Networking 100 chapter 6,7,8, 10

Which protocol is connection-oriented

TCP

What is the de facto protocol suite of the Internet?

TCP/IP

What network protocol do Apple systems use today?

TCP/IP

Domain Name System (DNS) uses UDP.

TRUE

Every brand of router tends to use the same default user name and password.

TRUE

Not only does DHCP give out IP addresses, it can also give out additional information, such as your default gateway, DNS server, and Network Time server.

TRUE

Routing table entries are entered manually on static routers and do not change.

TRUE

With distance vector routing protocols, the simplest total cost sums the hops (the hop count) between a router and a network.

TRUE

Which tool can be used to access a Cisco router remotely from a Windows 7 system?

. PuTTY

Which item is part of a fully qualified domain name (FQDN)?

. The host name

When viewed in binary, which value is always on the far left in the first octet of a Class A address?

0

What is the range of decimal values in each of the four groups of an IPv4 address?

0 to 255

Which value represents the core or backbone area of an OSPF network?

0.0.0.0

Which of the following could be a valid Autonomous System Number (ASN)?

1.33457

Which of the following is a designated private IP address?

10.164.19.5

Which port is used to receive e-mail messages from e-mail servers (POP3)?

110

What is the maximum number of hops allowed by RIP?

15

Which subnet mask is an example of classless subnetting?

255.255.240.0

What is the default subnet mask for a Class C network?

255.255.255.0

Which formula would you use to calculate the number of new subnets?

2y, where y is the number of bits you add to the subnet mask

How long is a subnet mask?

32 BITS

Suppose your network subnet mask is 255.255.0.0. What is the maximum number of host IDs available for this network?

65534

Which port do Web servers use?

80

Which tool is used by an administrator to manage many routers and obtain an overall view of all the routers?

Network Management System (NMS)

Which NAT technology uses port numbers to map traffic from specific machines on the network?

PAT

What entry is made at the command prompt in UNIX/Linux to display DNS server information?

cat /etc/resolv.conf

Which zone files are the most important part of any DNS server?

Forward lookup zones

To what layer of the OSI model does the TCP/IP model?s Internet layer correspond?

Network

Which statement about subnet masks is true?

All machines on the same network have the same subnet mask.

Which protocol is a path vector routing protocol?

BGP

By convention, what is the name given to Area ID 0 (zero) of an Open Shortest Path First (OSPF) network?

Backbone

Which routing metric refers to the ability of a connection to handle more data than others?

Bandwidth

What are the two names for dynamic IP addressing?

Bootstrap Protocol (BOOTP) and Dynamic Host Configuration Protocol (DHCP)

Which protocol is used on the Internet for communication between Autonomous Systems?

Border Gateway Protocol (BGP-4)

if the first decimal value of an IP address is between 128 and 191, to what IP class does the network belong?

CLASS B

What is the name of Cisco?s proprietary operating system?

Cisco IOS

If the first decimal value of an IP address is between 128 and 191, to what IP class does the network belong?

Class B

Which task is performed by an ISP when it takes a block of addresses, subnets the block into multiple subnets, and then passes out the smaller individual subnets to customers?

Classless Inter-Domain Routing (CIDR)

Which protocol enables DNS servers to get automatic updates of IP addresses of computers in their forward lookup zones, mainly by talking to the local DHCP server?

Dynamic DNS

Which tool automatically assigns an IP address whenever a computer connects to the network?

DHCP

What tasks should be performed as soon as an administrator finishes configuring a router?

Document how you configured the router and back up the router configuration.

Which protocol is Cisco?s proprietary protocol?

EIGRP

Which routing protocol is the choice in most large enterprise networks?

EIGRP

The protocol used by Autonomous Systems to communicate with each other is generically called a(n) __________.

Exterior Gateway Protocol (EGP)

On a Linux system, you can renew a DHCP address by using the command ipconfig /renew.

FALSE

Subnetting makes it difficult to separate a network for security purposes.

FALSE

The Border Gateway Protocol is used between routers inside a single Autonomous System.

