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