COMMANDS
show process
this term refers to a network management protocol used to dynamically assign an IP address to any device or node on a network, so they can communicate using IP.
DYNAMIC HOST CONFIGURATION PROTOCOL (DHCP)
An administrator pings the default gateway 10.10.10.1. The ping fails.
At which layer of the OSI model did the problem occur?
NETWORK LAYER
This protocol prevents problems caused by loops on a network. It also deals with network changes or failures when redundant loops are planned.
SPANNING TREE PROTOCOL
What are the possible trunking modes for a switch port?
AUTO
ON
DESIRABLE
Which command is used to display the collection of OSPF (OPEN SHORTEST PATH FIRST) link states?
show IP ospf database
When a DHCP server is configured, which two IP addresses should never be assignable to hosts?
network or subnet IP address
designated IP address to the DHCP server
A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network.
The device broadcasts an ARP request. What protocol is used to send the ping?
ICMP
What command enhances the 802.1D convergence time on ports that are connected to hosts?
spanning-tree portfast
it's a communications line or link designed to carry multiple signals simultaneously to provide network access between two points.
trunk
which command reveals the last method used to powercycle a router?
show version
which two tasks does the DHCP protocol perform?
configure IP address parameters from DHCP server to a host
assign and renew ip address from the default pool
The network administrator has asked you to check the status of the workstation's IP stack by pinging the loopback address.
Which address would you ping to perform this task?
127.0.0.1
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?
path cost
You would use this command to configure an interface as a nontrunking nontagged single-VLAN Ethernet or virtual Ethernet interface.
switchport mode
which command would you use on a Cisco router to verify the Layer 3 path to a host?
traceroute address
If an address conflict is detected, this action is done to the address from the pool, and an administrator must resolve the conflict.
the address is removed
[HOST A] ----S0/0[router]S0/0----[HOST B]
The default TTL value for your Cisco router is 255. HOST A pings interface S0/0. What is the new TTL value for that ping
255
Which command enables RSTP on a switch?
spanning-tree ode rapid pvst
An access port can carry traffic in one VLAN only. By default, an access port carries traffic for VLAN 1. To set the access port to carry traffic for a different VLAN, use this command.
the switchport access vlan command.
Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?
cdp run
Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease. What is happening in this process?
This is how a DHCP server dynamically assigns IP addresses to hosts.
[HOST A] ----S0/0[router]S0/0----[HOST B]
The default TTL value for your Cisco router is 255. HOST A pings interface HOST B. What is the new TTL value for that ping
254
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?
converged
This is a default mode on the newer Cisco switches, which means that the interface will actively attempt to convert the link into a trunk link. The interface will become a trunk port if the neighboring interface is set to trunk, or these other two switchport modes.
DESIRABLE
AUTO