Chptr 4-9

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In an 8 bit binary number, what is the total number of combinations of the eight bits? 256 Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below. 11100111 How many usable hosts are available given a Class C IP address with the default subnet mask? 254 What is the network broadcast address for a Class C address of 192.168.32.0 with the default subnet mas 192.168.32.255 Company XYZ uses a network address of 192.168.4.0. It uses the mask of 255.255.255.224 to create sub 30 Which IPv4 class provides the highest number of host addresses per network? Class A Which IPv4 class of addresses provides the most networks? Class C Which statement accurately describes public IP addresses? Public IP addresses must be unique across the entire Internet. Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Inter The default gateway is on a different subnet from the host.

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 IPv6 increases the IP address size from 32 bits to how many bits? 128 What is the range of the first octet in a Class B address? 128 to 191 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. Which statement describes NAT overload or PAT? Many internal addresses can be translated to a single IP address using different port assignments. What must happen for a privately addressed host on an inside local network to be able to communicate wi The host IP address must be translated to an inside global address. Which option shows the proper notation for an IPv6 address? 2001:0db8:3c55:0015::abcd:ff13 Refer to the exhibit. Which range of IP addresses would allow hosts that are connected to the Router1 Fa0 192.168.1.66 through 192.168.1.94 Static NAT works by mapping a specific inside local IP address to what other specific address type? inside global Which port numbers are used by PAT to create unique global addresses? 1024 and above Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 inside network. HostA has sent a request to 172.30.20.10

m number of usable hosts in each subnet?

he host is shown in the exhibit. What could be the cause of the problem?

ost on the Internet?

side networks?

e destination IP address of the return packet from the web server?

W hic h thr ee 1 What pie is the correct command sequence to configure a router host name to "LAB_A"? Router> enable ce s Router# configure terminal of Router(config)# hostname LAB_A 2 inf 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.) or VTY interface ma console interface tio privileged EXEC mode n 3 Ho A network administrator needs to configure a router. Which of the following connection methods requires network functionality to be accessible? ab w Telnet out 4 do Which tasks can be accomplished by using the command history feature? (Choose two.) a es nei Set the the command history buffer size. gh Recall previously entered commands. SY 5 bo A router has a valid operating system and a configuration stored in NVRAM. When the router boots up, which mode will display? ST ruser EXEC mode LE 6 de Which function is a unique responsibility of the DCE devices shown in the exhibit? D vic on clocking for the synchronous link e 7 the In what two ways does SDM differ from the IOS CLI? (Choose two.) ca cat SDM is used for in-band management only. The IOS CLI can be used for in-band and out-of-band management. n aly SDM utilizes GUI buttons and text boxes. The IOS CLI requires the use of text-based commands. be 8 st What three settings can be made in the SDM Express basic configuration screen? (Choose three.) obt 29 ain host name 60 ed domain name swi by enable secret password tch 9 the Which three encapsulation types can be set on a serial interface by an administrator who is using SDM Express? (Choose three.) ind sh Frame Relay ica ow te HDLC cd a PPP p 10 P 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? ne O DNS server IP address ig 11 ST To save time, IOS commands may be partially entered and then completed by typing which key or key combination? hb fail or tab ur s 12 e? co steady amber m 13 Refer ma 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 Use nd the show cdp neighbors detail command from the router console. 14 Refer to the exhibit. Which series of commands will correctly configure the serial interface on Router2? ? (C Router2(config)# interface S0/0/0 ho Router2(config-if)# ip address 192.168.6.9 255.255.255.252 os Router2(config-if)# no shutdown e thr 15 ee platform connected interface of neighbor device device ID 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(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 rout 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 Switch1(config)# exit 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? ) 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 netw There is a duplex mismatch between the workstation and switch port. 26 Which two statements are true about the NVRAM on a Cisco device?(Choose two.) retains contents when power is removed stores the startup configuration file

strator do from her location to check the IP configuration of the attached switch?

ator 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

nterface brief commands on both routers to troubleshoot the connectivity between the two networks. What action will correct the connectivity issue?

nt? (Choose three.)

uplex 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

mand will the administrator use to assign a default gateway to the switch?

are detected. What is the cause of this problem?

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 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? immideately 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. Exterior routing protocols are used to communicate between multiple autonomous systems. 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 21 A network is converged and the routing tables are complete. When a packet needs to be forwarded, what is the first criterion used to determine the best path in the routing table? the route with the longest address and mask match to the destination

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A client is communicating with a server on a different segment of the network. How does the server determ identifies the appropriate service from the destination port field 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. What are three unique characteristics of UDP? (Choose three.) low overhead no flow control no error-recovery function Within TCP, what combination makes up a socket pair? source IP address and port with a destination IP address and port What type of update allows client computers to register and update their resource records with a DNS serv dynamic Which DNS zone resolves an IP address to a qualified domain name? reverse lookup 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 Which protocol is used to send e-mail, either from a client to a server or from a server to another server? SMTP A manufacturing company subscribes to certain hosted services from their ISP. The services required inclu FTP HTTP SMTP To meet customer expectations, an ISP must guarantee a level of service that is based on what two factor availability reliability 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. What type of DNS server is typically maintained by an ISP? caching-only Which two options correctly match protocol and well-known port number? (Choose two.) HTTP - 80 SMTP - 25 What are three characteristics of HTTPS? (Choose three.) It supports authentication. It encrypts packets with SSL. It requires additional server processing time. User1 is sending an e-mail to [email protected]. What are two characteristics of the process of sending th

It utilizes a store and forward process. SMTP is used to send the e-mail message to the mail servers. Which three fields do a TCP header and a UDP header have in common? (Choose three.) source port checksum destination port When a host is communicating with multiple applications on the same server at the same time, which two v IP address MAC address 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. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN Host2 sends a SYN-ACK message to Host1. Refer to the exhibit. The PC is requesting HTTP data from the server. What is a valid representation of sou Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:80 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 addre Which two statements describe the FTP protocol? (Choose two.) The FTP client initiates the transfer of data when using a passive data connection. It requires two connections between client and server.

uested by the client?

e transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)

n all packets for each session? (Choose two.)

stablishment. What happens next?

or this request?

ose three.)

