Network+ Guide to Networks (Eighth Edition) Chapter 4 Review Questions
A routing protocol's reliability and priority are rated by what measurement?
AD (Administrative Distance)
Which protocol is supported by ICMPv6 to facilitate neighbor discovery on an IPv6 network?
NDP (Neighbor Discovery Protocol)
Which routing protocol does an exterior router use to collect data to build its routing tables?
BGP (Border Gateway Protocol)
What field in a TCP segment is used to determine if an arriving data unit exactly matches the data unit sent by the source?
Checksum
What is the difference between dynamic ARP table entries and static ARP table entries?
Dynamic ARP table entries are created when a client makes an ARP request, whereas static ARP tables entries are entered manually using the ARP utility
Which Linux utility provides output similar to Wireshark?
tcpdump
When a router can't determine a path to a message's destination, where does it send the message?
Gateway of last resort
Which two fields in an Ethernet frame help synchronize device communications but are not counted toward the frame's size?
Preamble and SFD
Which OSI layer is responsible for directing data fro one LAN to another?
Network Layer
At which OSI layer does IP operate?
Network layer
What three characteristics about TCP distinguish it from UDP?
TCP is connection-oriented, uses sequencing and checksums, and provides flow control
Give three examples of routing metrics used by routers to determine the best various available routing paths.
(Any three) Hop count, theoretical bandwidth, actual throughput, path latency (or delay), path load, MTU, cost, reliability, network topology
List three IGPs (interior gateway protocols)
(Any three) RIP, RIPv2 (RIP2), IS-IS, OSPF, EIGRP
What process is used to establish a TCP connection?
Three-way handshake
What four functions do all routers perform?
1. Connect dissimilar networks 2. Interpret Layers 3 and 4 addressing and other information 3. Determine the best path for data to follow 4. Reroute traffic if a primary path is down but another path is available
What is the Internet standard MTU?
1500 bytes Exceptions: Ethernet Frame w/ Tag VLAN: 1522 bytes Ethernet Jumbo Frame: Up to 9198 bytes
Which two protocols manage neighbor discovery processes on IPv4 networks?
ICMP (Internet Control Message Protocol) and ARP (Address Resolution Protocol)
What database does a router consult before determining the most efficient path for delivering a message?
Its routing table
What kind of route is created when a network administrator configures a router to use a specific path between nodes?
Static Route
Which protocol's header would a Layer 4 device read and process?
TCP