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Cisco Final

Final Exam Study Guide

QuestionAnswer
What is the correct order for PDU encapsulation? Frame Header, Network Header, Transport Header, Data, Frame Trailer
A PC is configured to obtain an IP address automatically from network 192.168.1.0/24. The network administrator issues the arp -a command an notices n entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. Which statement describes this entry? This is a static map entry
Which two notations are usable nibble boundaries when subnetting in IPv6? /64 /68
What will a layer 2 switch do when the destination MAC address of a received frame is not in the in the MAC table? It forwards the frame out of all ports except for the port at which the frame was received.
Which two statements correctly describe a router memory type and its contents? RAM is volatile and stores the IP routing table. ROM is nonvolatile and contains basic diagnostics software.
What is the auto-MDIX feature on a switch? the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection.
What is the purpose of the routing process? to select the paths that are used to direct traffic to destination networks.
What is the purpose of ICMP messages? to provide feedback of IP packet transmissions
Which subnet would include the address 192.168.1.96 as a usable host address? 192.168.1.64/26
Which subnet would include the address 192.168.1.192 as a usable host address? 192.168.1.128/25
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes? to interrupt the ping process
When applied to a router, which command would help mitigate brute-force password attacks against the router? login block-for 60 attempts 5 within 60
A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? 192.168.1.64/27 192.168.1.96/28
which field in an IPv4 packet header will typically stay the same during its transmission? Destination Address
What is the effect of configuring the IPv6 unicast-routing command on a router? to enable the router as an IPv6 router
which procedure is used to reduce the effect of crosstalk in copper cables? twisting opposing circuit wire pairs together
What happens when part of an Internet Radio transmission is not delivered to the destination? the transmission continues without the missing portion.
Which address on a PC does not change, even if the PC is moved to a different network? MAC address
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details? Request for Comments
Which three IP addresses are private ? 172.16.4.4 10.1.1.1 192.168.5.5
What is the purpose of the network security accounting function? to keep track of the actions of a user
How does a Layer 3 switch differ from a Layer 2 switch? An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.
Which connection provides a secure CLI session with encryption to a Cisco switch? an SSH connection
The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? the amount of traffic that is currently crossing the network the type of traffic that is crossing the network number of network devices that the data is crossing
A host PC has just booted and is attempting to lease an address through DHCP. Which two messages will the client typically broadcast on the network? DHCPREQUEST DHCPDISCOVER
A host PC has just booted and is attempting to lease an address through DHCP. Which message will the client broadcast first on the network? DHCPDISCOVER
What are the three primary functions provided by Layer 2 data encapsulation? data link layer addressing detection of errors through CRC calculations delimiting groups of bits into frames
Which type of wireless security generates dynamic encryption keys each time a client associates with an AP? WPA
A particular website does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page? ipconfig /displaydns
What is an important function of the physical layer of the OSI model? It encodes frames into electrical, optical, or radio wave signals.
What is a characteristic of the LLC sublayer? It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely? VLAN 1
During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a _____ message multicast
Which function is provided by TCP? detection of missing packets
A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? regenerating data signals providing a channel over which messages travel notifying other devices when errors occur
In which default order will a router search for startup configuration information? NVRAM, TFTP, setup mode
What two preconfigured settings that affect security are found on most new wireless routers? broadcast SSID default administrator password
What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with hosts in other networks.
What is the purpose of having a converged network? to reduce the cost of deploying and maintaining the communication infrastructure
After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command? The new configuration will be loaded if the switch is restarted.
Which parameter does the router use to choose the path to the destination when there are multiple routes available? the lower metric value that is associated with the destination network
During normal operation, from which location do most Cisco switches and routers run the IOS? RAM
Which two components are necessary for a wireless client to be installed on a WLAN? wireless NIC wireless client software
A technician uses the ping 127.0.0.1 command. What is the technician testing? the TCP/IP stack on a network host
Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address? NAT
A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame? to check the frame for possible transmission errors
What method is used to manage contention-based access on a wireless network? CSMA/CA
Which three statements characterize the transport layer protocols? TCP and UDP port numbers are used by application layer protocols. TCP uses windowing and sequencing to provide reliable transfer of data. TCP is a connection-oriented protocol. UDP is a connectionless protocol.
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used? DSL
Created by: kb17094