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Which benefit does SSH offer over Telnet when remotely managing a router? encryption Which means of communication does an SNMP network agent use to provide a network management stat trap What is the term used to describe the area of a network which stores servers that are accessible to any us DMZ Before a technician upgrades a server, it is necessary to back up all data. Which type of backup is necessa full A company wants to configure a firewall to monitor all channels of communication and allow only traffic tha stateful packet inspection Which three protocols describe methods that can be used to secure user data for transmission across the IPSEC SSL HTTPS What network layer security protocol can secure any application layer protocol used for communication? PSEC Which three items are normally included when a log message is generated by a syslog client and forwarde date and time of message ID of sending device message ID What AAA component assigns varying levels of rights to users of network resources? authorization A network administrator is assigning network permissions to new groups of users and employing the princi 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. A hacker has gained access to sensitive network files. In analyzing the attack, it is found that the hacker ga The hacker obtained the MAC address of a permitted host, and cloned it on his wireless laptop NIC. 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. When is the use of out-of-band network management necessary? when the management interface of a device is not reachable across the network What 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. Refer to the exhibit. While the user on router A is connected to router B through telnet, the CTRL-SHIFT-6 It suspends the connection to router B. What two measures help to verify that server backups have been successfully completed? (Choose two.) reviewing backup logs performing a trial restore Which three applications can be used for in-band management? (Choose three.) HTTP SNMP Telnet Which two characteristics of network traffic are being monitored if a network technician configures the com ports protocols

Which AAA service provides detailed reporting and monitoring of network user behavior, and also keeps a accounting While downloading an IOS image from a TFTP server, an administrator sees long strings of exclamation m The transfer is working. What does the command copy flash tftp accomplish? It copies the IOS in flash to a TFTP server.

licited information?

backed up?

tion. Which firewall configuration should be deployed?

ose three.)

h two actions should the administrator take? (Choose two.)

s segment of the network. It is further discovered that the only security measure in place on the wireless network is M

at effect does this have?

a packet filter? (Choose two.)

nection and device configuration change across the network?

le. What does this mean?

ace on the wireless network is MAC Address Filtering. How is it likely that the hacker gained access to the network?

gained access to the network?

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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. A network administrator is upgrading a Cisco 1841 router by adding a WIC-2T module card. Which show c show version Which two conditions identify issues that are confined to Layer 1? (Choose two.) cables that exceed maximum length poor termination of cables Refer to the exhibit. Which three statements are true about the output of the show ip interface brief comm FastEthernet0/0 is functioning correctly. The shutdown command has been applied on Serial0/0. FastEthernet0/1 is experiencing a Layer 2 network problem. A network administrator plugs a new PC into a switch port. The LED for that port changes to solid green. W The port is operational and ready to transmit packets. A user is having trouble accessing the Internet. A network administrator begins by verifying that the IP add divide-and-conquer A user can access any web page on the Internet but cannot access e-mail. What troubleshooting method w top-down Which problem is associated with Layer 4 of the OSI model? A firewall is blocking Telnet packets to a host. An administrator is creating a lab to simulate a WAN connection. During the setup, the administrator notice Layer 2 A PC is able to reach devices that are located both inside and outside the network. However, when trying t protocol analyzer Refer to the exhibit. Which IP address is misconfigured and is causing connectivity problems between hos Server2 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 R2 is using a different version of RIP. R2 has a missing network statement. Refer to the exhibit. A network administrator is in the process of sending a preconfigured text file to a route The IP address on FastEthernet0/0 overlaps with the IP on Serial0/1. Refer to the exhibit. Host H1 on the LAN is not able to access the FTP server across the Internet. Which tw 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. 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. How many usable host addresses does the 192.168.1.0/25 subnet provide? 126 A network technician has isolated a problem at the transport layer of the OSI model. Which question would Do you have a firewall that is configured on your PC? Refer to the exhibit. A router initially boots up to ROMMON mode. The administrator enters the dir flash: c Boot the router using the reset command in ROMMON. Refer to the exhibit. Which statement is true regarding the IP address configuration? Interface Fa0/0 and NetworkB can be in the same subnet. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route ping

traceroute show ip route

verify that the module is correctly recognized by the router?

ent status of the port?

Next the administrator pings the default gateway. Based on this information, what type of troubleshooting method is t

ting this issue?

n types on each end of the serial connection. At what layer of the OSI model is this problem occurring?

on the same subnet, the PC fails to make a connection. The administrator has several other PCs that are located in t

the network? (Choose two.)

onfiguration into the router, an error message appears. What is the problem with the IP addressing scheme?

g this problem? (Choose two.)

hown. What should the administrator do next?

ee commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)

e of troubleshooting method is the administrator employing?

oblem occurring?

l other PCs that are located in the same subnet try a connection to the FTP server and they are successful. Which tr

IP addressing scheme?

d they are successful. Which troubleshooting tool can be used to determine the problem between the PC and the FT

em between the PC and the FTP server?