DHomesb Chapter 9 - (Version 4.0)

1 
A technician is unsuccessful in establishing a console session between a PC and a Linksys integrated router. Both devices have power, and a cable is connected between them. Which two troubleshooting steps could help to diagnose this problem? (Choose two.)
#Ensure the correct cable is used.
#Ensure the link status LED on the integrated router is lit.


2 
Identify two physical-layer network problems. (Choose two.)
#hardware failure
#loose cable connections


3 
Only one workstation on a particular network cannot reach the Internet. What is the first troubleshooting step if the divide-and-conquer method is being used?
#Check the workstation TCP/IP configuration.


4 
Which two troubleshooting techniques are suitable for both home networks and large corporate networks? (Choose two.)
#documenting the troubleshooting process
#keeping a record of system upgrades and software versions


5 
What two items could be checked to verify connectivity between the router and the ISP? (Choose two.)
#router status page
#connectivity status as indicated by LEDs


6 
When acting as a DHCP server, what three types of information can an ISR provide to a client? (Choose three.)
#default gateway


#dynamic IP address
#DNS server address


7 
A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?
#substitution


8 
Which troubleshooting method begins by examining cable connections and wiring issues?
#bottom-up


9 
What command is used to determine the location of delay for a packet traversing the Internet?
#tracert


10 
A technician suspects that a Linksys integrated router is the source of a network problem. While troubleshooting, the technician notices a blinking green activity LED on some of the ports. What does this indicate?
#The ports are operational and are receiving traffic.


11 
Which three settings must match on the client and access point for a wireless connection to occur? (Choose three.)
#SSID
#authentication
#encryption key


12 
What should a network administrator do first after receiving a call from a user who cannot access the company web server?
#Ask the user what URL has been typed and what error message displays.


13 


Refer to the graphic. What configuration is incorrect in the network shown?
#The wired connection is the wrong type of cable.


14 
A technician is troubleshooting a security breach on a new wireless access point. Which three configuration settings make it easy for hackers to gain access? (Choose three.)
#broadcasting the SSID
#using open authentication
#using the default internal IP address


15 


Refer to the graphic. What configuration is incorrect in the network shown?
#The host IP address is incorrect.


16 
Typically, help desk personnel assist end users in which two tasks? (Choose two.)
#identifying when the problem occurred
#implementing the solution to the problem


17 
Network baselines should be performed in which two situations? (Choose two.)
#after the network is installed and running optimally
#after major changes are implemented on the network


18 
Which two items should be added to the documentation following a troubleshooting event? (Choose two.)
#final resolution
#results of successful and unsuccessful troubleshooting steps


19 
A PC is plugged into a switch and is unable to connect to the network. The UTP cable is suspected. What could be the problem?
#A crossover cable is being used.


20 
Which ipconfig command requests IP configuration from a DHCP server?
#ipconfig /renew


21 


Refer to the graphic. The wireless host cannot access the Internet, but the wired host can. What is the problem?
#The host WEP key is incorrect.


22 
How does remote-access software help in the troubleshooting process?
#Diagnostics can be run without a technician being present at the site.


23 
What command is used to determine if a DNS server is providing name resolution?
#nslookup

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DsmbISP Chapter 1 - (Version 4.1)

1. When does a host device issue an ICMP echo request?
*to initiate a ping to determine if a destination address is reachable


2. What is the maximum T1 transmission speed?
*1.544 Mbps


3. At which point do individuals and small businesses connect directly to the ISP network to obtain Internet access?
*at a POP


4. Which network support services team is responsible for testing a new customer connection and for monitoring the ongoing operation of the link?
*network operations


5. Which network support services team identifies whether the client site has existing network hardware and circuits installed?
*planning and provisioning


6. What are three main types of high-bandwidth connection options used by medium- to large-sized businesses? (Choose three.)
*metro Ethernet
*T1
*T3