FALSE

What is the universal MAC address for broadcast?

FF-FF-FF-FF-FF-FF

A Windows domain is the same as a DNS domain.

False

A single DNS domain may have a single authoritative DNS server and only one other DNS server, known as a name server (NS).

False

IP is a Transport layer protocol.

False

RIP converges dramatically faster and is much more efficient than OSPF.

False

Routers work with the source IP address of each packet.

False

The Link layer is where most of the activity happens in the TCP/IP protocol suite.

False

The first thing you should do with a new router is to plug it into an existing network.

False

The part of the IP address that is the same for all computers on a network is called the host ID.

False

UDP is a connection-oriented protocol

False

UDP is a connection-oriented protocol.

False

When a computer gives itself an Automatic Private IP Address (APIPA), it also includes a valid default gateway address.

False

With NAT, the router replaces the destination IP address of a computer with its outside interface address on outgoing packets.

False

You can have 256 hosts on a /24 network.

False

On an authoritative DNS server, which storage areas hold the IP addresses and FQDNs for the computers in a domain?

Forward lookup zones

What term best describes the way the DNS name space is organized?

Hierarchical

Which term refers to the passage of a packet through a router?

Hop

What is the cornerstone of subnetting?

IP address

What tool is used to overcome the limitations inherent in TCP/IP Ethernet networks?

IP addressing

Which protocol is a distance vector routing protocol?

IS-IS

Which protocol is a link state dynamic routing protocol?

IS-IS

Which column in a routing table tells the router which of its ports to use?

Interface

Which routing metric determines the largest frame a particular technology can handle?

MTU

At which layer of the OSI model do routers work?

Network

What is another name for dynamic NAT?

Pooled NAT

Which form of NAT typically handles the one-to-many connections?

Port Address Translation (PAT)

Your company has a single server on the private LAN that it wants to make accessible from the Internet. Which of the following would give the server the protection of NAT, while allowing access to that server from the Internet?

Port forwarding

Which vector routing protocol is the oldest?

RIP

Which routing protocol does not support Variable-Length Subnet Masking (VLSM)?

RIPv1

What protocol was adopted in 1994, and is now considered obsolete except for small, private WANs?

RIPv2

__________ maps a single routable (that is, not private) IP address to a single machine, enabling you to access that machine from outside the network.

Static NAT

Which statement is true about DNS roots?

They have the complete definitive name resolution table.

Within the DNS hierarchy, which term refers to the DNS servers just below the DNS root?

Top-level domain servers

Every node on a network has a routing table.

True

Every operating system always looks first in the hosts file before anything else when attempting to resolve a name.

True

Network Address Translation (NAT) extended the useful life of IPv4 addresses on the Internet for many years.

True

Which protocol do Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) use?

UDP

On a TCP/IP network, a router determines where an incoming packet should go by looking at the packet?s

destination IP addresses

NAT is essentially the same process as routing.

false

Class C network block uses the __________ octets to define only the network ID.

first three

Which protocol uses TCP as its transport layer protocol?

http

Which command is used to force a DNS server to update its records?

ipconfig /registerdns

When a router has more than one route to the same network, the responsibility for assigning a different metric for each route lies with the __________.

person in charge of that router

What command can you use to tell a device to send packets to itself?

ping 127.0.0.1

What command would you run from a Windows command line to test a computer?s network stack?

ping 127.0.0.1

The addresses 127.0.0.1, 10.1.1.50, 172.16.200.1, and 192.168.35.44 are all examples of ________.

special IP addresses

Which tool records the route between any two hosts on a network and can be used to troubleshoot routing problems?

traceroute

Secure Shell (SSH) is a terminal emulation program that uses the network to connect routers.

true

Subnet masks are always 32 binary digits long.

true

TCP chops up data into segments.

true

The first binary octet of a Class C IP address always begins with 110 (110xxxxx).

true

When a DHCP client boots up, it automatically sends out a special DHCP Discover packet using the broadcast address.

true

What is the name of the proprietary cable designed by Cisco for connecting to their routers?

yOST