Final Exam Answers

• SSH
• TFTP
• DHCP
• DNS

2. Refer to the exhibit. What does the value of the window size specify?

• the amount of data that can be sent at one time
• the amount of data that can be sent before an acknowledgment is required
• the total number of bits received during this TCP session
• a random number that is used in establishing a connection with the 3-way handshake

• well-known
• private or dynamic
• public
• registered

4. Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?

• The entire command, configure terminal, must be used.
• The administrator is already in global configuration mode.
• The administrator must first enter privileged EXEC mode before issuing the command.
• The administrator must connect via the console port to access global configuration mode.

• if the TCP/IP stack is functioning on the PC without putting traffic on the wire
• if there is connectivity with the destination device
• the path that traffic will take to reach the destination
• what type of device is at the destination

• An SVI is created in software and requires a configured IP address and a subnet mask in order to provide remote access to the switch.
• Although it is a virtual interface, it needs to have physical hardware on the device associated with it.
• SVIs do not require the no shutdown command to become enabled.
• SVIs come preconfigured on Cisco switches.

7. Match the descriptions to the terms. (Not all options are used.)

• The switch notifies the source of the bad frame.
• The switch places the new CRC value in the FCS field and forwards the frame.
• The switch drops the frame.
• The switch floods the frame to all ports except the port through which the frame arrived to notify the hosts of the error.

• The fragment-free switching offers the lowest level of latency.
• Fast-forward switching can be viewed as a compromise between store-and-forward switching and fragment-free switching.
• Fragment-free switching is the typical cut-through method of switching.
• Packets can be relayed with errors when fast-forward switching is used.

• using the incorrect cable type
• half-duplex operations
• a malfunctioning NIC
• electrical interference on serial interfaces
• CRC errors

• places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
• adds Ethernet control information to network protocol data
• implements CSMA/CD over legacy shared half-duplex media
• applies source and destination MAC addresses to Ethernet frame
• integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper

• nslookup cisco.com
• ping cisco.com
• ipconfig /flushdns
• net cisco.com
• nbtstat cisco.com

• Add a second NIC to the web server.
• Add a connection to the Internet via a DSL line to another ISP.
• Add another web server to prepare failover support.
• Add multiple connections between the switches and the edge router.

• copy running-config startup-config
• show interfaces
• show ip nat translations
• show running-config

Floor(config)# interface gi0/1 
Floor(config-if)# description Connects to the Registrar LAN 
Floor(config-if)# ip address 192.168.235.234 255.255.255.0 
Floor(config-if)# no shutdown 
Floor(config-if)# interface gi0/0 
Floor(config-if)# description Connects to the Manager LAN 
Floor(config-if)# ip address 192.168.234.114 255.255.255.0 
Floor(config-if)# no shutdown 
Floor(config-if)# interface s0/0/0 
Floor(config-if)# description Connects to the ISP 
Floor(config-if)# ip address 10.234.235.254 255.255.255.0 
Floor(config-if)# no shutdown 
Floor(config-if)# interface s0/0/1 
Floor(config-if)# description Connects to the Head Office WAN 
Floor(config-if)# ip address 203.0.113.3 255.255.255.0 
Floor(config-if)# no shutdown 
Floor(config-if)# end

• 192.168.235.234
• 203.0.113.3
• 192.168.235.1
• 10.234.235.254
• 192.168.234.114

16. Match the command with the device mode at which the command is entered. (Not all options are used.)

• The IOS image is corrupt.
• Cisco IOS is missing from flash memory.
• The configuration file is missing from NVRAM.
• The POST process has detected hardware failure.

18. What service is provided by POP3?

• Retrieves email from the server by downloading the email to the local mail application of the client.
• An application that allows real-time chatting among remote users.
• Allows remote access to network devices and servers.
• Uses encryption to provide secure remote access to network devices and servers.

• peer-to-peer
• client-based
• master-slave
• point-to-point

20. Which command is used to manually query a DNS server to resolve a specific host name?

• tracert
• ipconfig /displaydns
• nslookup
• net

• bits
• frame
• packet
• segment

22. Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)

• data link
• network
• physical
• session
• transport

23. Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model? (Choose three.)