7. What feature enables network devices to be scalable?
*modularity


8. Which statement describes a function of a Tier 1 ISP?
*peers with other similarly sized ISPs to form the global Internet backbone


9. Which two things can be determined by using the ping command? (Choose two.)
*the average time it takes a packet to reach the destination and for the response to return to the source
*whether or not the destination device is reachable through the network


10. The IT manager of a medium-sized business wishes to house the company-owned web servers in a facility that offers round-the-clock controlled access, redundant power, and high-bandwidth Internet access. Which ISP service will fulfill this need?
*equipment collocation


11. What was the original purpose of the Internet?
*research


12. What is the purpose of an RFC?
*to document the development and approval of an Internet standard


13. What units are used to measure Internet bandwidth?
*bits per second


14. What three support service teams are commonly found within an ISP? (Choose three.)
*help desk
*network operations center
*planning and provisioning


15. Which ISP network support systems team will typically contact the customer once a new circuit is ready and guide the customer in setting up passwords and other account information?
*help desk


16. What interconnects the Internet backbone?
*IXPs


17. Refer to the exhibit. A host is having problems maintaining a connection to a server at 192.168.100.2. Which statement best describes the output of the ping command?
*Some packets made it to the destination.


18. Refer to the exhibit. Host A cannot connect to the web server at 192.168.100.2. Based on the output of the tracert command, which device is most likely causing the problem?
*Router F


19. Which network utility helps determine the location of network problems and identifies routers that packets travel across?
*tracert

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DHomesb Chapter 8 - (Version 4.0)

1 
Identify three techniques used in social engineering. (Choose three.)
#vishing
#phishing
#pretexting


2 
A flood of packets with invalid source-IP addresses requests a connection on the network. The server busily tries to respond, resulting in valid requests being ignored. What type of attack occurred?
#SYN flooding


3 
While surfing the Internet, a user notices a box claiming a prize has been won. The user opens the box unaware that a program is being installed. An intruder now accesses the computer and retrieves personal information. What type of attack occurred?
#Trojan horse


4 
What is a major characteristic of a Worm?
#exploits vulnerabilities with the intent of propagating itself across a network


5 
During a pretexting event, how is a target typically contacted?
#by phone


6 
What term is used to describe a dedicated hardware device that provides firewall services?
#appliance-based


7 
Refer to the graphic. In the Linksys Security menu, what does the SPI Firewall Protection option Enabled provide?
#It requires that packets coming into the router be responses to internal host requests.


8 
Many best practices exist for wired and wireless network security. The list below has one item that is not a best practice. Identify the recommendation that is not a best practice for wired and wireless security.
#Disable the wireless network when a vulnerability analysis is being performed.


9 
What environment would be best suited for a two-firewall network design?
#a large corporate environment


10 
Which statement is true about port forwarding within a Linksys integrated router?
#Only external traffic that is destined for specific internal ports is permitted. All other traffic is denied.


11 
Which two statements are true concerning anti-spam software? (Choose two.)
#When anti-spam software is loaded, legitimate e-mail may be classified as spam by mistake.
#Even with anti-spam software installed, users should be careful when opening e-mail attachments.


12 
What type of advertising is typically annoying and associated with a specific website that is being visited?
#popups


13 
To which part of the network does the wireless access point part of a Linksys integrated router connect?
#internal


14 
What statement is true about security configuration on a Linksys integrated router?
#Internet access can be denied for specific days and times.


15 
Which abbreviation refers to an area of the network that is accessible by both internal, or trusted, as well as external, or untrusted, host devices?
#DMZ


16 
Which statement is true regarding anti-virus software?
#Only after a virus is known can an anti-virus update be created for it.


17 
What is one function that is provided by a vulnerability analysis tool?
#It identifies missing security updates on a computer.


