ITA Ch.8-10 Pt.2

52. Which term describes a field in the IPv4 packet header used to detect corruption in the IPv4 header? header checksum source IPv4 address protocol TTL

A

50. 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? differentiated services destination IPv4 address source IPv4 address protocol

A

60. 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. 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. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

A

66. What property of ARP causes the request to be flooded out all ports of a switch except for the port receiving the 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. ARP replies are broadcast on the network when a host receives an ARP request.

A

44. Which two functions are primary functions of a router? (Choose two.) packet forwarding microsegmentation domain name resolution path selection flow control

A, D

64. What property of ARP forces all Ethernet NICs to process an ARP request? 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. The type field 0x806 appears in the header of the Ethernet frame. ARP replies are broadcast on the network when a host receives an ARP request.

A

67. 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. 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. ARP replies are broadcast on the network when a host receives an ARP request

A

29. Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer? neighbor table ARP cache routing table MAC address table

B

38. 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 will have a management interface with the address 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 is limited to sending and receiving frames to and from the gateway 172.16.100.1.

B

39. What happens when the transport input ssh command is entered on the switch vty lines? The SSH client on the switch is enabled. Communication between the switch and remote users is encrypted. The switch requires a username/password combination for remote access. The switch requires remote connections via a proprietary client software.

B

51. 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 source IPv4 address protocol TTL

B

54. Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address? protocol destination IPv4 address TTL header checksum

B

59. What property of ARP causes cached IP-to-MAC mappings to remain in memory longer? A static IP-to-MAC address entry can be entered manually into an ARP table. 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. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

B

47. What are two potential network problems that can result from ARP operation? (Choose two.) 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. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic. Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network. 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.

B, C

What are two functions of NVRAM? (Choose two.) to store the routing table to retain contents when power is removed to store the startup configuration file to contain the running configuration file to store the ARP table

B, C

3. Refer 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 the Router1 interface that connects the PC1 LAN to Router1. It is the IP address of Switch1 that connects PC1 to other devices on the same LAN. It is the IP address of the ISP network device located in the cloud

C

30. What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward? source MAC address source IP address destination MAC address Ethernet type destination IP address

C

37. A router boots and enters setup mode. What is the reason for this? 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.

C

45. 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 RAM will change. The contents of NVRAM will change. The contents of flash will change.

C

49. Which term describes a field in the IPv4 packet header used to identify the next level protocol? destination IPv4 address source IPv4 address protocol TTL

C

55. Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet? source IPv4 address protocol TTL header checksum

C

62. What property of ARP allows hosts on a LAN to send traffic to remote networks? 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. Local hosts learn the MAC address of the default gateway. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

C

42. Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.) interface fastethernet 0/0 line vty 0 4 line console 0 enable secret cisco login password cisco

C, E, F

46. What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with other hosts in the local network. The switch will not forward packets initiated by the 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. A ping from the host to 127.0.0.1 would not be successful.

D

56. Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100? source IPv4 address protocol TTL version

D

65. 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. The type field 0x806 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.

D

32. 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? Reboot the device. Enter CTRL-Z at the privileged mode prompt. Exit global configuration mode. Power cycle the device. Exit privileged EXEC mode and press Enter.

E