Some Best Routing CCNA Examination Answers Exams solutions
What is the correct order for PDU encapsulation?
- Frame Header-Network Header-Transport Header-Data-Frame Trailler
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 and notices an 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 useable nibble boundaries when subnetting in IPv6? (Choose two.)
- /64
- /68
What will a Layer 2 switch do when the destination MAC address of a received frame is not 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 diagnostic 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
Open the PT activity. Perform the tasks in the activity instructions and then fill in the blank.
The Server0 message is
- Winner
Refer to the exhibit. Which IP addressing scheme should be changed?
- Site 2
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
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode?
- linevtyin
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses console port to connect to the switch, which password is needed to access user EXEC mode?
- linecoin
Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?
- The asterisk designates which file system is the default file system.
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
Refer to the exhibit.
The network administrator enters these commands into the R1 router: R1# copy running-config tftp
Address or name of remote host [ ]?
When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?
- 192.168.11.252
What is the effect of configuring the ipv6 unicast-routing command on a router
- to enable the router as an IPv6 router
Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
- It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
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
Three bank employees are using the 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 corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?.
- audio conference, financial transactions, web page
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 ? (Choose three.)
- 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
A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
- 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? (Choose two.)
- 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? (Choose three.)
- data link layer addressing
- detection of errors through CRC calculations
- delimiting groups of bits into frames
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 My Switch). What prompt will display after the command is issued?
- Switch(config)#
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? (Chaptr 4 exam)
- It encodes frames into electrical, optical, or radio wave signals.
Match the phases to their correct stage in the router setup process. (Not all options are used.)
- Stage 1 - perform the post
- Stage 2 - load the bootstrap program
- Stage 3 - Locate and load the Cisco IOS
- Stage 4 - locate and load the configuration file
Match the description with the associated IOS mode. (Not all options are used.)
user EXEC mode
- limited number of basic monitoring commands
- the first entrance into the CLI of an IOS device
- accessed by entering the enable command
- identified by a prompt ending with the # character
- changes made affect the opperation of the device as a whole
- accessed by entering the configure terminal command
Refer to the exhibit. A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received?
- 306
Match the IPv6 address to the IPv6 address type. (Not all options are used.)
- Link-Local - FE80:056BA:FFEE:A0B4:47FF:FE36:532B and FE80::1
- Multicast - FF02::2 and FF02::1:FF3A:25C9
- Global Unicast - 2DD1:D88:10::12 and 2001:DB8:A1:0B:C78::1
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
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which IPv6 address is assigned to the Serial0/0/0 interface on RT2?
- 2001:db8:abc:5::1
A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
- 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? (Choose two.)
- 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
Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown?
- area C
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
Refer to the exhibit (PC0 and PC1 connected to S1, PC2 and PC3 connected to S2, S1 connected to S2). 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 (port connecting S1 to S2)?
- just PC0 and PC1 MAC addresses
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? (Choose two.)
- 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? (Choose three.)
- 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.
Copper cables
- horizontal cabling structure, desktop PCs in an enterprise office
- backbone cabling in an enterprise, long-haul networks
- guest access in a coffee shop
- waiting rooms in a hospital
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
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