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DsmbISP Chapter 6 - (Version 4.1)

Posted by BenMuha Go Blog on Friday, 5 September 2014 Label: ,


1. What is the purpose of a routing protocol?
*It allows a router to share information about known networks with other routers.


2. Why is fast convergence desirable in networks that use dynamic routing protocols?
*Routers may make incorrect forwarding decisions until the network has converged.


3. In which situation would a company register for its own autonomous system number (ASN)?
*when the company uses two or more ISPs


4. What term refers to a group of networks that uses the same internal routing policies and is controlled by a single administrative authority?
*autonomous system


5. Which protocol is an exterior routing protocol?
*BGP


6. What device enables an ISP to connect with other ISPs to transfer data?
*border gateway router


7. Which part of an IP packet does the router use to make routing decisions?
*destination IP address


8. What statement is true regarding an AS number?
*AS numbers are controlled and registered for Internet use.


9. Which routing protocol is used to exchange data between two different ISPs?
*BGP


10. Consider this routing table entry:


R 172.16.1.0/24 [120/1] via 200.1.1.1 00:00:27 Serial0/1


What type of route is this?
*a RIP route


11. Refer to the exhibit. If all routers are running RIP and network 10.0.0.0 goes down, when will R3 learn that the network is no longer available?
*immediately


12. What information is included in RIPv2 routing updates that is not included in RIPv1 updates?
*subnet mask


13. What two types of businesses would benefit from registering as their own autonomous systems? (Choose two.)
*a global business with connections to multiple local ISPs
*a medium-sized nationwide business with Internet connectivity through different ISPs


14. Which two statements describe static routes? (Choose two.)
*They require manual reconfiguration to accommodate network changes.
*They are identified in the routing table with the prefix S


15. What is the difference between interior and exterior routing protocols?
*Interior routing protocols are used to communicate within a single autonomous system.


16. Refer to the exhibit. Which configuration command or commands contributed to the output that is shown?
*routerA(config-router)# network 192.168.3.0


17. Refer to the exhibit. All of the routers are running RIP. There are two paths from router A to the 192.168.3.0 network. Based on the output of the show ip route command on router A, which route was entered into the routing table and why?
*A,B,C,D because it has the lowest metric


18. What is the purpose of the network command in configuring RIP?
*to identify the directly connected networks that will be announced in RIP updates


19. Refer to the exhibit. If connectivity between the two hosts is maintained, what is the maximum number of RIP routers that can be in the path from HostA to HostB?
*15


20. Refer to the exhibit. Router B receives a packet with a destination address of 10.16.1.97. What will router B do?
*use the default route

DsmbISP Chapter 7 - (Version 4.1)

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1. A client is communicating with a server on a different segment of the network. How does the server determine what service is being requested by the client?
*identifies the appropriate service from the destination port field


2. What is the function of the TCP three-way handshake?
*It synchronizes both ends of a connection by allowing both sides to agree upon initial sequence numbers.


3. What are three unique characteristics of UDP? (Choose three.)
*low overhead
*no flow control
*no error-recovery function


4. Within TCP, what combination makes up a socket pair?
*source IP address and port with a destination IP address and port


5. What type of update allows client computers to register and update their resource records with a DNS server whenever changes occur?
*dynamic


6. Which DNS zone resolves an IP address to a qualified domain name?
*reverse lookup


7. Which two tasks are the responsibility of the local DNS server? (Choose two.)
*mapping name-to-IP addresses for internal hosts
*forwarding name resolution requests to a caching-only server


8. Which protocol is used to send e-mail, either from a client to a server or from a server to another server?
*SMTP


9. A manufacturing company subscribes to certain hosted services from their ISP. The services required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)
*FTP
*HTTP
*SMTP


10. To meet customer expectations, an ISP must guarantee a level of service that is based on what two factors? (Choose two.)
*availability
*reliability


11. Which two statements are true about the OSI and TCP/IP models? (Choose two.)
*The OSI network layer is comparable to the Internet layer of the TCP/IP model.
*The TCP/IP model is based on four layers and the OSI model is based on seven layers.


12. What type of DNS server is typically maintained by an ISP?
*caching-only


13. Which two options correctly match protocol and well-known port number? (Choose two.)
*HTTP - 80
*SMTP - 25


14. What are three characteristics of HTTPS? (Choose three.)
*It supports authentication.
*It encrypts packets with SSL.
*It requires additional server processing time.


