Cisco Intro to Networking Final Review (ICND1)

A student is attempting to access an 802.11n wireless network. What method is used to manage contention-based access on this wireless network?

CSNA/CA

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 small business 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

What is the significance of the asterisk (*) in the "show file systems" output?

Designates which file system is the default file system.

Which field in an IPv4 packet header will typically stay the same during its transmission?

Destination address.

Which function is provided by TCP?

Detection of missing packets.

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.

Which address on a PC does not change, even if the PC is moved to a different network?

Mac address

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 technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?

NAT

In which default order will a router search for startup configuration information?

NVRAM, TFTP, setup mode.

network media

Network media is the actual path over which an electrical signal travels as it moves from one component to another. This chapter describes the common types of network media, including twisted-pair cable, coaxial cable, fiber-optic cable, and wireless.

A ping to PC3 is issued from PC0,PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?

PC0 and PC1 MAC address

The greatest part of the /8 block IPv4 address bit space consists of what types of addresses?

Private addresses

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 diagnostic software.

During normal operation, from which location do most Cisco switches and routers run the IOS?

RAM.

Which connection provides a secure CLI session with encryption to a Cisco network device?

SSH connection

Which type of wireless security generates dynamic encryption keys each time a client associates with an AP?

WPA

Which two notations are useable nibble boundaries when subnetting in IPv6?

/64 /68

Which three IP addresses are private?

1.) 172.16.4.4 2.) 10.1.1.1 3.) 192.168.5.5

Three office workers are using corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other office workers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?

1.) Audio conference 2.) Web page 3.) Financial transactions

What two preconfigured settings that affect security are found on most new wireless routers?

1.) Broadcast SSID 2.) Default administrator password

What are the three primary functions provided by Layer 2 data encapsulation?

1.) Detection of errors through CRC calculations. 2.) Data link layer addressing. 3.) Delimiting groups of bits into frames.

Stage of router boot process

1.) Perform Power-on self test (POST) and load the bootstrap program. 2.) Locate and load the Cisco IOS software. 3.) Locate and execute the startup configuration file orenter setup mode.

A host is accessing a web server on a remote network. Which three functions are performed by intermediary network devices during this conversation?

1.) Regenerating data signals 2.) Providing a channel over which messages travel 3.) Notifying other devices when errors occur

A network technician is measuring the transfer of bits across the company backbone for a mission critical application. The technician notices that the network throughput appears lower that the bandwidth expected. Which three factors could influence the differences in throughput?

1.) The amount of traffic that is currently crossing the network 2.) The type of traffic that is crossing the network. 3.) The latency that is created by the number of network devices that the data is crossing.

Which two components are necessary for a wireless client to be installed on WLAN?

1.) Wireless NIC 2.) Wireless client software

Which subnet would include the address 192.168.1.64 as a usable host address?

192.168.1.64/26

which IPv6 address is assigned to the Serial0/0/0 interface on RT2?

2001:db8:abc:5::1

A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return from TCP segment that has been received?

306

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.

What will a layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?

Forwards the frame out of all the ports except for the port at which the frame was receive.

What is the correct order for PDU encapsulation?

Frame header, network header, transport header, data, frame tailor.

Refer to the exhibit. An administrator wants to change the name of a brand new switch, using the hostname command as shown (Switch(config)# hostname HR Switch). What prompt will display after the command is issued?

HR(config)#

A particular email site 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/display DNS

What is an important function of the physical layer of the OSI model?

It encodes frames into electrical, optical, or radio wave signals.

Description of the default gateway address?

It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.

What is a characteristic of LLC sublayer?

It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.

A technician uses the ping 127.0.0.1 command. What is the technician testing?

The TCP/IP stack on a network host

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 will happen if the default gateway address is incorrectly configured on a host?

The host cannot communicate with hosts in other networks.

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

After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

The new configuration will be loaded if the switch is restarted.

A PC is configured to obtain an IP address automatically from network 192.168.2.0/24. The network administrator issues the arp -a command and notices an entry of 192.168.2.244 ff-ff-ff-ff-ff-ff. Which statement describes this entry?

This is a static mat entry

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 is the effect of configuring the ipv6 unicast-routing command on a router?

To enable the router as an ipv6 router

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.

What is the purpose of the network security authorization function?

To keep track of the actions of a user.

What is the purpose of ICMP messages?

To provide feedback of IP packet transmissions

What is the purpose of having a converged network?

To reduce the cost of deploying and maintaining the communication infrastructure.

What is the purpose of the routing process?

To select the paths that are used to direct traffic to destination networks

What happens when part of an Internet VoIP transmission is not delivered to the destination?

Transmission continues without the missing portion.

Which procedure is used to reduce the effect of crosstalk in copper cables?

Twisting opposing circuit wire pairs together

On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?

VLAN1