CCNA Intro to networks modules 8-10
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Which destination address is used in an ARP request frame?
Time-to-Live
Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly?
IP relies on upper layer services to handle situations of missing or out-of-order packets.
Which statement describes a feature of the IP protocol?
They are received and processed by every device on the local network.
Which statement describes the treatment of ARP requests on the local link?
version
Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?
line console 0 password cisco login
Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)
packet forwarding path selection
Which two functions are primary functions of a router? (Choose two.)
neighbor advertisement neighbor solicitation
Which two types of IPv6 messages are used in place of ARP for address resolution?
Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.
Why is NAT not needed in IPv6?
The computer has an invalid default gateway address.
A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?
Exit privileged EXEC mode and press Enter .
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?
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.
How do hosts ensure that their packets are directed to the correct network destination?
The switch can be remotely managed from a host on another network.
The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?
to retain contents when power is removed to store the startup configuration file
What are two functions of NVRAM? (Choose two.)
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.
What are two potential network problems that can result from ARP operation? (Choose two.)
routing packets toward the destination encapsulating PDUs from the transport layer
What are two services provided by the OSI network layer? (Choose two.)
Communication between the switch and remote users is encrypted.
What happens when the transport input ssh command is entered on the switch vty lines?
destination MAC address
What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?
The contents of NVRAM will change.
What is the effect of using the Router# copy running-config startup-config command on a router?
remote routes
What routing table entry has a next hop address associated with a destination network?
ARP is used to discover the MAC address of any host on the local network.
What statement describes the function of the Address Resolution Protocol?
The host cannot communicate with hosts in other networks.
What will happen if the default gateway address is incorrectly configured on a host?
Flow Label
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?