15. User1 is sending an e-mail to User2@cisco.com. What are two characteristics of the process of sending this data? (Choose two.)
*It utilizes a store and forward process.
*SMTP is used to send the e-mail message to the mail servers.


16. Which three fields do a TCP header and a UDP header have in common? (Choose three.)
*source port
*checksum
*destination port


17. When a host is communicating with multiple applications on the same server at the same time, which two values will likely be the same in all packets for each session? (Choose two.)
*IP address
*MAC address


18. What are three characteristics of network reliability? (Choose three.)
*Redundant hardware provides enhanced reliability.
*Fault tolerance is a measure of reliability.
*The longer the MTBF, the greater the reliability.


19. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
*Host2 sends a SYN-ACK message to Host1.


20. Refer to the exhibit. The PC is requesting HTTP data from the server. What is a valid representation of source and destination sockets for this request?
*Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:80


21. Refer to the exhibit. Which two statements are true about this file? (Choose two.)
*The command ping fileserv will use IP address 172.16.5.10.
*If the ping www.cisco.com command is issued, the file will be checked for the Cisco web server IP address.

DsmbISP Chapter 8 - (Version 4.1)

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1. Which benefit does SSH offer over Telnet when remotely managing a router?
*encryption


2. Which means of communication does an SNMP network agent use to provide a network management station with important but unsolicited information?
*trap


3. What is the term used to describe the area of a network which stores servers that are accessible to any users from the Internet?
*DMZ


4. Before a technician upgrades a server, it is necessary to back up all data. Which type of backup is necessary to ensure that all data is backed up?
*full


5. A company wants to configure a firewall to monitor all channels of communication and allow only traffic that is part of a known connection. Which firewall configuration should be deployed?
*stateful packet inspection




6. Which three protocols describe methods that can be used to secure user data for transmission across the internet? (Choose three.)
*IPSEC
*SSL
*HTTPS


7. What network layer security protocol can secure any application layer protocol used for communication?
*IPSEC


8. Which three items are normally included when a log message is generated by a syslog client and forwarded to a syslog server? (Choose three.)
*date and time of message
*ID of sending device
*message ID


9. What AAA component assigns varying levels of rights to users of network resources?
*authorization


10. A network administrator is assigning network permissions to new groups of users and employing the principle of least privilege. Which two actions should the administrator take? (Choose two.)
*Provide users with only the access to resources required to do their jobs.
*Provide the minimum level of permissions required for users to do their jobs.


11. A hacker has gained access to sensitive network files. In analyzing the attack, it is found that the hacker gained access over a wireless segment of the network. It is further discovered that the only security measure in place on the wireless network is MAC Address Filtering. How is it likely that the hacker gained access to the network?
*The hacker obtained the MAC address of a permitted host, and cloned it on his wireless laptop NIC.


12. What is the advantage of using WPA to secure a wireless network?
*It uses an advanced encryption key that is never transmitted between host and access point.


13. hat are two potential problems with using tape media to back up server data? (Choose two.)
*Data tapes are prone to failure and must be replaced often.
*Tape drives require regular cleaning to maintain reliability.


14. Refer to the exhibit. While the user on router A is connected to router B through telnet, the CTRL-SHIFT-6 x keystroke is entered. What effect does this have?
*It suspends the connection to router B.


15. What two measures help to verify that server backups have been successfully completed? (Choose two.)
*reviewing backup logs
*performing a trial restore


16. Which three applications can be used for in-band management? (Choose three.)
*HTTP
*SNMP
*Telnet


17. Which two characteristics of network traffic are being monitored if a network technician configures the company firewall to operate as a packet filter? (Choose two.)
*ports
*protocols


18. Which AAA service provides detailed reporting and monitoring of network user behavior, and also keeps a record of every access connection and device configuration change across the network?
*accounting


19. While downloading an IOS image from a TFTP server, an administrator sees long strings of exclamation marks (!) output to the console. What does this mean?
*The transfer is working.


20. What does the command copy flash tftp accomplish?
*It copies the IOS in flash to a TFTP server.

DsmbISP Chapter 9 - (Version 4.1)

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1. Refer to the exhibit. What are two possible causes for the interface status? (Choose two.)
*The encapsulation type is mismatched.
*Keepalive messages are not being received.