18 
What part of the security policy states what applications and usages are permitted or denied?
#acceptable use


19 
What best practice relates to wireless access point security?
#a change of the default IP address


20 
What is a widely distributed approach to marketing on the Internet that advertises to as many individual users as possible via IM or e-mail?
#spam

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DHomesb Chapter 7 - (Version 4.0)

1 
Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks.
#encrypt; authenticate users on

2 
What are three advantages of wireless over wired technology? (Choose three.)
#anytime, anywhere connectivity
#ease of adding additional devices

3 
A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.)
#the size of the building
#the number of solid interior walls in the building
#the presence of microwave ovens in several offices

4 
Which statement is true concerning wireless bridges?
#connects two networks with a wireless link

5 


Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?
#The router supports 802.11b, 802.11g, and 802.11n devices.

6 
Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology?
#has higher power output

7 
Which statement is true concerning an ad-hoc wireless network?
#created by connecting wireless clients in a peer-to-peer network

8 
What is the difference between using open authentication and pre-shared keys?
#Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word.

9 
Which statement is true about open authentication when it is enabled on an access point?
#requires no authentication

10 
Which WLAN component is commonly referred to as an STA?
#wireless client

11 
Which two statements about a service set identifier (SSID) are true? (Choose two.)
#tells a wireless device to which WLAN it belongs
#all wireless devices on the same WLAN must have the same SSID

12 
Why is security so important in wireless networks?
#Wireless networks broadcast data over a medium that allows easy access.

13 
What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker?
#encryption

14 
What type of authentication do most access points use by default?
#Open

15 
What are two authentication methods that an access point could use? (Choose two.)
#EAP
#pre-shared keys

16 
What are two benefits of wireless networking over wired networking? (Choose two.)
#mobility
#reduced installation time

17 


Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients?
#SSID Broadcast

18 
What are the two WEP key lengths? (Choose two.)
#64 bit
#128 bit

19 
Which two statements characterize wireless network security? (Choose two.)
#With SSID broadcast disabled, an attacker must know the SSID to connect.
#Using the default IP address on an access point makes hacking easier.

20 
What does the Wi-Fi logo indicate about a wireless device?
#The device is interoperable with other devices of the same standard that also display the Wi-Fi logo.

21 
What access-point feature allows a network administrator to define what type of data can enter the wireless network?
#traffic filtering

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DsmbISP Chapter 5 - (Version 4.1)

1. What is the correct command sequence to configure a router host name to "LAB_A"?
*Router> enable
Router# configure terminal
Router(config)# hostname LAB_A


2. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)
*VTY interface
*console interface
*privileged EXEC mode


3. A network administrator needs to configure a router. Which of the following connection methods requires network functionality to be accessible?
*Telnet


4. Which tasks can be accomplished by using the command history feature? (Choose two.)
*Set the command history buffer size.
*Recall previously entered commands.


5. A router has a valid operating system and a configuration stored in NVRAM. When the router boots up, which mode will display?
*user EXEC mode


6. Which function is a unique responsibility of the DCE devices shown in the exhibit?
*clocking for the synchronous link


7. In what two ways does SDM differ from the IOS CLI? (Choose two.)
*SDM is used for in-band management only. The IOS CLI can be used for in-band and out-of-band management.
*SDM utilizes GUI buttons and text boxes. The IOS CLI requires the use of text-based commands.


8. What three settings can be made in the SDM Express basic configuration screen? (Choose three.)
*host name
*domain name
*enable secret password


9. Which three encapsulation types can be set on a serial interface by an administrator who is using SDM Express? (Choose three.)
*Frame Relay
*HDLC
*PPP


10. What option within Cisco SDM Express must be configured to allow hosts that receive IP address settings from the router to resolve names on the network or Internet?
*DNS server IP address


11. To save time, IOS commands may be partially entered and then completed by typing which key or key combination?
*Tab


12. How does the SYST LED on the catalyst 2960 switch indicate a POST failure?
*steady amber


13. Refer to the exhibit. From the router console, an administrator is unable to ping a Catalyst switch that is located in another building. What can the administrator do from her location to check the IP configuration of the attached switch?
*Use the show cdp neighbors detail command from the router console.