• presentation
• physical
• network
• data link
• transport
• application
• session

• verifying that there is connectivity within the local network
• creating a network performance benchmark to a server on the company intranet
• determining the path to reach the remote server
• verifying that there is connectivity to the internet

• neighbor solicitation
• router advertisement
• router solicitation
• protocol unreachable
• route redirection

• pinging a host computer that has the IP address 127.0.0.1 on the network
• tracing the path to a host computer on the network and the network has the IP address 127.0.0.1
• checking the IP address on the network card
• testing the integrity of the TCP/IP stack on the local machine

• the virtually unlimited availability of IPv6 addresses
• the use of CSMA/CA
• the use of full-duplex capable Layer 2 switches
• the development of half-duplex switch operation
• the use of Gigabit Ethernet speeds

28. What does a router do when it receives a Layer 2 frame over the network medium?

• re-encapsulates the packet into a new frame
• forwards the new frame appropriate to the medium of that segment of the physical network
• determines the best path
• de-encapsulates the frame

• SFD
• LLC
• CSMA
• MAC
• FCS

• bus
• extended star
• ring
• partial mesh

31. Given network 172.18.109.0, which subnet mask would be used if 6 host bits were available?

• 255.255.192.0
• 255.255.224.0
• 255.255.255.192
• 255.255.255.248
• 255.255.255.252

• link-local
• public
• loopback
• multicast

• subnetwork address
• unicast address
• multicast address
• broadcast address

• Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks.​
• The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.​
• 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.
• Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

• directly-connected routes
• local routes
• remote routes
• C and L source routes

37. Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?

• destination IPv4 address
• protocol
• TTL
• header checksum

• There is no impact on communications.
• The host is unable to communicate on the local network.
• The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
• The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

• fe80:9ea:0:2200::fe0:290
• fe80:9ea0::2020::bf:e0:9290
• fe80::220:b3f:f0e0:29
• fe80:9ea0::2020:0:bf:e0:9290

40. Refer to the exhibit. A user issues the command netstat –r on a workstation. Which IPv6 address is one of the link-local addresses of the workstation?

• ::1/128
• fe80::30d0:115:3f57:fe4c/128
• fe80::/64
• 2001:0:9d38:6ab8:30d0:115:3f57:fe4c/128

41. What type of IPv6 address is represented by ::1/128?

• EUI-64 generated link-local
• global unicast
• unspecified
• loopback

• It supports growth over time in accordance with approved network design procedures.
• It synchronizes traffic flows using timestamps.
• It ensures sensitive corporate data is available for authorized users.
• It prioritizes data flows in order to give priority to delay-sensitive traffic.

• wireless LAN controller
• server
• assembly line robots
• IPS
• gaming console
• retail scanner

• software that is installed on a user device and collects information about the user
• the use of stolen credentials to access private data
• an attack that slows or crashes a device or network service
• a network device that filters access and traffic coming into a network

45. 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 discard the frame.
• The switch will forward the frame to all ports.
• The switch will forward the frame only to port 2.
• The switch will forward the frame only to ports 1 and 3.
• The switch will forward the frame to all ports except port 4.

• 0.0.0.0
• 255.255.255.255
• the physical address of the destination host
• FFFF.FFFF.FFFF
• AAAA.AAAA.AAAA

47. Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

• SW1 will send an ARP reply with its Fa0/1 MAC address.
• RT1 will send an ARP reply with its own Fa0/0 MAC address.
• RT1 will forward the ARP request to PC3.
• RT1 will send an ARP reply with the PC3 MAC address.
• RT1 will send an ARP reply with its own Fa0/1 MAC address.

• a user who is trying to guess a password to access the router
• a worm that is attempting to access another part of the network
• an unidentified individual who is trying to access the network equipment room
• a device that is trying to inspect the traffic on a link

49. Which statement describes the characteristics of packet-filtering and stateful firewalls as they relate to the OSI model?

• A packet-filtering firewall uses session layer information to track the state of a connection, whereas a stateful firewall uses application layer information to track the state of a connection.
• Both stateful and packet-filtering firewalls can filter at the application layer.
• A packet-filtering firewall typically can filter up to the transport layer, whereas a stateful firewall can filter up to the session layer.
• A stateful firewall can filter application layer information, whereas a packet-filtering firewall cannot filter beyond the network layer.

• Empty the browser cache.
• Use antivirus software.
• Delete unused software.
• Keep software up to date.
• Defragment the hard disk.

51. The employees and residents of Ciscoville cannot access the Internet or any remote web-based services. IT workers quickly determine that the city firewall is being flooded with so much traffic that a breakdown of connectivity to the Internet is occurring. Which type of attack is being launched at Ciscoville?

• access
• Trojan horse
• reconnaissance
• DoS

• Fiber-optic cabling does not conduct electricity.
• Multimode fiber-optic cabling carries signals from multiple sending devices.
• Fiber-optic cabling is primarily used as backbone cabling.
• Fiber-optic cabling uses LEDs for single-mode cab​les and laser technology for multimode cables.
• Fiber-optic cabling has high signal loss.

• latency
• goodput
• throughput
• bandwidth

54. Refer to the exhibit. What is the maximum possible throughput between the PC and the server?

• 10 Mb/s
• 1000 Mb/s
• 128 kb/s
• 100 Mb/s

55. Match the description with the media. (Not all options are used.)