2. A network administrator is upgrading a Cisco 1841 router by adding a WIC-2T module card. Which show command can the administrator use to verify that the module is correctly recognized by the router?
*show version.


3. Which two conditions identify issues that are confined to Layer 1? (Choose two.)
*cables that exceed maximum length.
*poor termination of cables.


4. Refer to the exhibit. Which three statements are true about the output of the show ip interface brief command? (Choose three.)
*FastEthernet0/0 is functioning correctly.
*The shutdown command has been applied on Serial0/0.
*FastEthernet0/1 is experiencing a Layer 2 network problem.


5. A network administrator plugs a new PC into a switch port. The LED for that port changes to solid green. What statement best describes the current status of the port?
*The port is operational and ready to transmit packets.


6. A user is having trouble accessing the Internet. A network administrator begins by verifying that the IP address of the PC is correctly configured. Next the administrator pings the default gateway. Based on this information, what type of troubleshooting method is the administrator employing?
*divide-and-conquer.


7. A user can access any web page on the Internet but cannot access e-mail. What troubleshooting method would be most efficient for troubleshooting this issue?
*top-down


8. Which problem is associated with Layer 4 of the OSI model?
*A firewall is blocking Telnet packets to a host.


9. An administrator is creating a lab to simulate a WAN connection. During the setup, the administrator notices that there are different encapsulation types on each end of the serial connection. At what layer of the OSI model is this problem occurring?
*Layer 2.


10. A PC is able to reach devices that are located both inside and outside the network. However, when trying to reach an FTP server that is located on the same subnet, the PC fails to make a connection. The administrator has several other PCs that are located in the same subnet try a connection to the FTP server and they are successful. Which troubleshooting tool can be used to determine the problem between the PC and the FTP server?
*protocol analyzer.


11. Refer to the exhibit. Which IP address is misconfigured and is causing connectivity problems between hosts and servers?
*Server2


12. Refer to the exhibit. Users on the 10.12.10.0/24 network are unable to access anyone on the 10.10.10.0/24 network. What two problems exist in the network? (Choose two.)
*R2 is using a different version of RIP.
*R2 has a missing network statement.


13. Refer to the exhibit. A network administrator is in the process of sending a preconfigured text file to a router. When the administrator pastes the configuration into the router, an error message appears. What is the problem with the IP addressing scheme?
*The IP address on FastEthernet0/0 overlaps with the IP on Serial0/1.


14. Refer to the exhibit. Host H1 on the LAN is not able to access the FTP server across the Internet. Which two configuration statements are causing this problem? (Choose two.)
*The NAT command on the Fa0/0 interface is applied in the wrong direction.
*The NAT command on the S0/0/0 interface is applied in the wrong direction.


15. Refer to the exhibit. The PC is trying to ping router B at 192.168.2.2, but it fails. What is the problem?
*The default gateway on the PC should be 192.168.1.1.


16. How many usable host addresses does the 192.168.1.0/25 subnet provide?
*126


17. A network technician has isolated a problem at the transport layer of the OSI model. Which question would provide further information about the problem?
*Do you have a firewall that is configured on your PC?

DHomesb Chapter 6 - (Version 4.0)

Posted by BenMuha Go Blog on Label: ,


1   
What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model?
    #physical, data link, network, transport, session, presentation, application
   
2    
What three items are contained in an Ethernet header and trailer? (Choose three.)
    #source MAC address
    #destination MAC address
    #error-checking information


3    
Which protocols are TCP/IP application layer protocols? (Choose two.)
    #FTP
    #SMTP
    
4    
Refer to the graphic. Which protocol is used to access this website?
    #HTTP
    
5    
What is an advantage of the use of layers in the OSI reference model?
    #It prevents changes in one layer from affecting other layers.
    
6    
What term is used to describe how TCP/IP protocols are layered and interact to format, address, and transmit information across a network?
    #protocol stack
    
7    
Whenever e-mail clients send letters, what device is used to translate the domain names into their associated IP addresses?
    #DNS server


8    
An Internet server is running both FTP and HTTP services. How does the server know which of these applications should handle an incoming segment?
    #The segment destination port number identifies the application that should handle it.
    
9    
You are creating a network-based video game. What influences your decision about which transport protocol to use for the application?
    #UDP will not disrupt the game to retransmit dropped packets.
    
