CIS 170 Exam #1

What name is used to refer to the piece of equipment that connects a router (serial interface) to a leased line provider?
Click the card to flip 👆
1 / 149
Terms in this set (149)
What name is used to refer to the piece of equipment that connects a router (serial interface) to a leased line provider?
CSU/DSU
The CSU/DSU converts the Layer ________ standards between the telco and the serial interface.
1
Which router interface type can be configured with an encapsulation of HDLC or PPP?
Serial
Which Cisco IOS command can be used to display a list of basic IP information with a single line per interface, including IP address and interface status?
show ip interface brief
Which interface status code type is generally used to display the Layer 2 status of an interface?
protocol status
If an interface shows a status of Up/Down, what is the most likely cause of the problem to be investigated?
layer 2 config
What Cisco IOS command is used to enable the use of IPv4 routing on a Cisco device?
ip routing
What Cisco IOS command is used to display the status information of the interfaces on a Cisco device, including IP address and mask information, in the briefest format possible?
show protocols
When connecting two routers via a serial interface, which Cisco IOS command is required to set the line rate of the interface, and on which side of the connection would it be configured?
clock rate, DCE
Which Cisco IOS command is used to display the type of serial cable connected to an interface?
show controllers
What is the name used to identify a virtual NIC type of device that exists on Cisco switches to assign IP information to specific VLANs?SVIHow many VLAN interfaces (SVI) can exist and be up on a typical Layer 2 Cisco switch at the same time?1Which Cisco IOS command is used to display local interface (not server) DHCP IPv4 assignment information?show dhcp leaseWhich of the following commands is used to enable console password security using a simple password?loginWhich of the following commands is used to initiate the configuration mode to set a password for Telnet?line vty 0 15Which of the following is a characteristic of the shared passwords used in networking?The password is set and known by administrators.Which of the following commands should be used to force the use of username/password combinations stored on the local switch for both the console and Telnet? (Select all that apply.)login local, no passwordWhich of the following transport input commands will configure a port to support both Telnet and SSH? (Select all that apply.)transport input all, transport input telnet sshWhich of the following commands should be done as a precursor to generating a matched public and private key for encryption?hostname name, ip domain-name name,Which of the following protocols are enabled by default on a Cisco router for external users to access?Neither Telnet nor SSHWhat is the difference between EtherChannel auto and desirable modes?Desirable will always initiate autonegotiation, whereas auto will not.Which Cisco STP mode extends on the IEEE 802.1w standard by providing an STP instance per VLAN?RPVST+Which STP mode is the default on most modern Cisco Catalyst switches?PVST+What is the only way an engineer can alter the value of the bridge ID?Configure the STP priorityWhen configuring a switch with system ID extension enabled, what STP priority multiple must be used?4096What are the two different EtherChannel protocols supported by most modern Cisco switches?PAgP, LACPWhich EtherChannel mode should be used if the intention is to have the targeted interfaces initiate a connection via LACP?Active modeRather than adopting Cisco's proprietary STP method, the IEEE created their own method which was defined in 802.1Q amendment 802.1s. What is the name of this STP method?MSTPWhich command on a Cisco Catalyst switch tells the switch which type of STP to use?Spanning-tree modeWhich of the following sends one set of BPDUs in the network, regardless of the number of VLANs?RSTPGiven the IP address 200.1.1.130 and the mask 255.255.255.224, what is the subnet number?200.1.1.128What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?30You need to configure a server that is on the subnet 192.168.19.24/29. The router has the first available host address. Which of the following should you assign to the server if it is to be issued the next available address?192.168.19.26 / 255.255.255.248What is the broadcast address of 192.168.192.10/29?192.168.192.15What is the subnet number of a host with an IP address of 172.16.66.0/21?172.16.64.0To test the IP stack on your local host, which IP address would you ping?127.0.0.1What are the subnet network and the broadcast network for the IP address 172.16.204.76/27? (Choose two.)172.16.204.95, 