Ccna 200-120 - Sybex 1

Front 1

How many collision domains exist when using a hub?

Back 1

One

Front 2

The ______________ part of a MAC address is assigned by the IEE to an organization and is composed of 24bits, or 3 bytes.

Back 2

organizationally unique identifier (OUI)

Front 3

On which layer of the OSI model do routers operate?

Back 3

Network

Front 4

What do IP extended access lists use as a basis for permitting or denying packets?

Back 4

Source and destination addresses, source and destination ports, and protocol

Front 5

To specify all hosts in the Class C IP network 192.16.8.0, what wildcard access list mask would you use?

Back 5

0.0.0.255

Front 6

What access list will allow only web traffic into network 196.15.7.0 from any client?

Back 6

access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www

Front 7

Which router command allows you to determine whether an IP access list is enabled on a particular interface?

Back 7

show ip interface

Front 8

What router command allows you to view the entire contents of all access lists?

Back 8

show access-lists

Front 9

What causes the incrementing of runts on an interface?

Back 9

Collisions

Front 10

What is the IP extended access list range?

Back 10

100–199 and 2000–2699

Front 11

What is the dotted-decimal equivalent of /15?

Back 11

255.254.0.0

Front 12

Which command applies access list 110 inbound to an interface?

Back 12

Router(config-if)#ip access-group 110 in

Front 13

What is a network called that is used to allow limited access to certain resources from outside the LAN?

Back 13

DMZ

Front 14

lists use the numbers 1–99 or 1300–1999 and filter based on source IP address only.

Back 14

Standard IP access

Front 15

The block size of a /26 network is .

Back 15

64

Front 16

The output of the show startup-config command comes from .

Back 16

NVRAM

Front 17

What standards-based protocol works much like CDP?

Back 17

Link Layer Discovery Protocol (LLDP)

Front 18

________ lists use the range from 100 to 199 or from 2000 to 2699.

Back 18

IP extended access

Front 19

What type of mask do routes in the routing table marked with an L have?

Back 19

/32

Front 20

True/False: Area border routers can be in only one area at a time.

Back 20

False: Any router that is member of two areas is a border router, or an area border router (ABR), by definition.

Front 21

Which configuration mode and command combination sets the bandwidth metric of a Frame Relay connection to 64000 bps?

Back 21

router(config-if)#bandwidth 64

Front 22

True/False: Layer 2 switches and bridges are faster than routers because they don't take up time looking at the Data Link layer header information.

Back 22

False

Front 23

True/False: VLANs greatly reduce network security.

Back 23

False

Front 24

True/False: When a packet is being compared to an access list, it's always compared with each line of the access list in sequential order until it finds a match.

Back 24

True

Front 25

on an Ethernet network is the retransmission delay that's enforced when a collision occurs.

Back 25

Backoff

Front 26

What is the PDU called at the Data Link layer?

Back 26

A Frame

Front 27

What Application layer protocols sets up a secure session that's similar to Telnet?

Back 27

SSH

Front 28

What command, enabled by default starting with Cisco IOS version 12.x, allows the use of the first and last subnet in a network design?

Back 28

ip subnet-zero

Front 29

What mask yields only six IP addresses per subnet?

Back 29

255.255.255.248, or /29

Front 30

What prompt indicates you are at privileged mode?

Back 30

router#

Front 31

Which command backs up the Cisco IOS to a TFTP server?

Back 31

copy flash tftp

Front 32

What protocol resolves IP addresses to MAC address?

Back 32

ARP

Front 33

What command provides an excellent overview of the actual operation of all currently running protocols?

Back 33

show ip protocols

Front 34

True/False: Layer 2 switches and bridges look at the frame's hardware addresses before deciding to either forward, flood, or drop the frame.

Back 34

True

Front 35

Type the command that must be present for a layer 3 switch to provide inter-VLAN routing between the two VLANs.

Back 35

ip routing

Front 36

Type the command that creates a named extended access list called 150.

Back 36

ip access-list extended 150

Front 37

What device hosts a different subnet on each interface?

Back 37

Router

Front 38

In an Ethernet II frame, what is the function of the section labeled FCS?

Back 38

Error detection

Front 39

What mechanism is used by the client to avoid a duplicate IP address during the DHCP process?

Back 39

Gratuitous ARP

Front 40

Which type of protocol determines the path of a packet through a network: routing or routed?

Back 40

Routing

Front 41

How many subnets are contained in the network 192.168.1.0.0/27?

Back 41

Eight

Front 42

What is the HyperTerminal setting for connecting to a Cisco router?

Back 42

9600 bps, parity None, 1 stop bit, and 8 data bits

Front 43

What type of cable is used to connect to a console port of a router?

Back 43

Rolled or rollover

Front 44

What type of Ethernet cable is used to connect from a hub to a switch?

Back 44

Crossover

Front 45

The _______________ command causes the system to return you to your previous prompt after displaying a console message.

Back 45

logging synchronous

Front 46

True/False: OSPF uses cost as a metric.

Back 46

True

Front 47

What does the configuration register setting of 0x2102 do?

Back 47

Tells the router to look in NVRAM for the boot sequence

Front 48

What IP address is called the loopback address?

Back 48

127.0.0.1

Front 49

Which command can be used to determine a router's capacity to generate debug output?

Back 49

show processes cpu

Front 50

True/False: OSPF is called an advanced distance-vector routing protocol.

Back 50

False: EIGRP is an advanced distance-vector protocol.

Front 51

An IPv6 address is how many bits long?

Back 51

128

Front 52

True/False: A routing protocol determines the path of a packet through a network.