14. Which three pieces of information about a neighbor device can be obtained by the show cdp neighbors command? (Choose three.)
*platform
*connected interface of neighbor device
*device ID


15. Refer to the exhibit. Which series of commands will correctly configure the serial interface on Router2?
*Router2(config)# interface S0/0/0
Router2(config-if)# ip address 192.168.6.9 255.255.255.252
Router2(config-if)# no shutdown


16. When utilizing SDM Express, which two configuration options allow a router serial interface to obtain an IP address without manually configuring it? (Choose two.)
*IP Negotiated
*IP Unnumbered


17. Refer to the exhibit. A company always uses the last valid IP address in a subnetwork as the IP address of the router LAN interface. A network administrator is using a laptop to configure switch X with a default gateway via the switch console port. The switch VLAN 1 interface is assigned IP address 192.168.5.68/26. What command will the administrator use to assign a default gateway to the switch?
*X(config)# ip default-gateway 192.168.5.126


18. Refer to the exhibit. Users on both SW1 and SW2 report that they are unable to communicate with each other. A network administrator issues show ip interface brief commands on both routers to troubleshoot the connectivity between the two networks. What action will correct the connectivity issue?
*Issue a no shutdown command on the s0/0/0 interface on router RB.


19. Refer to the exhibit. Based on the output of the show port-security interface fastethernet0/1 command on the switch, which statement about the switch port is true?
*There are ten devices with different MAC addresses connected to this port.


20. What step must be completed before port security can be enabled on an interface?
*The interface must be in access mode.


21. Which three sets of commands are required to enable administrators to connect to a switch on the same LAN via Telnet for configuration and management? (Choose three.)
*Switch1(config)# interface vlan 1
Switch1(config-if)# ip address 192.168.2.126 255.255.255.192
Switch1(config-if)# no shutdown.
*Switch1(config)# line vty 0 15
Switch1(config-line)# password cisco
Switch1(config-line)# login.
*Switch1(config)# enable secret class.


22. Which two statements are true regarding the user EXEC mode? (Choose two.)
*This is the default mode on an unconfigured router when first powered up.
*Only some aspects of the router configuration can be viewed.


23. Which of the following identifies the correct items needed to initially configure a router?
*1) DB-9-to-RJ-45 on the PC's serial port
2) a rollover cable
3) the router's console port


24. An administrator enters the show ip route command into a router. What type of information will be displayed?
*the networks learned from other neighbors


25.A network technician is attempting to add an older workstation to a Cisco switched LAN. The technician has manually configured the workstation to full-duplex mode in order to enhance the network performance of the workstation. However, when the device is attached to the network, performance degrades and excess collision are detected. What is the cause of this problem?
*There is a duplex mismatch between the workstation and switch port.

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DsmbISP Chapter 4 - (Version 4.1)

1. In an 8 bit binary number, what is the total number of combinations of the eight bits?
*256


2. Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below.
*11100111


3. How many usable hosts are available given a Class C IP address with the default subnet mask?
*254


4. What is the network broadcast address for a Class C address of 192.168.32.0 with the default subnet mask?
*192.168.32.255


5. Company XYZ uses a network address of 192.168.4.0. It uses the mask of 255.255.255.224 to create subnets. What is the maximum number of usable hosts in each subnet?
*30


6. Which IPv4 class provides the highest number of host addresses per network?
*Class A


7. Which statement accurately describes public IP addresses?
*Public IP addresses must be unique across the entire Internet.


8. Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
*The default gateway is on a different subnet from the host.


9. What are two reasons that NAT was developed? (Choose two.)
*to preserve registered public IP addresses
*to provide a method for privately addressed LANs to participate in the Internet


10. IPv6 increases the IP address size from 32 bits to how many bits?
*128


11. Which two statements describe classful IP addresses? (Choose two.)
*The number of bits used to identify the hosts is fixed by the class of the network.
*All subnets in a network are the same size.


