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CCNA 840-822 Q/A Cards
Cards from Pass 4 Sure Q/A
53
Computer Networking
Professional
05/16/2011

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Cards

Term
What is the first server a windows computer tries to contact to resolve an internet website URL to an IP Address?
Definition
Primary WINS server
Term
What is the purpose of assigning an IP address to a switch?
Definition
It allows remote management of the switch
Term
What is the effect of using the service password-encryption command?
Definition
It will encrypt all current and future passwords
Term
Why would a network administrator configure port security on a switch?
Definition
To prevent unauthorized hosts from accessing the LAN
Term
What command allows an administrator to verify the application layer connectivity between source and destination?
Definition
telnet
Term
What command do you use to determine the type of cable attached to the Serial 0/0 interface on a router?
Definition
show controllers serial 0/0
Term
Which router command can be used to determine the status of serial 0/0?
Definition
show interfaces
Term
Which protocol will be used by a network host to resolve a destination IPv4 address to a destination MAC address?
Definition
ARP
Term
Which two pairs of wires crossed at opposite ends of a UTP cable make a proper Ethernet 10/100 Crossover cable?
Definition
1 and 3, 2 and 6
Term
What type of attack is characterized by a flood of packets that are requesting a TCP connection to a server?
Definition
Denial of Service
Term
What additional configuration step is needed to connect to an access point that has SSID broadcast disabled?
Definition
Set the SSID on the client to the same as the SSID on the AP
Term
What form of NAT maps multiple private IP addresses to a single registered IP addresses by using different ports?
Definition
overloading
Term
From where does a small network get its IP address?
Definition
?Internet Service Provider
Term
Which OSI Layer header contains the address of a destination host that is on another network?
Definition
Network
Term
What is the purpose of the default route?
Definition
It is the route used when a packet is destined for a remote network that is not listed in the routing table
Term
In the configuration of NAT, what does the keyword overload signify?
Definition
Multiple internal hosts will use one IP address to access external network resources
Term
What are routers most concerned with?
Definition
The next hop
Term
While moving from one access point to another what wireless design feature will ensure that a mobile wireless client will not lose connectivity?
Definition
Overlap in cell coverage
Term
Which command is used on a Cisco router to reach the global configuration mode?
Definition
Router#configure terminal
Term
After POST is run, what does an amber system LED on a switch mean?
Definition
POST has failed and there is a problem preventing the operating system from being loaded
Term
What type of cable should be used to connect two switches?
Definition
Crossover
Term
What two output fields are helpful in determining if a broadcast storm has occured?
Definition
no buffer and ignored
Term
What two practices help secure the configuration utilities on wireless access points from unauthorized users?
Definition
changing the default SSID value, and configuring a new admin password
Term
What three things are found in a TACP header, but not a UDP header?
Definition
Sequence number, acknowledgement number, window size
Term
A PC is attached to the console port of a new Cisco router. The router is powered on. If the PC has been configured correctly for a console connection, what will the router display after it powers up?
Definition
The option to enter initial system configuration information
Term
Which router command can be used to determine the status of Serial 0/0?
Definition
show interfaces
Term
If a switch receives a frame in which neither the source or the destination MAC address are in the MAC address table, what action will the switch take?
Definition
The source mac address will be added to the MAC address table and the frame will be forwarded out of all ports except the port it came from
Term
When a host is sending a frame to another machine for the first time, what is the destination MAC address?
Definition
ff-ff-ff-ff
Term
Which router on a network should always have a static route?
Definition
The ISP router
Term
What is the purpose of flow control?
Definition
to provide a means for the receiver to govern the amount of data sent by the sender
Term
The _____________ command is a requirement for DCE interfaces.
Definition
clock rate
Term
Which IOS command is used to initiate a login into a VTY port on a remote router?
Definition
router#telnet
Term
What command will allow an administrator to check the changes that have been made to a router prior to saving the configuration?
Definition
Router#show running-config
Term
What three commands will show information about the IOS software version currently running on a router?
Definition
show running-config, show version, show flash
Term
What command sets the password for privileged mode on a router?
Definition
enable secret
Term
what is the command that will cause r1 to replace its IOS image?
Definition
R1#copy tftp flash
Term
What command will back up the current IOS image?
Definition
R1#copy flash tftp
Term
What command will make a backup copy of the current configuration in RAM?
Definition
R1#copy running-config tftp
Term
What command will make the configuration in RAM the configuration used by the router at startup?
Definition
R1#copy running-config startup-config
Term
What command will merge the backup configuration of a router with the configuration in RAM?
Definition
R1#copy tftp running-config
Term
If a DHCP server's settings have recently been changed, and a client is no longer able to reach network resources, what should be done to correct this situation?
Definition
issue the ipconfig command with the /release and /renew options in a command window
Term
What router port does a WAN T1 connection use?
Definition
Serial 0
Term
What OSI layer does the CDP protocol operate on?
Definition
Layer 2/Data Link Layer
Term
__________ encapsulation is recommended for serial links between equipment from multiple vendors.
Definition
PPP
Term
What does the "Inside Global" address represent in the configuration of NAT?
Definition
A registered address that represents an inside host to an outside network
Term
In a Frame Relay point to point subinterface, ______ subnet(s) is mapped per DLCI
Definition
one
Term
The Frame Relay subinterface resolves _______________ issues
Definition
NBMA split horizon
Term
What is the problem if you cannot ping the loopback address?
Definition
a TCP/IP problem
Term
What command will set the default gateway on a Cisco switch?
Definition
Switch(config)#ip default-gateway
Term
What type of cable is used to connect a router directly to the server?
Definition
Crossover
Term
What command will disable CDP in an interface?
Definition
(config-if)#no cdp enable
Term
What type of cable is used to connect a PC to a router?
Definition
crossover
Term
Where are ICMP packets encapsulated?
Definition
IP datagrams
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