172.16.204.64What are the subnet network and the broadcast network for the IP address 10.184.237.207/19? (Choose two.)10.184.224.0, 10.184.255.255What are the subnet network and the broadcast network for the IP address 10.12.98.45/14? (Choose two.)10.12.0.0, 10.15.255.255What are the subnet network and the broadcast network for the IP address 192.168.47.246/27? (Choose two.)192.168.47.224, 192.168.47.255What are the subnet network and the broadcast network for the IP address 10.85.26.184/28? (Choose two.)10.85.26.176, 10.85.26.191Which command disallows the use of trunking mode on a port?switchport mode accessWhat is the name of the process that is defined by IEEE 802.1Q to relay traffic from multiple VLANs?VLAN taggingWhat is the name/standard of the two VLAN trunking protocols that have been traditionally supported on Cisco switches?ISL, IEEE 802.1QThe IEEE 802.1Q standard adds a(n) ________-byte tag to the original frame to identify the VLAN.4How many bits within the IEEE 802.1Q tag are used to identify the VLAN of the frame?12With IEEE 802.1Q, what term is used to refer to the traffic that exists on a VLAN trunk that is purposefully not tagged?Native VLANWhat Cisco IOS command is used to assign a specific access VLAN onto a switchport?switchport access vlan vlanWhat is the name of the Cisco proprietary tool used to advertise VLANs between switches so that all switches are automatically configured with the same VLAN numbers?VTPWhat Cisco IOS command is used to display the current status of the Cisco VLAN Trunking Protocol?show vtp statusWhen configuring a trunk between two switches, which dynamic trunking mode should be used to always initiate a trunking connection?Dynamic desirableWhen configuring a trunk between two switches, which dynamic trunking mode should be used to always trunk, as long as the trunking connection is initiated from the remote switch?dynamic autoWhich of the following protocols are used to establish a point-to-point serial link? (Select all that apply.)HDLC, PPPWhat is the physical rate of transmission of a T1 leased line?1.544 MbpsWhich technology is commonly implemented inside a service provider's (SP) network and provides an Ethernet point-to-point connection between customer devices?EoMPLSWhat protocol standard is used when utilizing an Ethernet emulation point-to-point link?IEEE 802.3The Internet is essentially one big ________ network.TCP/IPWhich HDLC field is equivalent to the preamble in Ethernet?FlagWhich of the following fields in HDLC does not exist in Ethernet and is typically considered outmoded for modern links between routers?ControlWhen a collision occurs on a shared Ethernet network, what is the first step in recovery for the two computers in question?Send a jamming signalWhat is the name of a LAN device that provides many physical ports into which Ethernet cables can be connected?Ethernet switchWhich IEEE standard defines the use of radio waves to communicate between wireless LAN nodes?IEEE 802.11What is the longest copper cable length supported by the IEEE 802.3u FastEthernet standard?100 metersWhat is the longest copper cable length supported by the IEEE 802.3an 10 Gigabit Ethernet standard?100 metersWhat is the name of the data unit that is sent and received at the Ethernet data link layer?FrameWhat term is used to describe a set of rules that are followed to ensure that devices can talk to each other and understand what each device is saying?Encoding schemeWhy are the individual wires within a UTP cable twisted together?To reduce crosstalkOn a LAN RJ-45 connector, what name is given to the eight physical connections that make contact when connected?PinsWhat is the name of the device in a PC (or server) that connects it to a LAN network?NICWhich of the following lists the prefix (CIDR) format equivalent of 255.255.224.0?/19Which of the following lists the prefix (CIDR) format equivalent of 255.254.0.0?/15Which of the following lists the prefix (CIDR) format equivalent of 255.255.240.0?/20Which of the following is the dotted-decimal notation (DDN) equivalent of /11?255.224.0.0Which of the following is the dotted-decimal notation (DDN) equivalent of /18?255.255.192.0Which of the following is the dotted-decimal notation (DDN) equivalent of /27?255.255.255.224You have a 255.255.255.240 mask. Which of the following is the valid CIDR notation?/28You have a 255.255.252.0 mask. Which of the following is the valid CIDR notation?/22You have a 255.192.0.0 mask. Which of the following is the valid CIDR notation?