12. Which statement describes NAT overload or PAT?
*Many internal addresses can be translated to a single IP address using different port assignments.


13. What must happen for a privately addressed host on an inside local network to be able to communicate with an outside destination host on the Internet?
*The host IP address must be translated to an inside global address.


14. What is the range of the first octet in a Class B address?
*128 to 191


15. Which option shows the proper notation for an IPv6 address?
*2001:0db8:3c55:0015::abcd:ff13


16. Refer to the exhibit. Which range of IP addresses would allow hosts that are connected to the Router1 Fa0/0 interface to access outside networks?
*192.168.1.66 through 192.168.1.94


17. Static NAT works by mapping a specific inside local IP address to what other specific address type?
*private IP address


18. Which port numbers are used by PAT to create unique global addresses?
*1024 and above


19. Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 inside network. HostA has sent a request to the web server. What is the destination IP address of the return packet from the web server?
*172.30.20.10

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DsmbISP Chapter 3 - (Version 4.1)

1. A network technician is assigned to perform a site visit to a customer location to determine the requirements for a network upgrade. In addition to the currently installed equipment inventory, what other information about the hosts and networking devices should the technician obtain from the customer?

*any planned growth anticipated in the near future

2. Which three issues should be noted on the technician's site survey report? (Choose three.)

*unlabeled cables

*poor physical security of network devices

*lack of UPS for critical devices

3. What three things are included in a logical topology document? (Choose three.)

*the path that the data takes through a network

*the device names and Layer 3 addressing information

*the location of routing, network address translation, and firewall filtering

4. When designing a network upgrade, which two tasks should the onsite technician perform? (Choose two.)

*investigate and document the physical layout of the premises

*perform a site survey to document the existing network structure

5. What must be added when a network expands beyond the coverage area of the current telecommunications room?

*IDF

6. Which three items are typically found in an MDF? (Choose three.)

user workstations

*switches and routers

*the point of presence

7. Which device has the ability to break up broadcast and collision domains?

*router

8. Refer to the exhibit. Which type of twisted pair cable is used between each device?

*A=console, B=straight, C=straight, D=crossover, E=crossover

9. Why is it important to review the results of an on-site survey report with the customer before beginning the network design?

*to verify that the report accurately describes the current network and any plans for expansion

10. Which two benefits can be gained by locating network equipment in a telecommunications closet, rather than in a user area? (Choose two.)

*improved physical security

*centralized cable management

11. What does the use of redundant network components supply to a network?

*reliability

12. Which type of cable has a solid copper core with several protective layers including PVC, braided wire shielding, and a plastic covering?

*coaxial

13. What is the term for the location at the customer premise where the customer network physically connects to the Internet through a telecommunications service provider?

*point of presence

14. In what two ways will entering into a managed service agreement with an ISP for a network upgrade affect the costs that are incurred by the customer? (Choose two.)

*Network upgrade and maintenance costs will become predictable.

*The company will not need to spend a large amount of money to purchase the equipment upfront.

15. What is the benefit for a company to use an ISR router?

*An ISR provides the functionality of a switch, router, and firewall in one device.

16. It is said that the goal for availability of a communications system is "five-9s". What is meant by this?

*A network needs to be available 99.999% of the time.

17. A client requires a networking device that is capable of expansion to accomodate growing network demands. What characteristic must this device have to meet this requirement?

*modular physical configuration

18. Refer to the exhibit. To allow IP communication between the two networks, what type of device is required?

*router

19. What are two advantages of having ISP-managed services? (Choose two.)

*predictable billing

*increase availability of help desk services

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DsmbISP Chapter 9 - (Version 4.1)

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?

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DsmbISP Chapter 8 - (Version 4.1)

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.

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DsmbISP Chapter 7 - (Version 4.1)

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.

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