Cisco 1 Final Batch 1 Flashcards
What destination MAC address would be included in a frame sent from a source device to a destination device on a remote local network?
The MAC address of the local router interface.
What two protocols are used to determine the MAC address of a known destination device IP address (IPv4 and IPv6)?
ARP and ND
What destination MAC address would be included in a frame sent from a source device to a destination device on the same local network?
The MAC address of the destination device.
What two functions are provided by ARP? (Choose two.)
Maintains a table of IPv4 to MAC address mappings and Resolves IPv4 addresses to MAC addresses
Where is the ARP table stored on a device?
RAM
Which statement is true about ARP?
ARP entries are cached temporarily.
Which command could be used on a Cisco router to view its ARP table?
Show ip arp
What is an attack using ARP?
ARP Poisoning
Which two ICMPv6 messages are used in SLAAC?
Router Advertisement and Router Solicitation
To what type of address are ICMPv6 neighbor solicitation messages sent?
Multicast
Which router component holds the routing table, ARP cache, and running configuration file?
RAM
What type of information is contained in an ARP table?
IPv4 address to MAC address mappings
A PC is configured to obtain an IPv4 address automatically from network 192.168.1.0/24. The network administrator issues the arp –a command and notices an entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. Which statement describes this entry?
This is a static map entry.
A cybersecurity analyst believes an attacker is spoofing the MAC address of the default gateway to perform a man-in-the-middle attack. Which command should the analyst use to view the MAC address a host is using to reach the default gateway
Arp –a
What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?
It forwards the frame out of all ports except for the port at which the frame was received.
Which two ICMPv6 messages are used during the Ethernet MAC address resolution process? (Choose two.)
Neighbor advertisement and Router Solicitation
How does the ARP process use an IPv4 address?
To determine the MAC address of a device on the same network.
What is one function of the ARP protocol?
Resolving an IPv4 address to a MAC address.
Which action is taken by a Layer 2 switch when it receives a Layer 2 broadcast frame?
It sends the frame to all ports except the port on which it received the frame.
What addresses are mapped by ARP?
IPv4 address to a destination MAC address.
When an IPv4 packet is sent to a host on a remote network, what information is provided by ARP?
The MAC address of the router interface closest to the sending host
The ARP table in a switch maps which two types of address together?
Layer 3 address to Layer 2 address
What is the purpose of ARP in an IPv4 network
To obtain a specific MAC address when an IP address is known.
Which destination address is used in an ARP request frame?
FFFF.FFFF.FFFF
A router boots and enters setup mode. What is the reason for this?
The configuration file is missing from NVRAM.
Which command is used to encrypt all passwords in a router configuration file?
Router_A (config) # service password-encryption
Company policy requires using the most secure method to safeguard access to the privileged exec and configuration mode on the routers. The privileged exec password is trustknow1. Which of the following router commands achieves the goal of providing the highest level of security?
enable secret trustknow1
What will be the response from the router after the command, “router(config)# hostname portsmouth” is entered?
portsmouth(config)#
An administrator is configuring a new router to permit out-of-band management access. Which set of commands will allow the required login using a password of cisco?
Router(config)# line console 0, Router(config-line)# password cisco, Router(config-line)# login
Which command can be used on a Cisco router to display all interfaces, the IPv4 address assigned, and the current status?
show ip interface brief
Which CLI mode allows users to access all device commands, such as those used for configuration, management, and troubleshooting?
privileged EXEC mode
What is the purpose of the startup configuration file on a Cisco router?
to contain the commands that are used to initially configure a router on startup
Which characteristic describes the default gateway of a host computer?
the logical address of the router interface on the same network as the host computer
What is the purpose of the banner motd command?
It provides a way to make announcements to those who log in to a router.
A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?
any line configuration mode