Back 52

True

Front 53

True/False: A routed protocol is assigned to an interface and determines the method of packet delivery.

Back 53

True

Front 54

How does inter-VLAN communication take place?

Back 54

Using a router or layer 3 switch

Front 55

What is shortest possible version of 2001:0db8:3c4d:0012:0000:0000:1234:56ab?

Back 55

2001:db8:3c4d:12::1234:56ab

Front 56

What type of IPv6 address is delivered to a single interface?

Back 56

Unicast

Front 57

What is the IEEE standard frame tagging method?

Back 57

802.1q

Front 58

Which switching technology reduces the size of a broadcast domain?

Back 58

VLANs

Front 59

What is the main purpose of creating VLANs?

Back 59

To break up broadcast domains at layer 2

Front 60

What is a publicly routable IPv6 address called?

Back 60

Global unicast

Front 61

What advantage is offered by LAN segmentation?

Back 61

More bandwidth is provided to each user.

Front 62

Which Class C mask can be used to provide seven subnets, each with 25 hosts?

Back 62

255.255.255.224, or /27, although it actually provides a total of eight subnets, each with 30 hosts

Front 63

______ break up broadcast domains in layer 2 switched networks.

Back 63

Virtual LANs

Front 64

_____________ links are used to carry VLAN information between switches.

Back 64

Trunk

Front 65

Access links carry traffic for how many VLAN?

Back 65

One

Front 66

The typical reason for creating network segmentation is to provide more to each user.

Back 66

Bandwidth

Front 67

What IPv6 address type is the equivalent of an Automatic Private IP Address (APIPPA) address?

Back 67

Link-local

Front 68

What is the binary equivalent of the decimal number 152?

Back 68

10011000

Front 69

What IPv6 address type is referred to as a "one-to-nearest" address?

Back 69

Anycast

Front 70

What command do you use to copy a configuration from a TFTP host to a Cisco router's DRAM on your network?

Back 70

copy tftp running-config

Front 71

Which memory in a Cisco router stores packet buffers and routing tables?

Back 71

RAM

Front 72

What IPv6 address is the equivalent of 127.0.0.1 in IPv4?

Back 72

::1

Front 73

What IPv6 suffix describes the multicast range?

Back 73

FF00::/8

Front 74

Which command will show you the IOS version running on your router?

Back 74

sh version

Front 75

The basic IPv6 header contains how many fields?

Back 75

Eight

Front 76

To copy a configuration from the Cisco router's DRAM to a TFTP host on your network, what command can you use?

Back 76

copy run tftp

Front 77

If you want to suspend a Telnet session, what keystroke combination would you use?

Back 77

Ctrl+Shift+6, then X

Front 78

The ICMPv6 packet is identified by the value 58 in the _________ field, located inside the IPv6 header.

Back 78

Next Header

Front 79

What component performs the function of Address Resolution Protocol in ICMPv6?

Back 79

Neighbor discovery

Front 80

How do IPv6 hosts receive the address of the gateway?

Back 80

Router solicitation

Front 81

Which command is used to find the path a packet takes through an internetwork?

Back 81

traceroute

Front 82

Using the prefix 2001:db8:1:1/64, convert the following MAC address into a EUI-64 address: 1020:ef01:5554.

Back 82

2001:db8:1:1:1220:efff:fe01:5554

Front 83

When hosts make up or receive an IPv6 address, they send three _______ packets out via NDP NS asking if anyone has this same address.

Back 83

duplicate address detection (DAD)

Front 84

Which command displays Cisco Discovery Protocol adjacencies?

Back 84

show cdp neighbors

Front 85

What command will show you a directly connected router's interface IP address?

Back 85

show cdp neighbor detail

Front 86

What is the IPv6 version of OSPF called?

Back 86

OSPFv3

Front 87

What is the Class C private IP address range?

Back 87

192.168.0.0 through 192.168.255.255

Front 88

You use the command to copy a configuration of a router stored on a TFTP server to a router's NVRAM.

Back 88

copy tftp startup-config

Front 89

On which types of networks will OSPF elect a backup designated router?

Back 89

Non-broadcast and broadcast multi-access

Front 90

______________ is used to store packet buffers and routing tables, among other things.

Back 90

RAM

Front 91

What is the hex equivalent of 11000111?

Back 91

C7

Front 92

The IPv6 address for an OSPF DR is _________ .

Back 92

FF02::6

Front 93

The copy running-config startup-config command copies the configuration stored in___________ to _____________ .

Back 93

RAM, NVRAM

Front 94

What format of IPv6 addressing takes the unique MAC address of a host and inserts FF:FE in the middle of the address to change a 48-bit MAC address to a 64-bit interface ID?

Back 94

EUI-64 address

Front 95

To keep open multiple ____________ sessions, use the Ctrl+Shift+6, then X keystroke combination.

Back 95

Telnet

Front 96

What is the port number for Telnet?

Back 96

23

Front 97

What is the hex equivalent of 01110101?

Back 97

0x75. Cisco sometimes likes to show the 0x in front of hex characters.

Front 98

The ping and traceroute commands can both be used to test _____________ in an internetwork.

Back 98

IP connectivity

Front 99

What standard allows the use of subnets masks other the default masks?

Back 99

Classless Inter-Domain Routing (CIDR) allows the use of subnet masks such as 255.255.224.0

Front 100

Using the prefix 2001:db8:1:1/64, convert the following MAC address into a EUI-64 address: 0b0c:abcd:1234

Back 100

2001:db8:1:1:090c:abff:fecd:1234