/10You are given the following information about the IP address of a host connected to the network, 200.10.5.68/28. Determine the number of network (N), subnet (S), and host (H) bits. Which of the following statements are TRUE?H=4You are given the following information about the IP address of a host connected to the network, 172.16.45.1/30. Determine the number of network (N), subnet (S), and host (H) bits. Which of the following statements are TRUE?S=14What is one way in which STP protects a redundant Ethernet network?Protects against frames looping the Layer 2 domainsHow is a root bridge/switch determined?All the switches send out hello BPDUs, and the switch with the lowest bridge ID becomes the root.Which are TRUE statements about STP PortFast mode?The port bypasses the normal STP startup process and enters forwarding mode immediately.In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs?BlockingSwitch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ________, except the switchport in which the frame arrived.VLANThe only switch on a LAN that has all designated interfaces is the ________ switch.RootThe switch that has the lowest STP cost will become the ________ switch for a specific segment.DesignatedWhat is the name of the field in the STP hello BPDU that contains the bridge ID of the switch that the sender of the BPDU believes is the root switch?Root bridge IDThe STP root switch is the switch with the lowest numeric value for the ________.Bridge IDRefer to the figure. Based on the STP port costs shown, which of S4's interfaces will become the root port?3Your boss has asked you to tell him how many usable subnets and hosts a Class C network with the IP address and mask of 192.168.10.0/28 can have. How should you respond?16 subnets and 14 hostsWhat valid host range is the IP address 172.16.10.22 255.255.255.240 a part of?172.16.10.17 through 172.16.10.30If you wanted to have 12 subnets with a Class C network ID, which subnet mask would you use?255.255.255.240If you are using a Class C network ID with 2 subnets and need 31 hosts per network, which of the following masks should you use?255.255.255.192How many subnets and hosts are provided by the network 192.168.254.0/26?4 networks with 62 hostsWhich of the following are private IP networks? (Select all that apply.)172.27.0.0, 192.168.25.0Which of the following are public IP network IDs? (Select all that apply.)8.0.0.0, 172.32.0.0You have the network 192.168.10.0/24. How many subnets and hosts are available?1 subnet with 254 hostsYou have an interface on a router with the IP address 192.168.192.10/29. How many total host addresses can exist on the subnet of the LAN attached to this router's interface?6You have an interface on a router with the IP address 192.168.192.10/29. What is the broadcast address the hosts will use on this LAN?192.168.192.15You have a Class B network and need 29 subnets. What is your mask?/21You are trying to connect to your switch via the console port and are having trouble connecting to the switch. You check the setting for your terminal emulation program and find the following:(there was an image)Baud Rate: 9600Which of the following commands would you issue to move from the User EXEC mode to the Privileged EXEC mode?enableYou are having trouble remembering part of the correct format of a command. Which of the commands would give you help on the correct format of the parameters?command ?A Cisco switch has four memory areas that store various files and the IOS. In which area is the IOS stored?FLASHA Cisco switch has four area modules that store various files and the IOS. In which area module is the startup-configuration file stored?NVRAMYou have just completed the setup of your new Cisco 2960 switch, and you need to save your work. To save the configuration file, you would issue which of the following commands?copy running-config startup-configYou want to erase your startup configuration file. This can be accomplished by issuing which of the following commands? (Select all that apply.)erase nvramCisco uses the term ________ to refer to a reinitialization of the software.ReloadThe ________ stores the configuration used anytime the switch reloads Cisco IOS.Startup-configThe ________ changes dynamically when someone enters commands in configuration mode.running-configWhich layer of the TCP/IP model defines the rules for data packet recovery?transportThe process of forwarding an IP packet from host to host is known as ________.RoutingWhat name is given to the process of enclosing data with headers and trailers as the data is moved down the TCP/IP model?encapsulationWhich layer of the OSI model defines how to start, control, and end conversations by grouping messages in a workflow?session layerWhich layer of the OSI model defines functions related to data delivery, error recovery, and flow control?Transport layerWhich layer of the OSI model provides an interface between the network and the software running on a host machine?application layerIn IT, what term refers to a small network that is used for business purposes, typically in the home of a business or employee?SOHO networkAt which of the OSI model layers are rules defined that determine how a device can send data over a particular medium?data linkWhich of the OSI model layers has the main purpose of defining and negotiating data formatting?presentationIf a Cisco Gigabit Ethernet port is connected to a device that does not support IEEE autonegotiation, and the interface speed cannot be sensed, what speed is the interface defaulted into?10 MbpsRefer to the figure. From the output shown from the show interface status command, what can be determined about how speed and duplex were assigned to interface F0/1? (Select all that apply.)