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97 Cards in this Set
- Front
- Back
Routers limit network traffic by controlling what?
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Broadcast domains
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Which layer of the OSI model is responsible for converting frames into bits and bits into frames?
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Layer 2 - The data link layer
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What scheme suppresses a route announcement out an interface from which the route was learned?
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Split Horizon
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What four internal routing protocols support VLSM?
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EIGRP, IS-IS, RIPv2 and OSPF
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When you have configured your router for EIGRP routing, what command is used to configure the gateway of last resort?
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ip default-network
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What layer of the hierarchical design model implements access lists, distribution lists, route summarization, VLAN routing, security policy and address aggregation?
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Distribution layer
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Which class of routing protocol periodically sends its routing table to its neighbors: link-state or distance vector?
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distance vector
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The switch functions of blocking and forwarding that are based on MAC addresses operate at which layer of the OSI model?
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Layer 2 - The data link layer
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What is the best measurement of reliability and load on an interface?
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Rely 255/255, Load 1/255
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What OSI layer deals with frames?
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Layer 2 - data link layer
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What type of routing protocol do you use between autonomous systems?
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external gateway protocol (EGP)
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Which layer of the OSI model is concerned with data representation, data compression schemes, encryption and voice coding?
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The presentation layer, Layer 6
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What routing metric is concerned with the time a packet takes to travel from one end to another on the network?
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the delay metric
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What device controls collision domains but does not control broadcast domains?
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bridge
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Which routing protocol requires a two layer topology with all areas connecting to the backbone?
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OSPF
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Which layer of the OSI model does TCP operate in?
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Layer 4 - the transport layer
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Which OSI layer operates with packets?
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Layer 3 - the network layer
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What is the cost metric for 10 Mbps ethernet?
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cost = 10
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In which type of routing protocol does each router advertise its status to all routers in the network, and each router calculates the best routes for the network?
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link state routing protocol
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What command can be used to configure a default route out interface serial 0?
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ip route 0.0.0.0 0.0.0.0 serial 0
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A routing protocol that sens out routes with an unreachable metric is using what?
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poison reverse
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Which hierarchical design model layer has high speed backbone ATM switches with redundant connections?
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Core layer
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What does OSI stand for?
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Open Systems Interconnection
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Who developed the OSI model?
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The International Standards Organization (ISO)
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Which OSI layer describes electrical and mechanical characteristics of network connections?
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Layer 1 - Physical Layer
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Which OSI layer is responsible for the reliable transport of data across a physical link?
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Layer 2 - Data Link Layer
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Which OSI layer is concerned with sequencing of frames, flow control, synchronization, error notification, physical network topology, and physical addressing?
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Layer 2 - Data Link Layer
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The IEEE subdivides the data-link layer into what two
sublayers for local-area networks? |
The upper layeris the Logical Link Control (LLC) sublayer, which manages the communications between
devices. The lower layer is the Media Access Control (MAC) sublayer, which manages protocol access to the physical media. |
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On what OSI layer do these technologies run:
• Frame Relay • Asynchronous Transport Mode (ATM) • Synchronous Data Link Control (SDLC) • High-level data-link control (HDLC) • IEEE 802.3z and IEEE 802.3ab (Gigabit Ethernet) • IEEE 802.3u (Fast Ethernet) • Ethernet version 2 • Integrated Services Digital Network (ISDN) • Point-to-Point Protocol (PPP) • Token Ring • Spanning-Tree Protocol (STP) |
Layer 2 - Data Link Layer
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Which OSI layer is concerned with the routing of information and methods to determine paths to a destination?
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Layer 3 - Network layer
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Which OSI layer provides end-to-end error checking and recovery, multiplexing, virtual circuit management,
and flow control? Messages are assigned a sequence number at the transmission end. |
Layer 4 - Transport layer
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Which OSI layer contains the following technologies:
• Transmission Control Protocol (TCP) • Real-Time Transport Protocol (RTP) • Sequenced Packet Exchange (SPX) • AppleTalk’s Transaction Protocol (ATP) • User Datagram Protocol (UDP) |
Layer 4 - Transport layer
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Which OSI layer provides a control structure for communication between applications?
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Layer 5 - Session layer
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Which OSI layer contains the following technologies:
• NetBIOS • Real-Time Control Protocol (RTCP) • Session Control Protocol (SCP) • AppleTalk’s Zone Information Protocol (ZIP) • DECnet’s Session Control Protocol (SCP) • H.323, H.245, H.225 • Real-Time Control Protocol (RTCP) |
Layer 5 - Session layer
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Which OSI layer ensurea that data sent from a sending application on one system is
readable by the application layer on another system, and provides the conversion of character representation formats, data compression schemes, and encryption schemes? |
Layer 6 - Presentation
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Which OSI layer contains the following technologies:
• Abstract Syntax Notation 1 (ASN.1) • ASCII • EBCDIC • Motion Picture Experts Group (MPEG) • Graphics Interchange Format (GIF) • Joint Photographic Experts Group (JPEG) • Tagged Image File Format (TIFF) • G.711, G.729a, G.726, G.728 |
Layer 6 - Presentation
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Which OSI layer interacts with software applications by identifying communication resources, determining
network availability, and distributing information services? |
Layer 7 - Application
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Which OSI layer contains the following technologies:
• Telnet • File Transfer Protocol (FTP) • Simple Mail Transfer Protocol (SMTP) • Simple Network Management Protocol (SNMP) • Network File System (NFS) • Association Control Service Element (ACSE) • Remote Operations Service Element (ROSE) |
Layer 7 - Application
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What is the Hexidecimal digit for the Decimal value 10?
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0xA
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What is the Hexidecimal digit for the Decimal value 11?