10    
Which port number is used by SMTP?
    #25
    
11    
Which application is most likely used to translate www.cisco.com to 198.133.219.25?
    #DNS
    
12    
Which of the following are layers of the TCP/IP model? (Choose three.)
    #Application
    #Internet
    #Network Access
    
13    
Which protocol is used by e-mail servers to communicate with each other?
    #SMTP
    
14    
What client software enables logged in users to communicate with other logged in users in real time?
    #instant messaging


15    
What type of server would use IMAP?
    #e-mail


16    
What resolves a website URL to an IP address?
    #DNS server
    
17    
What information is contained in an IP header?
    #source and destination IP addresses
    
18    
Which protocol is used by FTP to transfer files over the Internet?
    #TCP
    
19    
A client has decoded a frame and started the de-encapsulation process. In which order does the de-encapsulation process occur?  
   # 1) remove Ethernet header and trailer
    2) remove IP header
    3) remove TCP header
    4) pass data to the application
  
20    
A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data?
    #removes the Ethernet header and trailer


21    
Cabling issues are associated with which OSI layer?
    #1
    
22    
A network client in a corporate environment reboots. Which type of server would most likely be used first?
    #DNS

DsmbISP Chapter 2 - (Version 4.1)

Posted by BenMuha Go Blog on Label: ,


1. The DHCP server in a lab environment is down when multiple DHCP clients in the lab are booted for the first time. Which two statements describe how the DHCP clients will be affected by the absence of a DHCP server during boot? (Choose two.)
*All clients with link-local addresses will communicate with each other in a peer-to-peer manner.
*A link-local address will be automatically assigned to the hosts by the operating system.


2. Which is a function of the transport layer of the OSI model?
*delivers data reliably across the network using TCP


3. Which statement describes the process of escalating a help desk trouble ticket?
*After trying unsuccessfully to fix a problem, the help desk technician sends the trouble ticket to the onsite support staff.


4. Which two functions are provided by the upper layers of the OSI model? (Choose two.)
*initiating the network communication process
*encrypting and compressing data for transmission


5. Which scenario represents a problem at Layer 4 of the OSI model?
*A firewall filtering traffic addressed to TCP port 25 on an email server.


6. A customer calls to report a problem accessing an e-commerce web site. The help desk technician begins troubleshooting using a top-down approach. Which question would the technician ask the customer first?
*Can you access other web sites?


7. What are two primary goals of the ISP help desk? (Choose two.)
*network optimization
*customer retention


8. What are two basic procedures of incident management? (Choose two.)
*opening a trouble ticket
*adhering to a problem-solving strategy


9. Which three command line utilities are most commonly used to troubleshoot issues at Layer 3? (Choose three.)
*ping
*ipconfig
*traceroute


10. What is the correct encapsulation order when data is passed from Layer 1 up to Layer 4 of the OSI model?
*bits, frames, packets, segments


11. What are two functions of the physical layer of the OSI model? (Choose two.)
*converting data to bits
*signal generation


12. A customer calls the help desk about setting up a new PC and cable modem and being unable to access the Internet. What three questions would the technician ask if the bottom-up troubleshooting approach is used? (Choose three.)
*Is the NIC link light blinking?
*Is the network cable properly attached to the modem?
*Is the Category 5 cable properly connected to the network slot on the PC?


13. A customer calls the ISP help desk after setting up a new PC with a cable modem but being unable to access the Internet. After the help desk technician has verified Layer 1 and Layer 2, what are three questions the help desk technician should ask the customer? (Choose three.)
*What is your subnet mask?
*What is your IP address?
*Can you ping the default gateway?


14.Which address is used by the router to direct a packet between networks?
*destination IP address


15. What is the first step that is used by a help desk technician in a systematic approach to helping a customer solve a problem?
*define the problem


16. While troubleshooting a connectivity issue on a host, a network administrator issues the ping 127.0.0.1 command. The pings are unsuccessful. What is most likely the problem?
*The TCP/IP stack is not loaded properly.


17. An accounting firm experiencing connectivity issues requires Level 3 support from the ISP. Which function requires Level 3 or higher support?
*the installation and configuration of new equipment


18. What Layer 1 problem can cause a user to lose Internet connectivity?
*loose network cable


19. In what three ways do Level 1 and Level 2 help desk technicians attempt to identify a customer's problems? (Choose three.)
*talking to the customer on the telephone
*using various web tools
*with remote desktop sharing applications 

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