networks
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose three.) *integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper * handles communication between upper layer networking software and Ethernet NIC hardware * implements CSMA/CD over legacy shared half-duplex media * applies source and destination MAC addresses to Ethernet frame * applies delimiting of Ethernet frame fields to synchronize communication between nodes
* integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper * handles communication between upper layer networking software and Ethernet NIC hardware * applies source and destination MAC addresses to Ethernet frame
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
255.255.255.192
What are two features of ARP? (Choose two.)
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
Which two statements describe features of an IPv4 routing table on a router? (Choose two.) Directly connected interfaces will have two route source codes in the routing table: C and S . If there are two or more possible routes to the same destination, the route associated with the higher metric value is included in the routing table. The netstat -r command can be used to display the routing table of a router. The routing table lists the MAC addresses of each active interface.It stores information about routes derived from the active router interfaces. If a default static route is configured in the router, an entry will be included in the routing table with source code S .
It stores information about routes derived from the active router interfaces. If a default static route is configured in the router, an entry will be included in the routing table with source code S .
A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the ARP cache. How will the device obtain a destination MAC address?
It will send an ARP request for the MAC address of the default gateway.
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?
The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?
The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.
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.
What are two functions that are provided by the network layer? (Choose two.) directing data packets to destination hosts on other networks placing data on the network medium carrying data between processes that are running on source and destination hosts providing dedicated end-to-end connections providing end devices with a unique network identifier
directing data packets to destination hosts on other networks providing end devices with a unique network identifier
What are two functions that are provided by the network layer? (Choose two.)
directing data packets to destination hosts on other networks providing end devices with a unique network identifier
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements CSMA/CD over legacy shared half-duplex media
What are two common causes of signal degradation when using UTP cabling? (Choose two.)
low-quality cable or connectors improper termination
What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)message sizemessage encodingconnector specificationsmedia selectiondelivery optionsend-device installation
message size message encoding delivery options
What is a function of the data link layer?
provides for the exchange of frames over a common local media
When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?
store-and-forward
During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
switch the packet to the directly connected interface
