Ch 4: Chapter Review Questions

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 of various available routing paths.

(Any three) Hop count, theoretical bandwidth, actual throughput, path latency (or delay), path load, MTU, cost, reliability, network topology

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 table entries are entered manually using the ARP utility.

What database does a router consult before determining the most efficient path for delivering a message?

Its routing table

Which protocol's header would a Layer 4 device read and process? a. IP b. TCP c. ARP d. HTTP

b. TCP

When a router can't determine a path to a message's destination, where does it send the message?a. Default gateway b. Routing table c. Administrative distance d. Gateway of last resort

d. Gateway of last resort

At which OSI layer does IP operate? a. Application layer b. Transport layer c. Network layer d. Data Link layer

c. Network Layer

A routing protocol's reliability and priority are rated by what measurement? a. Routing table b. MTU c. Latency d. AD

d. AD

What field in a TCP segment is used to determine if an arriving data unit exactly matches the data unit sent by the source? a. Source port b. Acknowledgement number c. DiffServ d. Checksum

d. Checksum

Which protocol is supported by ICMPv6 to facilitate neighbor discovery on an IPv6 network?

NDP (Neighbor Discovery Protocol)

Which two fields in an Ethernet frame help synchronize device communications but are not counted toward the frame's size?

Preamble and SFD

What kind of route is created when a network administrator configures a router to use a specific path between nodes? a. Trace route b. Static route c. Default route d. Best path

b. Static route

What is the Internet standard MTU? a. 65,535 bytes b. 1,522 bytes c. 1,500 bytes d. 9,198 bytes

c. 1,500 bytes

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.

List three IGPs (interior gateway protocols).

Any three) RIP, RIPv2, OSPF, IS-IS, EIGRP

What process is used to establish a TCP connection?

Three-way handshake

Which two protocols manage neighbor discovery processes on IPv4 networks? a. ICMP and ARP b. IPv4 and IPv6 c. TCP and UDP d. BGP and OSPF

a. ICMP and ARP

Which routing protocol does an exterior router use to collect data to build its routing tables? a. RIPv2 b. BGP c. OSPF d. IP

b. BGP

Which OSI layer is responsible for directing data from one LAN to another? a. Transport layer b. Network layer c. Data Link layer d. Physical layer

b. Network Layer