Intro to Networks chapters 11-13
A network administrator is testing network connectivity by issuing ping command on router. Which symbol will be displayed to indicate that time expired during wait for ICMP echo reply message?
.Traceroute
What is the recommended prefix length for most IPv6 subnets?
/64
Which two things can be determined by using ping command?
Average time it takes packet to reach destination and for response to return to source Destination device is reachable through network
Which address type is not supported in IPv6?
Broadcast
What is the most important motivating factor for moving to IPv6?
Depletion of IPv4 address
Which two types of ICMP messages are common to both ICMPv4 and ICMPv6?
Destination or service unreachable Time exceeded
Which of the following techniques use native IPv6 connectivity?
Dual stack
What are two methods device can use to generate its own IPv6 interface ID?
EUI-64 randomly generated
Which IPv6 network prefix is only intended for local links and can not be routed?
FE80::/10
The Subnet ID field in GUA must borrow bits from interface ID. RA messages are sent to all IPv6 routers by hosts requesting addressing information.
False
Which part of GUA (global unicast address) is assigned by ISP?
Global Routing Prefix
What is the minimum configuration for router interface that is enabled for IPv6?
Have link local IP address
What field content is used by ICMPv6 to determine that packet has expired?
Hop limit field
Which protocol is used by IPv4 and IPv6 to provide error messaging? Which protocol provides feedback from destination host to source host about errors in packet delivery?
ICMP (Internet Control Message Protocol)
What is indicated by successful ping to ::1 IPv6 address?
IP is properly installed on host
Which type of IPv6 unicast address is not routable between networks? What type of IPv6 address begins with fe80? At a minimum, which address is required on IPv6-enabled interfaces?
LLA (link-local address)
Which dynamic addressing method for GUAs is the one where devices rely solely on contents of RA (Router Advertisement) message for their addressing information?
Method 1: SLACC (Stateless Address Auto-Configuration)
Which dynamic addressing method for GUAs is the one where devices get their IPv6 configuration in RA message and request DNS information from DHCPv6 server?
Method 2: SLACC and Stateless DHCPv6
Which dynamic addressing method for GUAs is the one where devices rely solely on DHCPv6 server for their addressing information?
Method 3: Stateless DHCPv6
What message is sent by host to check uniqueness of IPv6 address before using that address?
Neighbor solicitation
Which utility uses Internet Control Messaging Protocol (ICMP)? Which command can be used to test connectivity between two devices using echo request and reply messages?
Ping
Which two statements are correct about private IPv4 addresses?
Private IPv4 addresses are assigned to devices within organization's intranet (internal network). Any organization (home, school, office, company) can use 10.0.0.0/8 address.
Which organization or group of organizations receives IP addresses from IANA and is responsible for allocating these addresses to ISPs and some organizations?
RIRs (Regional Internet Registries)
Which devices will not forward IPv4 broadcast packet by default?
Router
Which type of ICMPv6 message would host send to acquire IPv6 configuration when booting up?
Router solicitation
What is a function of tracert command that differs from ping command when they are used on workstation?
Shows information of routers in path
Which statement is true about variable-length subnet masking?
Size of each subnet may be different, depending on requirements.
Which two situations are result of excessive broadcast traffic?
Slow network connections Slow device operations
Which field in IPv6 GUA is used for subnetting?
Subnet ID
A user calls to report that PC cannot access internet. Network technician asks user to issue command ping 127.0.0.1 in command prompt window. User reports that result is four positive replies. What conclusion can be drawn based on this connectivity test?
TCP/IP implementation is functional
What is the purpose of command ping ::1?
Tests internal configuration of IPv6 host.
Which ICMP message is used by traceroute utility during process of finding path between two end hosts?
Time exceeded
Which two statements are correct about public IPv4 addresses?
To access device over internet, destination IPv4 address must be public address. Public IPv4 address exhaustion is reason why there are private IPv4 address and why organizations are transitioning (changing) to IPv6.
What is the purpose of subnet mask in conjunction with IP address?
To determine subnet to which host belongs
A user who is unable to connect to file server contacts help desk. Help desk technician asks user to ping IP address of default gateway that is configured on workstation. What is the purpose for this ping command?
To test that host has capability to reach hosts on other networks
A network administrator can successfully ping server at www.cisco.com, but cannot ping company web server located at ISP in another city. Which tool or command would help identify specific router where packet was lost or delayed?
Traceroute
Technician is troubleshooting network where it is suspected that defective node in network path is causing packets to be dropped. Technician only has IP address of end point device and does not have any details of intermediate devices. What command can technician use to identify faulty node?
Tracert
4 out of 5 RIRs no longer have enough IPv4 addresses to allocate to customers on a regular basis IPv6 was designed with subnetting in mind
True
Why does Layer 3 device perform ANDing process on destination IP address and subnet mask?
to identify network address of destination network