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0xB
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What is the Hexidecimal digit for the Decimal value 12?
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0xC
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What is the Hexidecimal digit for the Decimal value 13?
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0xD
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What is the Hexidecimal digit for the Decimal value 14?
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0xE
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What is the Hexidecimal digit for the Decimal value 15?
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0xF
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What is the Hexidecimal digit for the Decimal value 16?
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0x10
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What are the three layers in the hierarchical model for network design?
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Access, distribution and core
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In the hierarchical model for network design, which layer has optimal transport, low latency, high availability, and redundancy?
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Core
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In the hierarchical model for network design, which layer contains no compression, access lists, or encryption?
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Core
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In the hierarchical model for network design, which layer provides route policies and filtering?
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Distribution
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In the hierarchical model for network design, which layer contains the following: access lists, distribution lists, route summarization, VLAN routing, security policy, address aggregation, address filters, encryption, compression, and quality of
service (QoS)? |
Distribution
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In the hierarchical model for network design, which layer uses use workgroup hubs and remote access concentrators?
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Access
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In the hierarchical model for network design, which layer includes shared and
switched bandwidth, MAC filtering, and segmentation? |
Access
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Repeaters operate in what layer of the OSI model?
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Layer 1 - Physical
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Bridges operate in what layer of the OSI model?
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Layer 2 - Data link
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Each port off a bridge is a separate what?
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collision domain
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LAN switches that are capable of running routing protocols are called what?
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Layer 3 switches
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Routing protocols can be labeled in what two categories?
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Interior Gateway Protocols (IGPs) or exterior gateway
protocols (EGPs) |
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What type of routing protocols run the Bellman-Ford algorithms?
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distance vector
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Which routing protocol is considered a hybrid routing protocol?
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EIGRP
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What type of routing protocols are these:
• Routing Information Protocol (RIPv1 and RIPv2) • Interior Gateway Routing Protocol (IGRP) • Enhanced Interior Gateway Routing Protocol (EIGRP) (could be considered a hybrid) |
distance vector
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In what type of routing protocol does each router independently calculate
the best path to destinations and maintain a map of the network? |
Link state routing protocols
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What type of routing protocols are these:
• Open Shortest Path First (OSPF) • Intermediate System-to-Intermediate System (IS-IS) |
Link state routing protocols
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What router command permits packets destined for an unrecognized subnet to be forwarded to the best
supernet possible? |
ip classless
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What type of routing protocols do not advertise subnet masks in their routing updates?
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Classful
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What type of routing protocols advertise subnet masks in their routing updates?
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Classless
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What type of routing protocols allow flexible route
summarization and superneting? |
Classless
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Distance vector routing protocols what to prevent routing loops?
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the split horizon technique
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What is technique that enables
split horizon to say that the learned route is unreachable. |
Poison reverse
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Name two classful routing protocols.
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RIPv1, IGRP
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Name five classless routing protocols.
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OSPF, EIGRP, IS-IS, RIPv2, BGP
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Which routing metric counts the number of routers that the packet must cross to reach a destination?
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Hop count
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Which routing metric uses the default or configured interface bandwidth?
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Bandwidth
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Which routing metric is derived from the bandwidth of the interface. The formula to calculate cost is as follows:
10^8 / BW, where BW is the default or configured bandwidth of the interface? |
Cost
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Which routing metric is the length in time to move a packet to the destination?
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Delay
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Which routing metric is the dependability of a network link. Measured with the expected keepalives?
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Reliability
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Which routing metric refers to the degree to which the interface link is busy?
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Load
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Which routing loop prevention technique sends update messages immediately for a route for which the metric has changed, sent before the periodic update timer expires?
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Triggered update
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Which routing loop prevention technique keeps track of router hops as the packet travels through the network. If the maximum limit is reached, the packet is discarded?
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Counting to infinity
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If the configuration register is set to 0x2101, where is the IOS image booted from?
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ROM
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Which command copies the IOS image file from a UNIX server into flash?
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copy tftp flash
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Which switch command’s output is similar to the output of the router show ip interface
brief command? |
show port status
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What happens if a router’s configuration register is set to 0x2142?
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It will boot to the Initial Configuration dialog
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After entering the debug ip rip command, no messages appear on your Telnet screen.
What is one likely cause? |
The terminal monitor command needs to be configured.
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Which two commands verify the configuration register setting for the next reload?
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show hardware or show version
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Where is the startup configuration usually stored?
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NVRAM
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Which command configures the enable password on a Catalyst switch?
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set enablepass
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The configuration register is set to 0x2101. From where does the router boot?
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IOS in ROM
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What is the purpose of the system bootstrap?
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The system bootstrap initializes the CPU and starts the bootloader.
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What does the "copy tftp running-config" command do?
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Configures the router from a network TFTP server.
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If you Telnet to a router that has the login command configured for all vtys but cannot log in, what is missing?
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The "password" command. If the login command is configured for all vtys but not the password command, the
router prompts with password not set and disconnects the Telnet session. |
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Which command sets the configuration register to 0x2102?
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router(config)#config-register 0x2102
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Which command shows the five second, one minute, and five minute CPU use time for
each process on the router? |
show process cpu
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Which command shows the memory (allocated/freed/holding) used per process?
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show process memory
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Where is the IOS image stored?
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Flash or ROM
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A user telnets to a router that has the password command configured for all vty lines. If the user is granted access with no password, what is missing?
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The login command
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Which prompt indicates that the router is in ROM monitor mode?
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A router is in ROM monitor mode if it has one of the following two prompts:
> rommon > |
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What is the procedure for password recovery?
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Reboot, break, set 0x2142, reboot, copy password, disable ignore NVRAM, reboot
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