(there was an image)Duplex was not autonegotiated, Speed was autonegotiated.When using the no speed command on an interface, what is the resulting change made?The speed setting defaults to its automatic configurationWhat does it mean when an interface does not display configuration settings when using the show running-config and show startup-config commands?It means the configuration is running with default settings.Which of the following is the most essential fact that allows the IEEE autonegotiation protocol to function?Wiring pinouts are common for 10BASE-T, 100BASE-T, and 1000BASE-T.Which of the following will disable autonegotiation for an interface on a Cisco switch?Setting both the speed and duplex settings for the interfaceWhich of the following will occur if the speed setting cannot be sensed in a Cisco switch?The speed will default to the lowest setting available.As the network engineer, you are given the following IP address information: 172.16.8.159 / 255.255.255.192. Identify the broadcast address.172.16.8.191As the network engineer, you're shown the following IP address information: 192.168.10.33 / 255.255.255.248. Identify the broadcast address.192.168.10.39Which of the following is the resident subnet for the IP address 192.168.10.33/29?192.168.10.32Which of the following is the resident subnet for the IP address 187.225.25.48/20?187.225.16.0Which of the following is the broadcast address for the subnet in which IP address 200.10.5.68/28 resides?200.10.5.79You are given the IP address 200.1.1.130 and the mask 255.255.255.224. Identify the subnet number.200.1.1.128You have an interface on a router with the IP address 192.168.192.113/29. What is the broadcast address the hosts will use on this LAN?192.168.192.119If the host on a network has the address 172.16.45.25/30, what is the subnet ID to which this host belongs?172.16.45.24If the host on a network has the address 172.16.66.50/21, what is the subnet ID to which this host belongs?172.16.64.0As the network engineer, you are presented with the following 172.16.0.0/18 IP addressing information. Identify all the possible subnet IDs from the list below, assuming that the /18 subnet is used throughout the network.172.16.192.0, 172.16.64.0As the network engineer, you are given the following subnet IDs: 172.32.64.0, 172.32.168.0, and 172.32.192.0. Which of the following masks could be applied to this network?225.255.248.0The process of sending frames out all other interfaces, except the interface on which the frame arrived, is called ________.floodingThe IEEE defines three general categories of Ethernet MAC addresses. What are these three types?MulticastWhen connecting multiple switches with redundant links, which of the following protocols helps to ensure that you will have a loop-free Ethernet network?STPWhen STP has placed a port in the blocked state, this port ________.Cannot receive or forward data framesWhich of the following is an action that can be taken by a switch upon receiving a frame? (Select all that apply.)It may forward the frame out of a selected port, It may filter the frame and not send it out of a port.Given the following address table, which port would be used to forward a frame destined for 0200.2222.2222?(there was an image)Fa0/2Given the following address table, which port will not retransmit a frame received from 0200.3333.3333?(There was an image)fa0/3Which of the following items does a switch populate into its address table upon receiving a frame from an unknown source? (Select all that apply.)The source MAC address, The receiving interfaceWhich of the following prevents loops from a switch? (Select all that apply.)STP, Disabling send/receive on some portsOther than user-issued commands, what will cause a switch to remove an entry in an address table? (Select all that apply.)The age of the entry, The address table becoming fullWhich of the following commands will provide statistics about incoming and outgoing frames on an interface such as the number of unicast, multicast, and broadcast frames in and out of the interface?show interface name counters